Tranny dilemma~!

Ok, I am in the process of building a 4 speed tranny for my 68 Charger. I was able to find 3 extra 4 speeds, 2 A-body and 1 B-bodies. I now have 2 each 2.66, 1 each 2.45, and a 3.09 OD gear sets. It was suggested that I want the early A-body 3.09 gear set for my application.

I am running an extremely mild 572 StageV Hemi and 3.55 gears and I don't have tires yet . So from the experience of the Moparts tribe, what should I do? Should I try and trade a gearset? Or do I want to run what I now have? If run what I have, which set and why?

Thanks Tim

I believe the 3.09 is a 6 cylinder gear and not that strong. plusw qa big drop to second.
You have enough torque to sdtsay with a 2.45 or 2.46 there's little difference but a 4.10 gear would be the tickedt

I am planning on driving this on the street, that is why the 3.55 gears.

The 2.45 or 2.66 1st gear will be fine for you. Big cubes, lots of torque down low. The 3.09 was a 6 cylinder trans only to get that little thing moving. I don't think it was any weaker than the others per se but you won't need that steep of a 1st, plus as Fred said, there is a bigger spread between 1st and 2nd.

I'm a big fan of the 3.09 low gear for the street, I use 3.23 gears and get the same launch as 2.66 with 3.91's.

Sure there's a big drop between 1-2 but torque covers that.

3.55 gears? 8 3/4? I hope you don't plan on getting too crazy with the clutch and loud pedal.


Tim

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3.55 gears? 8 3/4? I hope you don't plan on getting too crazy with the clutch and loud pedal.


Tim

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He's using a 23 spline , he'll probably blow that up before the rear