Quote:
Originally Posted by bigboybodry
heads up. my combo ended up being a 512 with a pro shot fogger on bottom and sportsman up top, th400 with brake custom, bte custom nos converter and still running a 12 bolt 35 spline axles full spool and 390 gear.
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The 2.48 over the 3.90 is alot of mechanical advantage . Did they specify 28" or just say true 10.5 ? If just a true run a 29.5 . I would test with the 3.90 , but your on the right track . I came up with 3.40 with a 28 " tire and 400 . I had a 3.60 in the garage , so i'll probably be heading that direction .
X2 on the ignition box and pulling timing .