10.31@137mph LS7 FD
Thread Starter
Joined: Mar 2001
Posts: 2,090
Likes: 26
From: San Francisco, CA
10.31@137mph LS7 FD
Differences from last time are having my buddies 275/35/18's up front (vs 315/30/18's) and we didn't overmix the e85/91 blend which was losing a little power up top last time.
My fuel pump (Supra Denso) is about maxed out shown in the Holley HP files. My injectors were compensating for it up top.
Mid/low 60's temps, tiny breeze later in the day, approx 500ft DA. Track prep was ok. I'm on 4+ year old Hoosier 275/40/17 Drag Radials which are pretty much toast. No front sway bar with road race alignment. Full stock interior. Stock Ohlins coilovers on full soft front.... full hard rear. Thru full single 3.5" exhaust with dual 3" Random Technology catalytic convertor Y pipe.
It would consistently gain 26-27mph in the back half. I have a big road race front splitter on up front which is PITA to remove so I left it on. That isn't helping aero and neither are the Ronin flared front fenders and Pettit rear flares.
Next time out I'll be on a 15" rim with new ET Streets and front skinnies and put on a stock FD bumper with no lip to see if I can run a 9 second pass with cats on the car.
Best et and mph of the day is this slip:
60ft 1.6693
330 4.4296
660 6.7130@ 110.78 mph
1320 10.316@136.88 mph
The video:
My fuel pump (Supra Denso) is about maxed out shown in the Holley HP files. My injectors were compensating for it up top.
Mid/low 60's temps, tiny breeze later in the day, approx 500ft DA. Track prep was ok. I'm on 4+ year old Hoosier 275/40/17 Drag Radials which are pretty much toast. No front sway bar with road race alignment. Full stock interior. Stock Ohlins coilovers on full soft front.... full hard rear. Thru full single 3.5" exhaust with dual 3" Random Technology catalytic convertor Y pipe.
It would consistently gain 26-27mph in the back half. I have a big road race front splitter on up front which is PITA to remove so I left it on. That isn't helping aero and neither are the Ronin flared front fenders and Pettit rear flares.
Next time out I'll be on a 15" rim with new ET Streets and front skinnies and put on a stock FD bumper with no lip to see if I can run a 9 second pass with cats on the car.
Best et and mph of the day is this slip:
60ft 1.6693
330 4.4296
660 6.7130@ 110.78 mph
1320 10.316@136.88 mph
The video:
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Thread Starter
Joined: Mar 2001
Posts: 2,090
Likes: 26
From: San Francisco, CA
That initial video I posted up I missed 3rd gear. Doh
The car next to me was a GTR with bolt ons. It was running high 10's I believe.
So here is another one. I ran a 10.7x or something and bounced off 2nd gear rev limiter.
Just ordered up some Weld 17x4.5" Alumastar drag skinny fronts.
Should arrive in about a week.
Should help with aero and knock off another 30-40lbs off the front end.
Mounted up some new M/T ET Street 26x10.5x15 on Bogart 15x10" rims also.
Gotta take some stock rear calipers and have them milled to clear the rims.
The car next to me was a GTR with bolt ons. It was running high 10's I believe.
So here is another one. I ran a 10.7x or something and bounced off 2nd gear rev limiter.
Just ordered up some Weld 17x4.5" Alumastar drag skinny fronts.
Should arrive in about a week.
Should help with aero and knock off another 30-40lbs off the front end.
Mounted up some new M/T ET Street 26x10.5x15 on Bogart 15x10" rims also.
Gotta take some stock rear calipers and have them milled to clear the rims.
is that a Stock ls7? No turbo or juice? That is seriously impressive!! I'm trying to get my swap together right now. Just ordered all my parts for my ls2, I would be happy to hook up and get into the 11's!
Thread Starter
Joined: Mar 2001
Posts: 2,090
Likes: 26
From: San Francisco, CA
essentially stock LS7 running cam/headers/tune. Dual hi-performance Random Technology cats in place too!
the heads had minor exhaust porting done. But doing the intakes also is much better for more HP. Heads were done in late 2008 before any real CnC programs were out.
Current porting programs would add 40-50rwhp (3-4mph). A Fast102 intake would add another 20-30rwhp (1-2mph).
the heads had minor exhaust porting done. But doing the intakes also is much better for more HP. Heads were done in late 2008 before any real CnC programs were out.
Current porting programs would add 40-50rwhp (3-4mph). A Fast102 intake would add another 20-30rwhp (1-2mph).
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