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-   -   Lil IHRA classification help please!! Newbie Alert! (https://classracer.com/classforum/showthread.php?t=49292)

KennyAnderson 09-12-2013 08:45 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
"Yeah, pretty much they have. I have "most" of the pieces to put a SBC crate car together. Lack of time and motivation have kept me from pursuing it. I have a set of Parson's heads and the matching intake. Comp Cam and new Sherman lifters. Ross Pistons and a couple sets of good rods both stock and super stock. A legal carb that I got from Jeff Ross, built by a reputable person. The car already has a prepped rear with all Strange parts. Cal tracs and mono leafs. Have the pucks in the front subframe, need to rebuild the rest. Got the wheels and tires. Roll bar and frame connectors, just need to get them set up and welded in. Got a good 4 bolt main block with a steel crank, a donor from an old truck to build the engine from. They'll probably abolish the class before I finish the car.

Bruce told us we could expect to have $1600 or so in the block and crank work. I imagine with extras that figure will close to double. I gave him my modest expectations of what I expected the car to run. He laughed and said, if the car was set up at all, he didn't feel we'd have to worry about going that slow!"

Robert forgive me for being naïve but exactly what is "crate motor" about this build? If I was going to this trouble it would be a legal motor.

KennyAnderson 09-12-2013 08:50 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
" I hope its true also about the rumors. "

Daran if the rumors you are talking about are what I think, its looking REAL good! I am on a committee at Palm Beach. The owners of Palm Beach also own IHRA, Memphis, and SIR as Im sure you know. Anyhow we had a meeting last night to discuss among other things next years schedule. Looks good for us to do less traveling next year!:D;):D

Tar Heel 09-12-2013 09:33 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Robert Swartz (Post 399487)
Yeah, pretty much they have. I have "most" of the pieces to put a SBC crate car together. Lack of time and motivation have kept me from pursuing it. I have a set of Parson's heads and the matching intake. Comp Cam and new Sherman lifters. Ross Pistons and a couple sets of good rods both stock and super stock. A legal carb that I got from Jeff Ross, built by a reputable person. The car already has a prepped rear with all Strange parts. Cal tracs and mono leafs. Have the pucks in the front subframe, need to rebuild the rest. Got the wheels and tires. Roll bar and frame connectors, just need to get them set up and welded in. Got a good 4 bolt main block with a steel crank, a donor from an old truck to build the engine from. They'll probably abolish the class before I finish the car.

Bruce told us we could expect to have $1600 or so in the block and crank work. I imagine with extras that figure will close to double. I gave him my modest expectations of what I expected the car to run. He laughed and said, if the car was set up at all, he didn't feel we'd have to worry about going that slow!

I love the PS concept. It's what Stock USED to be. My little FWD car won't fit into Pure Stock. Wish they pushed the same number of weight breaks as regular stock.

From my limited experience in Pure Stock running both a LT1 and LS1 car it's my observation that it's easier to make those run near or under the index without going into the engine. Things like gears, converters, headers, tune, etc. will get you there without having to even remove a valve cover. I have no first-hand experience with racing a carbureted SBC but I would guess you would have to have head work done as well as fancy lifters, a cam, good carb. etc. to run with the late-model fuel-injected cars. Are the new cars making more power or perhaps put in classes with soft indexes? I don't know ... maybe both. I do think that if someone was to get serious about a FI race engine with all the bells and whistles in Pure Stock it would be pretty easy to go well under a second under the index. Heck, our car in good air will be a second under now and will easily set a National Record however I've never had a head off and don't exactly know how to on this particular car and definitely don't want to learn for the first time in a teardown barn on the road.

Tar Heel 09-12-2013 09:38 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 399550)
"Yeah, pretty much they have. I have "most" of the pieces to put a SBC crate car together. Lack of time and motivation have kept me from pursuing it. I have a set of Parson's heads and the matching intake. Comp Cam and new Sherman lifters. Ross Pistons and a couple sets of good rods both stock and super stock. A legal carb that I got from Jeff Ross, built by a reputable person. The car already has a prepped rear with all Strange parts. Cal tracs and mono leafs. Have the pucks in the front subframe, need to rebuild the rest. Got the wheels and tires. Roll bar and frame connectors, just need to get them set up and welded in. Got a good 4 bolt main block with a steel crank, a donor from an old truck to build the engine from. They'll probably abolish the class before I finish the car.

Bruce told us we could expect to have $1600 or so in the block and crank work. I imagine with extras that figure will close to double. I gave him my modest expectations of what I expected the car to run. He laughed and said, if the car was set up at all, he didn't feel we'd have to worry about going that slow!"

Robert forgive me for being naïve but exactly what is "crate motor" about this build? If I was going to this trouble it would be a legal motor.

I think the original intent of Crate Motor Kenny was to actually buy a crate motor from GM, Ford, etc. and then do the necessary modifications on that long block to get it to run under the index. However, the only thing necessary on a "crate motor" to be legal ... let's say a Fast Burn for instance, would be the legal heads. When you buy a complete engine from GM you change the rods, put in a Stocker cam, add a single plane intake, etc. Everyone has access to a SBC block, crank, and then can add aftermarket rods, legal pistons, intake, etc. for well under what the factory charges for the long block ... most of which you won't use if you really want to be fast. He'll still be legal but is just gathering parts instead of buying the engine complete.

KennyAnderson 09-12-2013 10:22 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Tar Heel (Post 399559)
I think the original intent of Crate Motor Kenny was to actually buy a crate motor from GM, Ford, etc. and then do the necessary modifications on that long block to get it to run under the index. However, the only thing necessary on a "crate motor" to be legal ... let's say a Fast Burn for instance, would be the legal heads. When you buy a complete engine from GM you change the rods, put in a Stocker cam, add a single plane intake, etc. Everyone has access to a SBC block, crank, and then can add aftermarket rods, legal pistons, intake, etc. for well under what the factory charges for the long block ... most of which you won't use if you really want to be fast. He'll still be legal but is just gathering parts instead of buying the engine complete.

Im with you, I just think this is not the most economical way to go. If Im piecing together a motor like this why not just build a legal motor to run either sanctioning body. I would expect to spend 10k for a good legal setup building it myself. I figure on buying a used ZZ4 and going through it to the tune of around 5k. Hopefully when Im ready the guy I alluded to in an earlier post has some stuff still. Right now he has a fastburn motor fresh carb to pan for 3k. I completely understand you CAN spend a ton if you like, I love that you can compete without doing it.

PS Would love to see IHRA do a Crate Motor SS deal.

Tar Heel 09-12-2013 11:06 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 399568)
Im with you, I just think this is not the most economical way to go. If Im piecing together a motor like this why not just build a legal motor to run either sanctioning body. I would expect to spend 10k for a good legal setup building it myself. I figure on buying a used ZZ4 and going through it to the tune of around 5k. Hopefully when Im ready the guy I alluded to in an earlier post has some stuff still. Right now he has a fastburn motor fresh carb to pan for 3k. I completely understand you CAN spend a ton if you like, I love that you can compete without doing it.

PS Would love to see IHRA do a Crate Motor SS deal.

Yes, you're absolutely correct. If you're going to spend big dollars then build one that can run NHRA too. There are from time to time affordable turn-key crate motors that come up for sale (like the one you talked about) that can be dropped into a chassis that's sorted out and will run the index and let you go racing and have fun for a small amount. We didn't go that route because due to the popularity of the crate motor classes you're likely to go heads-up in eliminations with one of the killer fast cars and it would be like bringing a knife to a gun fight. However, that doesn't happen often and also won't keep you from having fun at class races and being able to bracket race too. In Pure Stock though (since we are fewer and seem to be more spread out) the chances of having a heads-up race is less. I'm not aware of any B/PS car west of the Mississippi so I'm likely not going to see any in Texas, Oklahoma, ...

KennyAnderson 09-12-2013 11:20 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Completely agreed. A few PS cars down here but not many.There are some C/M cars I looked at turnkey just couldn't find the right one. Plus I want the kids to get an education as we progress through this. There is a 3rd gen Camaro C/M car down here for sale that goes pretty far under the index for $7500. Its just waayyyyy to rough for me. A bud bought a Malibu wagon C/M car that goes 4 tenths under in the heat for $5k TURNKEY!!! Wish I found that one first and I have asked for dibs when/if he ever tires of it.

Tar Heel 09-12-2013 01:44 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 399579)
Completely agreed. A few PS cars down here but not many.There are some C/M cars I looked at turnkey just couldn't find the right one. Plus I want the kids to get an education as we progress through this. There is a 3rd gen Camaro C/M car down here for sale that goes pretty far under the index for $7500. Its just waayyyyy to rough for me. A bud bought a Malibu wagon C/M car that goes 4 tenths under in the heat for $5k TURNKEY!!! Wish I found that one first and I have asked for dibs when/if he ever tires of it.

Yes, no sense in investing in something that's not clean and worth the money. It may not be right thinking but my thought process has always been if the body/interior is rough was the drivetrain done well and is it safe? It's just my personal preference but I'd rather go slower in an above average clean car that's safe.

Dan Fahey 09-12-2013 02:26 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Tar Heel (Post 399599)
Yes, no sense in investing in something that's not clean and worth the money. It may not be right thinking but my thought process has always been if the body/interior is rough was the drivetrain done well and is it safe? It's just my personal preference but I'd rather go slower in an above average clean car that's safe.

HOWEVER.. have an additional advantage..

We can put on our wide wheels and tires and go Road Racing or Auto Crossing.

Which NO Stocker or SSer can do...:eek:

D

Tar Heel 09-12-2013 02:35 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Dan Fahey (Post 399608)
HOWEVER.. have an additional advantage..

We can put on our wide wheels and tires and go Road Racing or Auto Crossing.

Which NO Stocker or SSer can do...:eek:

D

Wide wheels on the front? I'm completely confused ... :confused: ;)

ALMACK 09-12-2013 03:57 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Dan Fahey (Post 399608)
HOWEVER.. have an additional advantage..

We can put on our wide wheels and tires and go Road Racing or Auto Crossing.

Which NO Stocker or SSer can do...:eek:

D

I chuckled when I read that Dan.
I could do the same with my PS Mustang.
It still has front and rear sway bars hooked up as well as the factory struts and shocks. I also have a set of 17 x 9 wheels w/275 radials if needed.

Not sure how my Pure Stocker would work on a auto-x with those 4.56 gears tho.
Overdrive trans is a push button switch away. :)


I have tried autocross with my other '95 Mustang GT and man is it rough on tires and suspension parts. But it sure was fun.

Dan Fahey 09-12-2013 05:14 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Tom Gould's CORVAIR could dust all of us..

AND he does not even need Power Steering...:)

Robert Swartz 09-12-2013 06:04 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 399550)
"Yeah, pretty much they have. I have "most" of the pieces to put a SBC crate car together. Lack of time and motivation have kept me from pursuing it. I have a set of Parson's heads and the matching intake. Comp Cam and new Sherman lifters. Ross Pistons and a couple sets of good rods both stock and super stock. A legal carb that I got from Jeff Ross, built by a reputable person. The car already has a prepped rear with all Strange parts. Cal tracs and mono leafs. Have the pucks in the front subframe, need to rebuild the rest. Got the wheels and tires. Roll bar and frame connectors, just need to get them set up and welded in. Got a good 4 bolt main block with a steel crank, a donor from an old truck to build the engine from. They'll probably abolish the class before I finish the car.

Bruce told us we could expect to have $1600 or so in the block and crank work. I imagine with extras that figure will close to double. I gave him my modest expectations of what I expected the car to run. He laughed and said, if the car was set up at all, he didn't feel we'd have to worry about going that slow!"

Robert forgive me for being naïve but exactly what is "crate motor" about this build? If I was going to this trouble it would be a legal motor.

Kenny,

79 Pontiac Firebird, Trans Am body. Not a good selection of available engines. One Chevy, 350/175, very expensive engine to build. I believe (may be wrong) the 400 Pontiac or the 403 Olds was the standard available engine. When I started disassembling the car. After looking over the options, the IHRA crate motor looked like the best chance to get an engine up and running that could make it's index. Which would've given me a car that could run the combos here in the midwest.

Yes, most of the pieces would be sufficient for a late 70's-early 80's NHRA SBC shortblock. Change heads, intake, cam and carb. Then I would need another body, lol!

I guess I just don't have illusions about running NHRA events.

KennyAnderson 09-16-2013 03:30 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
OK!! Picked car up on sat am, mounted wheels and tires and went racin sat sun. Not bad although a lil slower than I had hoped. It was AFRICA HOT THO!! Ran 14.30's and high 9.teens/20's in the eigth. Fairly consistent and easy to hit the tree in. Looks like D/PS it is although I will need to get just about 100lbs out of the car and speed it up considerably with an 8.50 index. First thing on the slate is a converter. The stock one is TIGHT! Can barely footbrake it to 1500 before it pushes through the brakes. Looking at a Yank 3800-4000 stall. Any pointers? And guys with experience how much did you pick up with a good converter. Most say 1/2 sec should be easy with a good one. Headers and gears next up.

Mark Yacavone 09-16-2013 04:26 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 400266)
OK!! Picked car up on sat am, mounted wheels and tires and went racin sat sun. Not bad although a lil slower than I had hoped. It was AFRICA HOT THO!! Ran 14.30's and high 9.teens/20's in the eigth. Fairly consistent and easy to hit the tree in. Looks like D/PS it is although I will need to get just about 100lbs out of the car and speed it up considerably with an 8.50 index. First thing on the slate is a converter. The stock one is TIGHT! Can barely footbrake it to 1500 before it pushes through the brakes. Looking at a Yank 3800-4000 stall. Any pointers? And guys with experience how much did you pick up with a good converter. Most say 1/2 sec should be easy with a good one. Headers and gears next up.

Shoot me a PM and I will give you my opinion

Tar Heel 09-16-2013 08:01 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 400266)
OK!! Picked car up on sat am, mounted wheels and tires and went racin sat sun. Not bad although a lil slower than I had hoped. It was AFRICA HOT THO!! Ran 14.30's and high 9.teens/20's in the eigth. Fairly consistent and easy to hit the tree in. Looks like D/PS it is although I will need to get just about 100lbs out of the car and speed it up considerably with an 8.50 index. First thing on the slate is a converter. The stock one is TIGHT! Can barely footbrake it to 1500 before it pushes through the brakes. Looking at a Yank 3800-4000 stall. Any pointers? And guys with experience how much did you pick up with a good converter. Most say 1/2 sec should be easy with a good one. Headers and gears next up.

We put a Yank SS4000 converter in along with a 3.90 gear (stock is 3.15) and drove it to the track on a drag radial and picked up one full second. 60' times were in the 1.60s. A half second from just the converter (assuming it will hook) sounds about right. If you want to order new call Yank and get a recommendation ... they know their stuff. However, if you look around on the Camaro and Corvette forums you can usually pick up a nice used one for about half price.

KennyAnderson 09-16-2013 11:32 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
PM sent. Thanks!

Thanks Scott. Did it pick up a sec in the 1/4? If so how much 1/8th? Either way IMPRESSIVE. Got a line on some headers, gears next. I'm hoping between these three main things (converter, gear, and headers) PLUS getting about 100 lbs out of the car I can run the index or better. Need 7 tenths in the 1/8th (8.50 index).

Tar Heel 09-17-2013 08:41 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 400346)
PM sent. Thanks!

Thanks Scott. Did it pick up a sec in the 1/4? If so how much 1/8th? Either way IMPRESSIVE. Got a line on some headers, gears next. I'm hoping between these three main things (converter, gear, and headers) PLUS getting about 100 lbs out of the car I can run the index or better. Need 7 tenths in the 1/8th (8.50 index).

It was a full second in the 1/4 ... I don't recall what we picked up in the 1/8. I'd have to refer back to our log book. I do know our car runs further under in the 1/8 than it does in the 1/4. ??? Don't forget to get a tune. If you can swing it, and have someone local who is reputable and knows what they are doing, a dyno tune is always worth the extra money. Some folks are going to tell you a mail order is fine but PM for my personal opinion as well as some bad experiences that I've had.

KennyAnderson 09-17-2013 01:46 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Luckily I have a longtime bud down here about 30 min away who is a guru and has a chassis dyno. One thing I am going to look at is a shift kit or manual valve body. This weekends shakedown showed me a few things. The old owner said he shifts it himself @ 5k. I tried shifting it as well as leaving it in drive. When I shifted it a 5k it didn't really shift till about 5500-5600. When I left it in D it shifted itself right at 5600. I felt like it was nosing over just a tad both ways. The et was faster by .04-.05 shifting it. I really feel like short shifting it a lil will help a bunch.

Tar Heel 09-17-2013 01:55 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
That's good that you know a reputable tuner. That can make all the difference in getting a car to run the index as well as having a reliable, consistent Stocker.

Speaking of consistent ... I've never shifted any computer-controlled car that I've raced. Turn the traction control off, put it in drive, and go. My thinking is that I'll never be quicker than any computer and definitely I won't be more consistent. Even if I picked up a hundreth or two I want the consistency. When we work hard to regulate the water temperature and ice the intake if traction stays our car is deadly consistent on the ETs by not shifting it.

Dan Fahey 09-17-2013 03:51 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Hey. Kenny

Will be replacing my YankSS3800, installing a new Yank PT 4200 getting the trans rebuilt in next couple months.
When do you need the converter?
The hold up is our 94 Caprice SSuperwagon is at Maaco getting body work done.
Soon getting 3.08's installed and prepped for Towing.

However do have very good suggestion to save money on experimentation.
Buy the YankPT 4400 or 4200 Stall converter right away.
Add Blueprinted cam matching springs, headers, gears, tune and you should be making one second under ET's.


Dan

KennyAnderson 09-17-2013 10:55 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Tar Heel (Post 400431)
That's good that you know a reputable tuner. That can make all the difference in getting a car to run the index as well as having a reliable, consistent Stocker.

Speaking of consistent ... I've never shifted any computer-controlled car that I've raced. Turn the traction control off, put it in drive, and go. My thinking is that I'll never be quicker than any computer and definitely I won't be more consistent. Even if I picked up a hundreth or two I want the consistency. When we work hard to regulate the water temperature and ice the intake if traction stays our car is deadly consistent on the ETs by not shifting it.

I agree, I was just experimenting with what the previous owner told me. Going up to South Carolina tomorrow and I'll have plenty of chances to make hits Thurs thru Sun. One thing I learned and the ex-owner told me afterwards, it runs best at 160 water temp. I experimented at 170-180 and it did slow a tad. It will be tough keeping it at 160 tho if we get hot lapped, especially w/o an ele water pump. I expected a fuel injected car to run better when its warmer.

KennyAnderson 09-17-2013 11:01 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
[QUOTE=Dan Fahey;400438]Hey. Kenny

Will be replacing my YankSS3800, installing a new Yank PT 4200 getting the trans rebuilt in next couple months.
When do you need the converter?
The hold up is our 94 Caprice SSuperwagon is at Maaco getting body work done.
Soon getting 3.08's installed and prepped for Towing.

However do have very good suggestion to save money on experimentation.
Buy the YankPT 4400 or 4200 Stall converter right away.
Add Blueprinted cam matching springs, headers, gears, tune and you should be making one second under ET's.

I like the sounds of this! I will need a converter soon and after some research the 3800 stall might be lower than I want/need. I'm going to try to make an IHRA "pro-am" style race at Lakeland, Fl Halloween weekend. Leaving it alone for this weekend (Div 2 Jackson, SC.) but things will start rollin on monday when we get home. THANKS!!

PS Love the wagon tow vehicle.

Daran Summerton 09-18-2013 07:35 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Dad will have the 5.Slow at lakeland in I/PS
I had a new 2000 LS1 Z28. Bone stock it ran 13.10
Installed Yank TP4400, ET Streets and catback and ran 12.30
Good luck

KennyAnderson 09-18-2013 10:45 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Thanks Daran!

Dan Fahey 09-18-2013 11:33 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Hmmm...
I might be able to run at Lakeland too if I can catch the AutoTrain to Sandford, FL.

Own a home in Altamonte can visit the renter.
Plus can pick up the remaining MA Training at the same time too.

Dan

KennyAnderson 09-18-2013 01:14 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Then get your butt down here! Its my favorite time of year here. Perfect racin weather! 2x chances to race PLUS if my feeble memory serves me there will be a S/SS combo race sat night. Ill look up the flyer.

Dan Fahey 09-18-2013 02:34 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 400596)
Then get your butt down here! Its my favorite time of year here. Perfect racin weather! 2x chances to race PLUS if my feeble memory serves me there will be a S/SS combo race sat night. Ill look up the flyer.

Cannot find the Flyer.
What IHRA Division?

D

Frank B. 09-18-2013 04:26 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
If you have a 93 car it is not shifted by computer. Also your PCM is chip tuned not flash tuned. Just mt 2 cents

bigshow2966 09-19-2013 03:03 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Do the older cars have an Intake Air Temp sensor? I know on my GTO it would pull timing when temps went up. Only problem was it was so close to the radiator it was reading water temps in the stock location. It would slow down a ton.

KennyAnderson 09-22-2013 11:35 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Frank B. (Post 400613)
If you have a 93 car it is not shifted by computer. Also your PCM is chip tuned not flash tuned. Just mt 2 cents

Frank its got a 4L60E tranny. I a total newbie to this deal but I believe the computer controls this one. In 93 they also built some with 700R4's which use a governor. I got the computer dal. After I make my changes I plan on taking it to a local computer car guru to burn a chip for me.

KennyAnderson 09-22-2013 11:37 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by bigshow2966 (Post 400777)
Do the older cars have an Intake Air Temp sensor? I know on my GTO it would pull timing when temps went up. Only problem was it was so close to the radiator it was reading water temps in the stock location. It would slow down a ton.

I dunno. Maybe. Did you just unplug it? I just raced it in Jackson SC and although I wasn't the only one, it was tough predicting et as we had big weather changes every day.

Frank B. 09-23-2013 02:46 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
93 's came with a 4l60 not 4l60e. 94's and 95's came with 4l60e with OBD1 computer. 96 to 98 came with OBD2 computers. Cars with the OBD1 computer have shifting problems with a high stall convertor.

Dan Fahey 09-23-2013 03:18 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Frank B. (Post 401392)
93 's came with a 4l60 not 4l60e. 94's and 95's came with 4l60e with OBD1 computer. 96 to 98 came with OBD2 computers. Cars with the OBD1 computer have shifting problems with a high stall convertor.

That is correct for the 1-2 shift. However there is a 1-2 Fix for the OBD1 PCM's.
You could run up to a 3000 stall converter without it.
More than that the sensor on the rear of the trans shifted preventing the 1-2 shift under load.

Ed Wright or Bryan Herter (PCMforless)can send you a BIN file for the 1-2 Fix.
TunerCat and LT1 edit are two software available for loading and tuning files.

d

KennyAnderson 09-24-2013 08:22 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Frank B. (Post 401392)
93 's came with a 4l60 not 4l60e. 94's and 95's came with 4l60e with OBD1 computer. 96 to 98 came with OBD2 computers. Cars with the OBD1 computer have shifting problems with a high stall convertor.

Ok, thanks, I'm learning!:) What controls the shifts in a 4L60? What type of computer is in my 93?

Frank B. 09-24-2013 11:35 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
The 1993 4l60's shifts are controlled by a govenor with springs and weights. The 93 computer is an EPROM chip type computer that can be reprogrammed by Ed Wright,Bryan Herter,etc.

Dan Fahey 09-24-2013 11:40 AM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by KennyAnderson (Post 401524)
Ok, thanks, I'm learning!:) What controls the shifts in a 4L60? What type of computer is in my 93?

Contact
Ed Wright on Class Racer...
or
Bryan Herter at bryan@pcmforless.com

They are excellent and experienced tuners.
Bryan sent a Bin Files for my car and it ran great.
When he brought the Dyno Truck to Pocono had it Dynoed.
Made tiny change which only yielded a hundredth better ET.

Dan

Dan Fahey 09-24-2013 02:42 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Anyone who wants to get a Car Classified.

Mike Baker from IHRA can send you an IHRA Technical Information Form.
He just sent me a copy.

May create a Database with one of my IT guys to help move the process along.

They have a few already in the pot being worked over.
They are earnestly busy for another month or so to finish the season.

Dan

KennyAnderson 09-24-2013 02:48 PM

Re: Lil IHRA classification help please!! Newbie Alert!
 
Quote:

Originally Posted by Frank B. (Post 401556)
The 1993 4l60's shifts are controlled by a govenor with springs and weights. The 93 computer is an EPROM chip type computer that can be reprogrammed by Ed Wright,Bryan Herter,etc.

Excellent! At least I can adjust the shiftpoints myself. I would definitely have preferred the OBD2 but had no idea and this car was too good to pass on. When a guy like me who hasn't raced off the bottom for YEARS can jump in a car and go to the Div Finals and go rounds, not bad!

PS Thanks again Dan!


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