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Subaru_dude

So I swapped out the old 5spd in my '84 hardtop in favor of a junkyard replacement...

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And now it's a 4 speed. Just great. What rpms should I expect to run on the interstate? This car will be seeing alot of 70mph...

Edited by Subaru_dude

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I believe the gear ration of 4th gear int he 4-speed is actually a touch taller than 5th gear int eh 5-speed.

 

That means your RPMs should be slightly lower at speed with the 4-speed than the 5-speed.

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That really depends on tire size,and what year of car the transmission came from. It may only apply to 4x4 tranmissions, but I believe the earlier 80-82 4 speeds had lower gearing.

 

I know there is a transmission gearing table floating around here somewhere. I can take a guess and say you will be running around 3,500-4000rpm

Edited by 81EA81

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Just took it for a ride on the interstate. It's geared exactly like a five speed... without fifth gear. Which totally sucks because I work an hour and a half away.... NOT FUN.

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