11 sec LT4???
Thread Starter
Cruising
Joined: Jul 2006
Posts: 14
Likes: 0
From: chino hills ca
11 sec LT4???
ok, so i am looking at buying a lt4 vette. i am coming out of a 03 cobra with 460rwhp that does high 11's.
what would be needed to get the same performance out of an lt4? i am more concerned with having a 11 sec car than the dyno numbers.
is it even possible on stock bottem end?
what would be needed to get the same performance out of an lt4? i am more concerned with having a 11 sec car than the dyno numbers.
is it even possible on stock bottem end?
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Very possible. The question is, for how long? I wouldn't build anything that stout w/o putting the 'right stuff' in as a foundation. I have this little quirk, I like my engines to last. And they do.
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Heads/cam, headers, 4.10 gears, good tune, sticky tires, and a strong clutch will get you there.
With, 355 rwhp my heads/cam stock bottom end LT1 was running 12.3x's @ 115-116mph, and that was with a crappy 1.90 60'. Now with 20 more rwhp and better traction, I'm hoping for high 11's.
Oh, I know the power of those supercharged Fords, I have a 2001 Lightning.
With, 355 rwhp my heads/cam stock bottom end LT1 was running 12.3x's @ 115-116mph, and that was with a crappy 1.90 60'. Now with 20 more rwhp and better traction, I'm hoping for high 11's.
Oh, I know the power of those supercharged Fords, I have a 2001 Lightning.
Melting Slicks
Joined: Jul 2004
Posts: 2,695
Likes: 0
From: Chicago Illinois
I think ported heads/intake, aggressive cam and 4.10 gears, headers and stickey tires you can be there. Im running mid 12s with LT1 vette with ported heads, intake, emmissions freindly cam, headers, 3.73, 2400stall. Im struggling with traction consistantly getting 1.9 60' times. Its is doable!
Instructor
Joined: Dec 2004
Posts: 168
Likes: 0
From: Charlottesville VA
The tuner that I have been talking to about implementing a few more mods on my new to me LT4 seems to think that with the nitrous setup that he is recommending that the car will be capable of breaking into the 10's in the quarter on spray (with a strong clutch) and that it will run steady in the 11's as it sits. Longevity is a concern of mine, but he is assuring me that with the right kit and accessories that it will do the trick and actually complement the compression where forced induction would really be dangerous and almost counterproductive at least on the stock bottom end. If he is wrong, well, then I have a reason to put together a nasty shortblock I guess, hehe.
Course all that is pure speculation till I get to the track and it runs some numbers, but I can assure you that it is a hell of a lot of fun to drive regardless.
Course all that is pure speculation till I get to the track and it runs some numbers, but I can assure you that it is a hell of a lot of fun to drive regardless.
Last edited by Idburnu; Jul 7, 2006 at 07:36 PM.
Instructor
Joined: Sep 2005
Posts: 156
Likes: 4
From: Plainfield IL
I have run 11.96 @ 118 mph, in my lt4, its a 383 with, with ported lt4 heads, intake, long tubes, 58mm tb, centerforce clutch, 3 inch exhaust all the way back, .570 lift cam. Traction is an issue though. It has gone 10.8's on a 200 shot too!!!!!!
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Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Without going into the bottom end you could switch heads to something like trickflow to lower compression and then add a blower such as vortech. Otherwise its going to be hard to compete with the modified 03 cobra on power. Your 460rwhp probably put you well into the 11's on street tires and ill bet with trap speeds above 120 mph.
Instructor
Joined: Dec 2005
Posts: 178
Likes: 0
I dont have much as far as motors but as you I have just switched from a 03 Cobra to a L98 car. I may not be able to do 11s anymore but man the car just feels stuck to the road so much better then the Cobra.
You might not be able to match the Cobra at the same PFP(price for power) ratio but, the second you drive it you will be stuck in it.
You might not be able to match the Cobra at the same PFP(price for power) ratio but, the second you drive it you will be stuck in it.
Thread Starter
Cruising
Joined: Jul 2006
Posts: 14
Likes: 0
From: chino hills ca
Originally Posted by pipeliner1
I dont have much as far as motors but as you I have just switched from a 03 Cobra to a L98 car. I may not be able to do 11s anymore but man the car just feels stuck to the road so much better then the Cobra.
You might not be able to match the Cobra at the same PFP(price for power) ratio but, the second you drive it you will be stuck in it.
You might not be able to match the Cobra at the same PFP(price for power) ratio but, the second you drive it you will be stuck in it.
funny thing is before i bought my cobra, i had a 86 vette, l98. i really do miss the handling of it. but if i could get the handling and the power, then im happy
Team Owner
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Originally Posted by going for broke
funny thing is before i bought my cobra, i had a 86 vette, l98. i really do miss the handling of it. but if i could get the handling and the power, then im happy
Thread Starter
Cruising
Joined: Jul 2006
Posts: 14
Likes: 0
From: chino hills ca
Originally Posted by comp
no info ?????
im not sure if you ment no info on my profile, or no info on the cars, so i will give you both
i just filled in some of the profile, so check it out if you want to
as for the cars, it was a stock 86 red with flowmasters(i consider that stock) it was a dirty car with 105k i got for 5g's
i got a jod selling cars and bought my cobra, did pully exhaust intake and tune to get 460rwhp and 470 rwtq, and runs high 11's, no slicks
i just want to save some of the money now so i am looking for another vette
Le Mans Master
Joined: Aug 1999
Posts: 7,337
Likes: 137
From: WilkesBarre PA
Originally Posted by TM-96CE
Forum member RichS ran 11.8@118 with ported LT4 heads, LT4 hotcam, exhaust, 4.10 gears (I think) and tuning. I think his car dyno'd in the 370rwhp range
My buddys looking for a 03 Cobra if he sells his 96GT. His brother has a 99 (I think). I thought about getting one, but needed a truck so I bought a Lightning. Nice looking cars.
Last edited by RichS; Jul 8, 2006 at 09:35 AM.
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
[QUOTE=RichS]All on the original stock bottom end.
QUOTE]
What about the drivetrain??? Clutch, rear end, universals, half-shafts, etc. ????
I would think high 11's would start breaking things real quick.....
I am trying to decide how hard I can hit mine now that I have drag radials that actually hook.....so far color me chicken.....my drive train is stock except for the 4.10 gears..
QUOTE]
What about the drivetrain??? Clutch, rear end, universals, half-shafts, etc. ????
I would think high 11's would start breaking things real quick.....
I am trying to decide how hard I can hit mine now that I have drag radials that actually hook.....so far color me chicken.....my drive train is stock except for the 4.10 gears..
Le Mans Master
Joined: Aug 1999
Posts: 7,337
Likes: 137
From: WilkesBarre PA
Originally Posted by LT4BUD
What about the drivetrain??? Clutch, rear end, universals, half-shafts, etc. ????
I would think high 11's would start breaking things real quick.....
I am trying to decide how hard I can hit mine now that I have drag radials that actually hook.....so far color me chicken.....my drive train is stock except for the 4.10 gears..
I would think high 11's would start breaking things real quick.....
I am trying to decide how hard I can hit mine now that I have drag radials that actually hook.....so far color me chicken.....my drive train is stock except for the 4.10 gears..
Before the 396 the car was much more reliable racing. But ya got to pay to play 
