What should this car run?

skiwesser · 11-09-2007, 01:41 AM

I think 8.20's as well, the old bolt on motor with shaved E7's went 8.75 @ 79.8 at another track.
I believe the combo of spinning off the line due to first time on ET streets, and I only had one pass that I felt good about all the shifts(but I spun bad and ruined that pass), resulted in the disappointing ET's and 60 ft's, plus I don't really like that track.

Anyway I'll get it done , should I stay on the MT's or go back to the Mccreary's?????
If I stay on the ET Streets what air pressure should I be at 16-17 lbs is my usual at that pressure the MT's spun but the taller Mccreary's HOOK, But I got the shorter MT's because I figured a 26" tall tire would work better than the 27" MCreary's which are actually dirt track tires but i've used them awhile cause they're $100 a piece and last a long time.

Dark_5.0 · 11-09-2007, 10:37 AM

Quote:

Originally Posted by skiwesser

I think 8.20's as well, the old bolt on motor with shaved E7's went 8.75 @ 79.8 at another track.
I believe the combo of spinning off the line due to first time on ET streets, and I only had one pass that I felt good about all the shifts(but I spun bad and ruined that pass), resulted in the disappointing ET's and 60 ft's, plus I don't really like that track.

Anyway I'll get it done , should I stay on the MT's or go back to the Mccreary's?????
If I stay on the ET Streets what air pressure should I be at 16-17 lbs is my usual at that pressure the MT's spun but the taller Mccreary's HOOK, But I got the shorter MT's because I figured a 26" tall tire would work better than the 27" MCreary's which are actually dirt track tires but i've used them awhile cause they're $100 a piece and last a long time.

I run 10-12 PSI in ET streets. I do a good second gear burnout. I then dump the clutch @5000rpms and I get a loud chirp on the launch and on the shifts.

Your mph in the 1/8th is what is most troubling. You are not gonna get a much better ET with a 80mph trap speed.

What was your uncorrected HP when you went to the dyno?

skiwesser · 11-09-2007, 12:15 PM

I don't know?
uncorrected HP wasn't brought up, to be honest I don't know what it means??
Trap speed is what worries me too as it stayed in the 80.3-80.8 range every run.

USMC302 · 11-15-2007, 01:36 PM

Well I think we just hit the nail on the head, you are running way too much air in the ET's, run 10psi, heat the crap out of them and launch AT THE MINIMUM 5K, I launch at 6k with the ET Streets with 10psi and run 1.68 60ft's all day.
On a side note, are you running an off road pipe? What's the roller rocker ratio? What's the timing and F/P at? If you really want to get into the tune and squeeze more out, get a good wideband on it and we can fine tune lots more from that.

11-09-2007, 01:41 AM	#1
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Re: What should this car run? I think 8.20's as well, the old bolt on motor with shaved E7's went 8.75 @ 79.8 at another track. I believe the combo of spinning off the line due to first time on ET streets, and I only had one pass that I felt good about all the shifts(but I spun bad and ruined that pass), resulted in the disappointing ET's and 60 ft's, plus I don't really like that track. Anyway I'll get it done , should I stay on the MT's or go back to the Mccreary's????? If I stay on the ET Streets what air pressure should I be at 16-17 lbs is my usual at that pressure the MT's spun but the taller Mccreary's HOOK, But I got the shorter MT's because I figured a 26" tall tire would work better than the 27" MCreary's which are actually dirt track tires but i've used them awhile cause they're $100 a piece and last a long time. __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-09-2007, 12:15 PM	#3
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Re: What should this car run? I don't know? uncorrected HP wasn't brought up, to be honest I don't know what it means?? Trap speed is what worries me too as it stayed in the 80.3-80.8 range every run. __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-15-2007, 01:36 PM	#4
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Re: What should this car run? Well I think we just hit the nail on the head, you are running way too much air in the ET's, run 10psi, heat the crap out of them and launch AT THE MINIMUM 5K, I launch at 6k with the ET Streets with 10psi and run 1.68 60ft's all day. On a side note, are you running an off road pipe? What's the roller rocker ratio? What's the timing and F/P at? If you really want to get into the tune and squeeze more out, get a good wideband on it and we can fine tune lots more from that. __________________