Jerico tranmission
 

I've heard that a few guys have used them in Stock Eliminator, but I can't find any solid info if its NHRA accepted as an aftermarket transmission. I couldn't find anything on the NHRA site. Maybe I looked in the wrong places? Any info would be appreciated.

Re: Jerico tranmission
 

a few? Like 90%

Re: Jerico tranmission
 

Roger that. The Jerico is most common, many Gforce and a few G101s. All good stuff too.

The Jerico is the lightest and can take a beating for most stockers. HEavy high HP cars sometimes opt for the Gforce.

Do some research and ask questions. It will be worth it. Any of these transmissions with a quality clutch is a ticket to fun!

Re: Jerico tranmission
 

I am curious as to "Why" these transmissions are used, I have thought sometime down the road about putting a clutch pedal in and going stick for lots of fun

Why would I not have my say Viper 6 speed that came with the DP built to handle the power for 2k instead of buying one of these ? (we unlike most DP owners got a NEW, not Core trans) Or should it hit Ebay or another project for a Jerico or GForce.

What are the internal differences ? What makes them "special" instead of say a M21 or Super T10 ?

I simply dont know and would like to from someone "in the know"

Good thread Jerry

Re: Jerico tranmission
 

This could take a while if you think that stuff is even close.

M21s and ST10s are street tranies. Even if they are proshifted, they are no match for any of these dedicated race transmissions. The Jerico for example is lighter, stronger, more efficient. Not to mention a mch better selection of ratios.

Keep your eyes open at the track. Go to the web sites for Jerico and Gforce and take a look at what they offer.

You will soon realize the difference.

Re: Jerico tranmission
 

Ill look, I understand the reason now , if not the why....the why I can figure out.

Im just a little leary of the "because everyone does" if everyone does for a REASON and they all have the same reason cool.

If they all do because the others are doing but themselves dont know why....well....

Ive got a NOS ST10 from a 79 firebird, new never used......theres a reason for it even in my book....there are better options it just was an "off the head" example I had a close ratio muncie with straight cut gears "set up" years ago, It was a beast, and could handle everything I threw at it, but it was never "fast" it was a sherman tank....but....well that was why it went in that car.

Re: Jerico tranmission
 

It has to do with the "cut" of the gear or the way it is machined. If you get a chance talk to Jerry Hemmingson sometime. I met him up at Joliet once and was in total awe.

Re: Jerico tranmission
 

Sometimes being a pioneer is a good thing. This is not one of those times......

Don't take my word for it, I don't know anything.

Re: Jerico tranmission
 

Hey....I believe it....the saying was just "saying" I see a lot of people doing things they dont know why....If I were to run a stick, Id go with one of those 2, at this point Id be one of the crowd doing it but not really knowing the nuts an bolts, just that I should be.

Hey now I believe it 100% when I have time Id like to know the how, like as in the mechanical aspects and differences. Might learn some cool stuff I see a lot of room for improvment in car manuals for racing from bikes, maybe theyve already applied those things.

How are guys shifting these ? Cant be by hand ? Or is it ? And clutch ? Are we talking a pedal, like as in rowing a 4 gear ? I cant believe thats the way its done....is it ?

Re: Jerico tranmission
 

Muncie's broke regualrly. I know I ran one in a 12 second Stocker with 7" slicks.....ST-10's came out and they were going to be the hot ticket......WRONG.....If you ran one without touching it, the gears might sieze from being to tight. My friends MP car did it . I honed gears with a flex hone trying to loosen it up for him and that did work...........They both were used extensively but needed a lot of work and sometimes broke.....

First they were "slick shifted" then "pro shifted".....If you missed a gear they needed to come apart to be fixed.....

Doug Nash was the next trans to come along and they did hold up pretty well...

There was a guy running a '57 Corvette at my local track in Pro bracket.....The car is just like a Jr Stocker from the 60's. Stock body, small tires........Slapper bars and low 12's with various small cube small blocks, He had a Jericho in it and he told me it had more runs than he could count on it over the years and it was never out for repair.....I think he finally broke it and put an automatic in it.....

Re: Jerico tranmission
 

This video will show you alot. Watch Jim in action and pay close attention to his nano-second clutch work on shifts. wink,wink.



http://www.youtube.com/watch?v=-xHXjTQWxwM

Re: Jerico tranmission
 

Thanks VERY informative

Man his clutch leg moved so fast the video didnt even catch it ;)

Re: Jerico tranmission
 

It's all about strength and efficiency, that's why you don't see OEM style trans in S/SS classes. Remember, at one time a quick trip to the wrecking yard and $75 - $125 bought you an OEM 4-speed with a 2.20 low gear. Those days are gone.
And let's say you have an inventory of 'em and you want to race with one. First you have to come up with a gear spread that starts with a 2.95 or so low and a 1.20-1.40 third that doesn't drop a ton of RPM on the splits. Almost impossible.
And whatever ratio's you run, you have to modify the heck out of it for strength.
The Viper trans is a long way away from taking a 500 HP engine and a solid hook on a 9" slick although the press release from today could ad some strength. But I seriously doubt it is enough...
A Jerico is around $2800 brand new with gears of your choice, ready to race. Is that too much? If so, let's talk about an auto trans for dedicated S/SS use with a convertor or two (or three or four..)

Press release:

Posted - 04/07/2010 : 8:16:22 PM
--------------------------------------------------------------------------------

Attention Street/Strip Enthusiasts

G-Force Transmissions and Long Shifters is pleased to announce some exciting new products to their already vast transmission and shifter lineup. With today's modern street cars it has become relatively easy to bolt on more than enough power to surpass the factory torque/hp ratings of virtually any OEM-style transmission. With this in mind,
G-Force has come up with a wide array of upgrade kits for most of the popular domestic OEM transmissions available today. The kits allow for factory-style installations to eliminate the need for crude and expensive modifications to the tunnels and/or crossmembers on most cars.
New Product Spring 2010


3650 Kit Available in Late Spring 2010

Already available are the T5 and T56 upgrade kits for the Mustangs, Camaros, Vipers, and a host of other vehicles that utilize one of these two transmissions. With thousands of these kits already sold, G-Force has come up with another exceptionally durable gear kit, only this one is for the 3650 transmission that comes in the 2001 to 2010 V8 Mustangs. This is the first aftermarket gear kit offered for this transmission and we've taken the unprecedented step of offering this kit with precision ground gears to help eliminate some of the NVH (Noise, Vibration, and Harshness) associated with inferior aftermarket gear kits. The gear design is from our proven T56 combination so there is already a vast database of testing experience with this particular design. A 2.90 1st gear is standard on these kits as is a .58 overdrive gear to accommodate for the typically steeper rear gear that most cars run for street/strip applications. Great for launches and even better that stock fuel mileage in most applications. This transmission can also be retrofitted into virtually any other vehicle with the addition of the special adapter that we make for "early-style" installations.

For more information, please give G-Force a call at 717-202-8367, M-F 7:30 to 4:00 EST.
Product Highlight

GF5R
GF5R

Reconditioned 5-Speed GF5R's available
The GF5R 5-speed transmission from G-Force is still one of the most durable and versatile transmissions available today. With both clutch-assisted and clutchless configurations available, the GF5R can be utilized in most any class or form of racing. We are now offering remanufactured GF5R's that have been traded to us at tremendous savings over new units. These transmissions have been gone through extensively and have been freshened up with all necessary parts. They typically range in price from $4,000 to $5,000 depending on model and application. Both clutch-assisted and clutchless models are available. We will do everything we can to tailor the ratios to suit your needs wherever possible. For more information, contact Jason or Bubba at

G-Force at 717-202-8367, M-F 7:30-4:00 EST.
SPECIAL PRICING



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G101For a limited time G-Force will be offering our G101A and GF4A 4-speed transmissions at special pricing. Now you can save anywhere from $100 to $400 off the regular price depending on application and model. For even greater savings, consider one of our reconditioned units that are built from high-end circle track take-out parts and in most cases are built with new cases, tailhousings, and shifters. These units are from our circle track rental program and/or trade in parts from top teams. The parts are like new, except for the price. These remanufactured transmissions typically range in price from $2,500 to $3,500 depending on model and application.

For more information, contact Bubba at 717-202-8367.
Shop Tour

No Compromise in Quality
Shop Tour

Long's Machine & Tool, parent company of
G-Force and Long's Shifters, has been producing high performance transmissions and shifters used by many of today's top Nextel Cup and NHRA racers for more than 14 years. The company's products are engineered using the most up-to-date CNC machining technology and computerized inspection equipment to optimize accuracy and repeatability.

Thanks for Your Business
The G-Force Transmissions Staff-

Re: Jerico tranmission
 

Cool on the press release, but no, I could get 1500 out of the Viper tranny on Ebay and put that twoard a new trans if we go that route.

Put lipstick on a pig.........

I know guys are modifying them to handle 1500+ hp, but youre right thats not hard lauch, and with that it would probably become "lunch" it was curiosity well....because I dont have a use for it...lol

No its a hell of a lot cheaper a grand a converter 4-5k for a "right" trans with all the trick stuff.....

Re: Jerico tranmission
 

Thanks for the replies. Worked late tonite on the DP and all the while kept thinking about running the Jerico. We already have a Lakewood bell housing but would need a custom flywheel and linkage assembly and hopefully not have to touch the trans tunnel. Some more things to think about, but it looks like this could be the route we go.

Re: Jerico tranmission
 

If you decide to go that route give Advanced Clutch a call they have it covered.

Re: Jerico tranmission
 

Jerry, Called GForce today, theyve got some "used" refurbed units that are "nascar" 4 speed "clutch assisted" units for 2700 with shifter your choice Zgate or H

Apparently something changed in Nascar so they got all their leases back but its the same as the Drag, they said they can do any ratio combo on these.

Sounds like a good deal.....(only on 4's)

Can be shifted without a clutch just has momentary "neutral" while it does as opposed to the twin shaft delio....that always transmits power but that is called a clutchless, technically it wouldnt be legal from the way I read the rules, but the "clutch assisted" would be ? Is this "correct" ?

Just some info for all...

Re: Jerico tranmission
 

I'm assuming that the liberty transmission is accepted too, right???

Re: Jerico tranmission
 

Jerico and Advanced Clutch, only way to go

Re: Jerico tranmission
 

Liberty web site says twin countershaft "delio" legal for SS . Twin countershaft does not equal clutchless. Split or individual gear engage disengage = clutchless..IMHO..Thanx Trevor

Re: Jerico tranmission
 

Beware of the Nascar trans. They have a harder gear set and will not hold up to shock, like a dragrace trans. The G-Force I bought a couple of years ago was a trade-in. They put all new parts in and re-gear it to what you ask. Mine even came with a magnet already installed in the input shaft for data aquisition. This is used for calculating clutch slippage.

Sean

Re: Jerico tranmission
 

Thanks for the tip. I'll definatly look into it.

Re: Jerico tranmission
 

First off, excuse my sarcasm, but you did not answer my quesion. I saw that one of the options on the new CJ's is the liberty transmission and I was planning to get the same one with different gears off course, I'm running NA and I was checking in the website for liberty transmission 5 speed and the price was 4995.00 and for the jerico tranny was 5500.00 I mean don't give me wrong quality transmissions worth the money but anything I can save means more beer for me,

Re: Jerico tranmission
 

Liberty sells more than one trans. If you want an answer to a specific question your probably best to start a new thread. ...Thanx Trevor

Re: Jerico tranmission
 

Bill, you have a PM.

Re: Jerico tranmission
 

OK, thanks Trevor...

Re: Jerico tranmission
 

Dave, you have a PM

Re: Jerico tranmission
 

More skilled and experienced then myself but I'm kind of surprised he grinds hard going into reverse and doesn't let the trans spin down for a second or three and then he clunks going into first while still rolling. After coming out of reverse it should go into first like butter even without making a complete stop.

Re: Jerico tranmission
 

"Drooze"
Why a aftermarket Transmission?
Just look at the internals parts.
The gear strength and the built in durability.

Re: Jerico tranmission
 

[QUOTE=Chris "drooze" Wertman;180776]Jerry, Called GForce today, theyve got some "used" refurbed units that are "nascar" 4 speed "clutch assisted" units for 2700 with shifter your choice Zgate or H

Apparently something changed in Nascar so they got all their leases back but its the same as the Drag, they said they can do any ratio combo on these.

Sounds like a good deal.....(only on 4's)

Can be shifted without a clutch just has momentary "neutral" while it does as opposed to the twin shaft delio....that always transmits power but that is called a clutchless, technically it wouldnt be legal from the way I read the rules, but the "clutch assisted" would be ? Is this "correct" ?

A lot of strange info on this thread. First off, the difference between a clutch assisted and a clutchless is the result of a split slider, the trans is actually in two gears at once when shifted but because of the speed of the gears, it pops out of the one gear as soon as the other is engaged. Regarding, shifting a clutch assisted trans without the clutch, nothing is needed as long as you have a faceplate type trans, you just reef on the shifter and it will engage the next gear. I have raced both clutch assisted (without the clutch) and clutchless, no big deal either way. In Stock where clutchless is not allowed, pretty much everyone is shifting without the clutch, this has been done for quite some time with no problems.

Re: Jerico tranmission
 

What am I missing here? This is a 2010 thread. No disrespect toward anyone, but I am confused. Thanks Danny

Re: Jerico tranmission
 

Turned from 2010 to 2023 thread at #28.
I missed that, too

Re: Jerico tranmission
 

Adger,

Like myself you may not have noticed how old this thread is.

Chris passed away several years ago.

Bill