could be a TPS problem or a OD sol problem VSS problem or internal pressure problem. Would have to put it on a scanner and look at data to see what's going on.

70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4