Hello guys I havnt posted in awhile on here i sorry if im posting in the wrong place. I just got my 1991gt back together and im going to take it to the track this weekend and need some advice on timing and fuel pressure. its a stock block, comp cam, trickflow heads ported and polished 170cc 2.02in 160 exh a cobra intake with a 70mmbbk tb, it has 42lb injectors 255bbk in tank pump and an inline msd fuelpump, mp t76, intercooled 38mm wastegate, open 3 downpipe, 3.08 in the rear with a 26" slick, a spec stage 3 clutch, 5spd. and a mallory ignition like a btm, I currently have the timing at 10* spout in and the btm 2* every pound of boost, and im only running a 5lb of boost. Im not leaving on a 2step yet. Tell me what you guys think it will do

 

Re: What will my car run??

I would say 12.50's and you should be able to pull 1-1.5 degrees per pound timing.

 

Re: What will my car run??

depend on if you can drive or not...lol j/k how much does the car weight? kind of a big turbo with a rather small heads and only 5 psi.....im going to take a guess at 12.90's.

Post up the time slips when your done having fun. Good luck! keep it between the ditches!

 

Re: What will my car run??

im not sure on how much the car ways i have taken off a few things, and i hope I can drive it well!! lol I will post up what it runs

 

Re: What will my car run??

This is like past time.....I love that show! What do you hope it runs?

 

Re: What will my car run??

Everyone says it will run a 13.5 et. I really hopes its alot faster than that Im taking a 7lb spring with me to! lol. I would like a 11.99

 

Re: What will my car run??

It should run that wig no probably even if you can't drive....LOL

 

Re: What will my car run??

With a slick and 7psi you should be able to grab some hi 11's. Good luck. Keep us posted

PS. FWIW with a 3300lb car (no driver), Slipping clutch, blown HG, performer headed stock cammed 100k bottom end I went 12.6 @7psi. Thats with nitto's. And when I say slipping clutch I mean 4th gear was like a 5000rpm stall converter. You gotta be able to grab 11's

 

Re: What will my car run??

Impressive gotta a good shot at that 11.99

 

Re: What will my car run??

With 3.08 gears, just hurry up and get that sucker in 3rd gear and let it eat.

 

Re: What will my car run??

Should have no problem running mid 12's

 

Re: What will my car run??

Ok guys here it goes friday ran into a small problem with the 26" slick one had a crack in side and had a small leak, so I had to borrow some 28" so I was a little nervous on how the car would respond. both passes were on 5lbs of boost rev limiter was at 5700. First pass the car spun alittle. so the second pass I lit the tires up and then it fell on its face! I was leaving at 3000 maybe I just cant drive! lol

first pass 2nd pass
1.942 60ft 2.080
12.760 ET 12.861
114.24 mph 114.18

 

Not bad at all. I'm sure the 28" tire combined with a 3.08 rear made it pretty touchy off the line. 5 speeds are a bitch. Once you get the boost cranked up with a tune you'll be in solid 11's no prob. Mid 12's with only 5psi is pretty good I think

 

told you so....lol j/k there sounds like there is a lot of room for improvement! keep us posted.

 

I agree, thats pretty good for 5#. You'll be at 10-12# before u know it! mid to low 11's!

 

that's a good ET for low boost and 60'...

 

Thanks guys! Im gonna change the rear gear and put 327 or 331's and put a driveshaft loop! What tire is good to run with that gear?

 

with a 26" tire and a 3.27 gear you'll be runnin about 5000 rpm at 120. So if your goin thru the traps around 120-130 you'll be in the low-mid 5000's rpm. That should keep you good up to 600hp

 

OK guys I got my 327's in Im gonna run some mt dragradials 255's on 16" rim, and I ordered a 8.7lb spring for my waste gate, and the next track date is june 20. Hopefully I can get a better time what do you guys think?

 

well I havnt posted in a while lifes been krazy! BUT FINALLY i took the car to the track. only change was the 327 and 9lbs of boost and ran a 12.2 at 120.6 the t5 was grinding 1st and 2nd so i shifted at 4500 and that was the best i could do. 8)