9.94@149mph M6 88mm turbo LS9 RX-7 NT05R tires
11-29-2014, 03:26 PM
#1
9.94@149mph M6 88mm turbo LS9 RX-7 NT05R tires Running on low boost and Nitto NT-05R 275/40/17 street drag radials with 20psi in them.... I ran probably the easiest looking 9 second pass (my 1st). I really need a stickier tire as these are pretty much at their limit unless we get the traction control working (Davis Technologies..... working with the Holley Dominator EFI). My buddy Mike built the car and owned it for many years.... always improving upon it and adding larger turbos. He tuned it and we made these passes before visiting any dyno. I own it now... he is still heavily involved in the car to see what we can get it to run. I've been driving it at the past couple 1/2 mile shootout races where it also lacks traction below 150mph.
Other passes were low 10's with blowing off the tires at the start. Very tricky to launch this car on these tires. Turbo spools well. 8psi with air filter on.
Combo:
3050lb with driver RX-7. LS9 block, stock LS1 $100 crank, good rods/pistons, Morel link bar lifters, MAST LS3 heads, LS9 gaskets, stock LS3 intake, ID1650s, 90mm TB, T4 PT8847 billet wheel turbo, GZ Motorsports vacuum pump, e85, approx 8psi (750rwhp). T56 Magnum, McLeod RXT clutch, 3.31 gears out back in a solid 8.8" rear with Mustang style 4 link pickup points. I drove 100 miles to the track doing 80 and a handful of 3rd/4th accelleration blasts on the highway and still managed 18mpg. The small cam really drives well.
Other passes were low 10's with blowing off the tires at the start. Very tricky to launch this car on these tires. Turbo spools well. 8psi with air filter on.
Combo:
3050lb with driver RX-7. LS9 block, stock LS1 $100 crank, good rods/pistons, Morel link bar lifters, MAST LS3 heads, LS9 gaskets, stock LS3 intake, ID1650s, 90mm TB, T4 PT8847 billet wheel turbo, GZ Motorsports vacuum pump, e85, approx 8psi (750rwhp). T56 Magnum, McLeod RXT clutch, 3.31 gears out back in a solid 8.8" rear with Mustang style 4 link pickup points. I drove 100 miles to the track doing 80 and a handful of 3rd/4th accelleration blasts on the highway and still managed 18mpg. The small cam really drives well.
Last edited by gnx7; 11-29-2014 at 03:53 PM.
11-29-2014, 03:29 PM
#2
This lower graph shows 8psi and safe timing with the air filter on... 744/776
the middle is 13psi with air filter on. You can see how badly it chokes up once the turbo hits that boost setting. 962/993
The last graph is same boost setting with no air filter.... 1065/1055
I hope to run it at this setting once I get some M/T "S" sidewall tires. Non "S" tires were all over the damn place at the track.
the middle is 13psi with air filter on. You can see how badly it chokes up once the turbo hits that boost setting. 962/993
The last graph is same boost setting with no air filter.... 1065/1055
I hope to run it at this setting once I get some M/T "S" sidewall tires. Non "S" tires were all over the damn place at the track.
