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Old 04-25-2014, 10:07 AM   #5
Molberg
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Join Date: Dec 2012
Location: Manitoba
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Re: TH400 + 3.08 Gears; Motor and Tire size?

Quote:
Originally Posted by voxnor View Post
@Molberg - Fair enough. To elaborate a bit - the "launch" is exactly what I am worried about. This is a DD so I thought the 3.08 was the way to go (for mpg) - but maybe that was a bad choice? I don't need it to snap my neck from a stop sign, but it does need to get moving quickly and be able to chirp the tires for the fun factor.

I'm worried I'll put in a 6k motor with high torque on the low end and simply be wasting it with the rear 3.08. Perhaps a stock 350 Goodwrench engine is the way to go...
I built a 383 stroker/AFR heads/stall etc for the one I'm building now.. I'd go 3.73 final drive if it was me. Had a '72 gmc years back with a built 355/3.08's and 15" rims. Lots of launch when it had a 4 speed standard in it.(M21 I think?) Blew up the tranny racing and dropped in a th400. It was like I lost 100 HP... and it was all gear ratio alone that did it.
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