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jwhotrod · 10-12-2019, 11:56 AM

at that setup you will never use overdrive (4th gear) I have a 3:55 gear behind the zz4 in my 34 Chevy and it is a little boggy in overdrive at 55-60 miles per hour. If you are going to use the 3.08 rear you'd be better off with a turbo 350 trans. Especially with 15 tires which are usually around 29" tall. My 35 chevy has a 700r4 in it with a 4:11 gear and 29" tall tires and it is much happier the other. Fun out of the hole and 2400 rpms at 70mph right in the power band so it doesn't bog. Good luck

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10-12-2019, 11:56 AM	#13
jwhotrod Registered User Join Date: Oct 2018 Location: DeKalb, IL Posts: 154	Re: Rear Diff questions at that setup you will never use overdrive (4th gear) I have a 3:55 gear behind the zz4 in my 34 Chevy and it is a little boggy in overdrive at 55-60 miles per hour. If you are going to use the 3.08 rear you'd be better off with a turbo 350 trans. Especially with 15 tires which are usually around 29" tall. My 35 chevy has a 700r4 in it with a 4:11 gear and 29" tall tires and it is much happier the other. Fun out of the hole and 2400 rpms at 70mph right in the power band so it doesn't bog. Good luck ;