Tech1224
New member
My uncle would like to drive his 74 corvette over 100 mph but at 65 mph the rpm's are at 4000.
He has a 4 speed manual transmission .
He has a 4 speed manual transmission .
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My uncle would like to drive his 74 corvette over 100 mph but at 65 mph the rpm's are at 4000.
He has a 4 speed manual transmission .
where can we find spec data for gear ratio?
Another option is to leave the rear alone and consider a 6 speed tranny.
Yeah- I know a 6 speed is more expensive than swapping out a rear gear- but it certainly would get down the street quick and hit 100 with a double overdrive.
My uncle would like to drive his 74 corvette over 100 mph but at 65 mph the rpm's are at 4000.
He has a 4 speed manual transmission .
I have changed the rear end gears and have had 4:11, 4:56 and 4:88. I think the car may have 4:88. A good all around final ratio is a good topic for discussion. I would say he should change it to something in the 3s, like 3:36. Another factor is the type of manual transmission in the car - close ratio or normal ( don't know what they call that). The normal transmission has a much lower first gear so that cars with 3:36 have an easier start.
My uncle would like to drive his 74 corvette over 100 mph but at 65 mph the rpm's are at 4000.
He has a 4 speed manual transmission .