buickstv87
New Member
- Joined
- Nov 28, 2005
- Messages
- 3
hi im new to this so please bear with me my car shifts at 4000 rpm fine if i move the detent cable to where turn more rpms it will act like the valve springs are bad i can let up on the throttle and it will shift & pull good it does this on the 1-2 shift could it be something in the trans checked valve springs by holding car in 1st & running it up to 5000 trans has been rebuilt with the good stuff car runs 7.80 1/8 5 psi launch stockturbo intercooler/exhaust/blue top inj/good heads 1.77 valves im sure it would run alot better with a 1000 more rpms any help would be greatly appriciated thanks steve