tiered of 11.00's in my gn

[gene kerr]

tierd of runing 11.00's did this with a 61/63 ,50#ers,perc.116 fuel, front mount,xp pump,hyd. roller 212 212 - 114 lobe sep. - 503 lift, ported heads steel,3800 stall - th400, want to step up the turbo and inj. but use stock computer still what turbo do you guys think would be good and are 60#ers good enouf my goal is 10.50's if possable

 

[norbs]

You could go with a precision 70gtq 4 bolt turbo using a 3-4bolt adapter and a custom made DP. The injectors I would upgrade to 83 and use a modfied ecm from the any of the guys like turbo tweak etc, maybe a maf translater pro also. If the th400 doesn't have a brake, put one in too...and hold on

 

[GN84Turbo]

Maybe get 3.73 gears, that could help.

 

[vacuum 6]

Must suck running 11.00. At about 650 hp (~10.50) the 60s would be running 90% DC. I would go bigger or put alky on the car. Talk to Eric (the TT chip guy) he'll tell you want you need.

As far as a turbo go BB. Heard a lot of good things about the GTQ70 and CPT70-BB. Go with a 70 you got a lot of stall.

 

[vacuum 6]

Good read...http://www.turbobuick.com/forums/tu...16314-bb-turbos-precision-vs-turbonetics.html

 

[bison]

tierd of runing 11.00's did this with a 61/63 ,50#ers,perc.116 fuel, front mount,xp pump,hyd. roller 212 212 - 114 lobe sep. - 503 lift, ported heads steel,3800 stall - th400, want to step up the turbo and inj. but use stock computer still what turbo do you guys think would be good and are 60#ers good enouf my goal is 10.50's if possable

My thoughts are this. Id get a wideband datalogger if you dont already have one. Make sure your converter slip isnt to high and go with a 6776. If your converter is too loose up top it will eat up mph. Your out of injector also. Pump is being run close to its limit also. If you plan on only going 10.50's go for the 60's. If you want to go faster and dont plan on running in a class and have the $ i would consider going with a 4 bolt turbo setup and at least some 83's. Right now you could spool a 76 BB GTQ with a 4 bolt .81 if your converter is truly a 3800 stall.