Quote:
Originally Posted by JLBIII
Currently have 2.56 gears and Saf-T-Trak rear un my 68 FB with 400HO and TH 400. I'm looking at replacing gears and carrier to either 3.36 or 3.55 and the correct posi unit. Plan to eventually put in an OD. Which would be the better street gears for the 400HO engine? Thanks
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Assuming tire wheel combo is close to stock sizes. I am partial to less is more especially since TH400 stays a while longer. The next series gear OEM is 2.93/3.08/3.23 and a good set of any of those is a solid improvement but still good drivability with 3 speed AND with a a ring spacer one could retain the 2.56 Safe T Track unit if its in good shape currently. The new Eaton posi is in the 3.36/3.55 and up series and either of those ratios is probably perfect WITH the OD but also a new Auburn can be bought that fits the 2.93-3.23 gears.. Used open gear set is pretty easy to find cheap in decent shape. For me the final answer is 3.23
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