What gear to use with the 402/th400??

[gregbr]

Hi All! On my restored 70 GMC (see pictures in signature) it came from the factory with the 402/th400 & 3.07 gears. Engine rebuilt, 30 over, Crane 270-2H (WG1104) cam, timing set at 10BTDC, factory intake & exhaust manifolds & Rochester, th400 stock rebuild with 350 torque converter, Eaton series 3 posi. While it drives great on the open road 55-60 (I always baby it), it seems sorta sluggish on take off. I'm thinking about a regear to a 3.42 to keep the same Eaton Posi.

Only driven to local shows and occasional trips around town. Would never drive it long distance or above 65, stays garaged, can't leave it out. What would you do & why?? Could I still be off on the timing and make a difference??



Just checked those pictures and I never loaded the ones showing it completed. Will fix that this weekend.