Drag Racing Discussions > Front Engine Dragsters

Rear gear with a 3 speed

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jeff/21:
we ran a 4.86/1.76 and 33"x 10.5 tires tried 4.30 and 4.10 and slowed down our SLR 8.55 with TALL tires small blocks need rpm
in your case as stated above try 2nd gear starts you need the rpm down the track.
question how big is your SBM?

retroboy:

--- Quote from: Calkins on July 15, 2018, 10:24:49 AM ---
I am in the same boat, I want a C4 behind my Y Block Ford engine.  Call it stubbornness or call is stupidity.  But, I want a Ford powered Ford with Ford parts.  I will give up performance for the pursuit of happiness.

As my favorite quote says;  A chump like me will always choose passion over common sense...

--- End quote ---

I Mate of mine ran a very light slingshot with a basic 302 and C4.  Had a 3.7 rear and 28.5 tyre. Used to just glide the fronts an inch or two of the ground. You could only see it in a pic not with the eye so no probs with ya Y Block.

Cheers

jeff/21:
the car was 160" heavy 1700 lbs had a rad water pump and battery if the motor is built to turn 5-6-7-8 or 9000 rpm i like it to turn that rpm just before the finish in high gear

jeff/21:
i would like to add  that it isn't always possible especially in 1/8 to the top of 2nd 3rd by changing trans gear first choice or tire size or rear gear than up shifting and going through lower rpm

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