New Mod installed - Nice gains
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
New Mod installed - Nice gains
The AS&M runners were installed this week. Today they were track tested. The only change was the runners.
The weather conditions were 65 degs, 30.30 baro, 50% humidity.
My current TPI combo is:
Accel base + AS&M runners + ported plenum + stock 48mm TB.
The best run was a 12.81 at 107.09 with a 1.73 60' time. This is .15 better than my last run , which was run under better weather conditions.
I also picked up about 1.5 - 2 mph.
Attached are some timeslips. The Vette is now solidly in the 12.8's.
Fuel pressure was 40-41 psi , Coolant temps were 165- 170 degs.
I would also like to thank 65Z01 for lending me his brand new AS&M runners. He never installed them and basically handed me the box.
All comments and questions welcomed.
Vic
The weather conditions were 65 degs, 30.30 baro, 50% humidity.
My current TPI combo is:
Accel base + AS&M runners + ported plenum + stock 48mm TB.
The best run was a 12.81 at 107.09 with a 1.73 60' time. This is .15 better than my last run , which was run under better weather conditions.
I also picked up about 1.5 - 2 mph.
Attached are some timeslips. The Vette is now solidly in the 12.8's.
Fuel pressure was 40-41 psi , Coolant temps were 165- 170 degs.
I would also like to thank 65Z01 for lending me his brand new AS&M runners. He never installed them and basically handed me the box.
All comments and questions welcomed.
Vic
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: New Mod installed - Nice gains (Vic'89)
First off Vic... :cheers:...and isn't that your best short time too.
I'm glad that intake combo got the job done for you.
Assuming you weighed in at 3280lbs, that computes to 311hp, normalized for weather!! Very nice indeed.
BTW, what was your trap speed on that 04/06/02 time slip with the 12.95sec ET?
I'm glad that intake combo got the job done for you.
Assuming you weighed in at 3280lbs, that computes to 311hp, normalized for weather!! Very nice indeed.
BTW, what was your trap speed on that 04/06/02 time slip with the 12.95sec ET?
Team Owner
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
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Re: New Mod installed - Nice gains (Vic'89)
:cheers:
Race Director
Joined: Aug 2000
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Re: New Mod installed - Nice gains (Vic'89)
Thats great news...so the results is the stock runners were holding you back eh?
I got to say your mods and times are exactly what GM shouldve sold the car off the showroom floor with.Nice to see that someone has gotten the L98 into the 12s with basically bolt on mods.
:D
I got to say your mods and times are exactly what GM shouldve sold the car off the showroom floor with.Nice to see that someone has gotten the L98 into the 12s with basically bolt on mods.
:D
Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Re: New Mod installed - Nice gains (Vic'89)
Vic, comparing today's Time Slips with some from last year, I gained 3 tenths with my new exhaust and another 1.5 mph.
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From: This vette goes to 11 Milford MA
St. Jude Donor '03-'05
Re: New Mod installed - Nice gains (robblk90)
That rocks!!!! That is the coolest thing about these old L98's, you can mod them to run 12's and still retain decent mileage and driveability. I am hoping to run high 12's with mine this season before I yank the motor.
Team Owner
Joined: Mar 2000
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From: Boston, MA
Assuming you weighed in at 3280lbs, that computes to 311hp, normalized for weather!! Very nice indeed.
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From: Granby, MA
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nice gains indeed!!!!
I am gonna test mine out in a couple of weeks....I too would love to get my L-98 into the 13's and 12's if possible....but I dont' have a ton of cash....so just gonna have to wait till I can....and learn too how to install and do everything that Vic and 65Z01 did.
Jeff
hoping for a 13.7 or better at the track....
[Modified by XtremeVette, 3:21 PM 5/12/2002]
Jeff
hoping for a 13.7 or better at the track....
[Modified by XtremeVette, 3:21 PM 5/12/2002]
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
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From: Long Island, NY
Re: New Mod installed - Nice gains (65Z01)
First off Vic... :cheers:...and isn't that your best short time too.
BTW, what was your trap speed on that 04/06/02 time slip with the 12.95sec ET?
BTW, what was your trap speed on that 04/06/02 time slip with the 12.95sec ET?
To answer some questions:
65Z01 -> Those were my best 60' times, so NO lose of bottom end torque. The best run from 4/6 was 12.96 at 105.xx, the other runs were 12.97-13.03.
My car only ran a 12.85 once before in 45 deg weather with a very high baro. The rest of the runs were 12.93 and above.
Yesterday I was in the low 12.8's all day. MPH was 106.xx to 107 all day
Bills86coupe -> The base without the runners didn't give me any gain.
Robblk90 -> They are the AS&M long tube runners, not the siamesed runners.
Nucking Futs -> I have stock 22lbs injectors, they have 74K miles on them. I also run 40-41.5 psi ont he fuel pressure with the vacuum hose disconnected.
Also, my shift points are not perfect yet. The 1-2 shift was at 4400rpms and the 2-3 shift was at 4900 rpms. I was messing with the governor during the week and I didn't set the shift points correctly.
Vic
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From: SE NY
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Re: New Mod installed - Nice gains (Vic'89)
Vic, taking that prior as a 105.5mph it computes to a 12hp gain, normalized for weather.
From your trap speeds it looks like you have another tenth of so in there. Maybe upping the shifts to 5k will do the job.
You're realy making these L98s look great and you still have heads (25hp), headers (20hp) and 1.5RRs (15hp) to go. Looks like you can be at 370hp without even doing a cam! You're definitely going into the low 12s in the future.
From your trap speeds it looks like you have another tenth of so in there. Maybe upping the shifts to 5k will do the job.
You're realy making these L98s look great and you still have heads (25hp), headers (20hp) and 1.5RRs (15hp) to go. Looks like you can be at 370hp without even doing a cam! You're definitely going into the low 12s in the future.
Team Owner
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From: SE NY
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Re: (scorp508)
Scorp, you may be right though 1.6s with the stock cam takes it pretty close to the ZZ-9, except for LSA. Even if he picks up another 50hp without the cam it would put him over 111mph and into the low 12s, assuming it still hooks.
I'm sending you the mods results data I'm basing my HP estimates from.
I'm sending you the mods results data I'm basing my HP estimates from.