Some "Dime Rockets" for the 4TH!

[Billy Nees]

75 262 uses a 1.09 venturi 2g. 76 uses 1.18 venturi carb. 267 uses the big 1.218 venturi dual jet. 1.18 2g flows about 320 cfm, big dual jet about 300 but it is more difficult to make work.

[Todd Boyer]

Originally Posted by Dwight Southerland

I have always wondered about that one, BIlly. Does the 1.375" throttle bore front-half-of-a-Quadrajet carb used on the 267 actually flow more than the 1.686" throttle bore conventional Rochester 2-bbl on the 262?

My dime in the pot today may stretch the limit because it is EFI, but it has proven potential.

96-99 Jeep Grand Cherokee 242/190-175/170 MPI
2WD of course! One of the best flowing cylinder heads offered on a pushrod American I6, lots of blueprinted compression, more than adequate camshaft. The offroad guys have developed lots of stuff for this engine and the knowledge base is broad and deep. The throttle body flows over 450 cfm according to Chrysler and there are several "tuneup" controllers available that are affordable. AMC Torqueflites bolt up and some years used Dana 44 or AMC 20 rear ends.

There is a racer in Div 1 (I cannot remember his name) who runs this same engine in a late 80s Comanche pickup and the later engines are even better. Several superceded parts should be listed in the tech bulletins that cover intake systems and the cylinder head that would possibly be even better than the current listings.

This is an R, T, or U car depending on year and model and you could even squeek a 5-speed into the 96 model.

We're up to $.20 in the pot now!

The Division 1 racer who runs this combo is Bob Salemi. I believe Bob got IHRA to allow factory roller tip rockers on this engine also.

[Billy Nees]

Originally Posted by Dwight Southerland

96-99 Jeep Grand Cherokee 242/190-175/170 MPI
2WD of course!

You had to bring that one up, didn't you. I'm vaguely familiar with Bob Salemi's truck and although it took him a long time to sort it out, once he did it flew.
That one sent me scrambling back to the guide to check it out! While I was there, if you can, enlighten me on the 96 Dakota with the 153 4 cyl. Is that based on the 242? If it is then that puppy at 115 HP could be a kickass W combo.

[Dwight Southerland]

The 153 may be the 60 degree V6.

[Billy Nees]

Engine guide says it's a 4 with same bore size as the 242.

[Tom keedle]

Originally Posted by Billy Nees

You had to bring that one up, didn't you. I'm vaguely familiar with Bob Salemi's truck and although it took him a long time to sort it out, once he did it flew.
That one sent me scrambling back to the guide to check it out! While I was there, if you can, enlighten me on the 96 Dakota with the 153 4 cyl. Is that based on the 242? If it is then that puppy at 115 HP could be a kickass W combo.

world of difference in the 150 (2.5l) in a dakota (ohc) and a pushrod 150 in a jeep...

the dakota is based on the 2.2 omni with a taller deck height

the 150 jeep is a sawed off 232 kinda...

[treessavoy]

PT Cruiser with the turbo rated at 180hp which is the same engine as the GT at 220hp except for computer parameters, I'm told.

Same package as the no. qualifier at Indy last year.

JimR

[Dwight Southerland]

This may be the 153 in the 96 Dakota:

http://www.allpar.com/mopar/amc-25.html

[K Stubbs]

Originally Posted by Dwight Southerland

Okay, since I have already let the cat out of the bag on the other thread, I will start with my favorite, the '76 or '77 Camaro, '78 Camaro LT or '78 Firebird Formula, or '79 Camaro Berlinetta with a 305 2-bbl for U/SA. The pluses for this combination and the potential makes it a must look at in my opinion.

The engine is basically the same as the one Billy Lynn and Dean Oliver race in their Malibus in K & L. The only difference is the carb and a smaller intake valve (which may be a plus with the smaller carb!). Those Malibus run 11.80s consistently at 3250 lbs, so we can get a guage on the potential of the U combination from that. If you allow that the switch to a 2-bbl will chop a full second off and the added weight for U (3770 lbs. minimum) will slow by another .6 or so, the U combination should run mid 13s in a class with a 15.15 index. I see lots of potential there to be a competitor.

Then, consider that the 200 Metric or 200R4 is available and the car will be equipped with a GM 8.5" ten bolt. The 200 is a transmission of choice in lots of classes and the 8.5 is plenty strong enough with stock parts for this combo. The body has leaf springs so traction is easy and the plethora of available bolt-ons makes used parts easy to find. There have been several racers over the years chase combinations using the Rochester 2-bbl, so even the carb is not exactly an unknown.

I see lots of affordable potential in these combinations. I think the big problem for most people would be resisting the temptation to go overboard with the cosmetics and tricks that are available and applicable for the engine and car.

Dwight, remember when you and dad built our first 305? It had the wrong heads (two barrel) and we thought we were going to pick up a bunch when we went to the four barrell heads. It was worth nothing, so you are right it should favor the two barrel more.

[Dwight Southerland]

Kevin - Yes I do remember. That was one of the tidbits of info I was using in my analysis.

When are you going to race your beast? It cost a bit more than a dime, didn't it!