Can anyone tell me what rear end to use in a 4th gen, firebird for budget dragracing? This car was a v6 car and want a stronger rearend of course.

Asked by Jun 25, 2015 at 03:08 PM about the 1997 Pontiac Firebird Base

Question type: Car Customization

1 Answer

1,535

Rear end ratios are very important in drag racing & hooking-up for launching the car. It also depends on the tires. Street tires (radials) don't need much like 3.23:1 to 3.90:1 Street legal cheater slicks 4.10:1 Drag slicks 4.56:1 All out high hp cars use 4.88:1 Like on my 69', 427 L-88 SS Camaro. Don't forget a posi traction differential & traction bars too.

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