Thread: what gear ratio
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Old 05-09-2017, 05:07 PM   #1
stella16
1959 Chevy Apache 4X4
 
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Drives: 2017 ZL1
Join Date: Feb 2016
Location: North Texas
Posts: 420
what gear ratio

need some help guys
I'm debating on putting chevy's LS3 430 horse in my old truck . It's a connect and cruise package with the 4L65E transmission. Overdrive of .70

I can't seem to find the power band specs for this engine

I'm trying to decide what the optimal highway rpm would be. 60, 65, 70 mph

I have 30" tall tires, .70 final drive

anybody?
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