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Old 11-30-2015, 04:15 PM   #14
Kjun_kid
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Join Date: Oct 2014
Location: Pass Christian, MS
Posts: 11
Re: Swap "granny gear" 4speed to a m20 4 speed muncie

I'm bringing this thread back up to ask a gearing question. I have an 87 stepside that i plan on putting my Muncie M20 into. The truck now has the TBI 350 and 700R4 with im guessing is 3.08 gears in the rear end because at 70mph im at about 1800 RPM. When I swap to the manual will this gearing be ok for being in traffic or am i going to constantly have to ride the clutch? The reason I ask is because a guy I know local has an 87 with a 5.3 with a t56 which has a lower first gear then I have and he's got the 3.08 as well and told me he has trouble in stop and go traffic. Should I put 3.42 or 3.73 gears in it? I'll be running a 5.3 as well, and im sure cam might have a lot to do with how well the truck idols in traffic with a load on it compared no load. I just figured that these truck came with a TH350 and 3.08 gears with a low horse power 305 and they seem to get around just fine.
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