I have a 2140 pound Vega running 6.00 in the 1/8 mile. 383 small block. I have a 5.13 in the car now and thinkng about 4.88 or 4.56.Right now the car is crossing at 7100. I think that is to much.I am thinking about a 4.56. What everybody think. Converter flash to 6400. Thanks

quote:

Originally posted by blowerman:
I have a 2140 pound Vega running 6.00 in the 1/8 mile. 383 small block. I have a 5.13 in the car now and thinkng about 4.88 or 4.56.Right now the car is crossing at 7100. I think that is to much.I am thinking about a 4.56. What everybody think. Converter flash to 6400. Thanks

I don't know which finishline RPM your engine might prefer, but I'd have to assume your valvesprings might last longer with something lower. I'd try the 4.88 and see how you like that. Bear in mind, the gear change is going to make the converter flash slightly higher. Just one opinion. Take care. Tom Worthington

RPM Calculator & Tom is right the converter will flash higher.

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