Question for the LT-4 guys?
Thread Starter
Race Director
Joined: May 2003
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Question for the LT-4 guys?
Just a few question for you guys, Hope to hear some good answers.
1) What did your LT-4 run stock, and what did it run with a few mods?
2) What does it take to get a LT-4 into the deep 12's @116-118?
3) How does your LT-4(stock) do vs C5(stock)?
Thanks.
1) What did your LT-4 run stock, and what did it run with a few mods?
2) What does it take to get a LT-4 into the deep 12's @116-118?
3) How does your LT-4(stock) do vs C5(stock)?
Thanks.
Le Mans Master
Joined: Jul 2000
Posts: 5,012
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From: OKC OK
Originally Posted by 88BlackZ-51
Just a few question for you guys, Hope to hear some good answers.
1) What did your LT-4 run stock, and what did it run with a few mods?
2) What does it take to get a LT-4 into the deep 12's @116-118?
3) How does your LT-4(stock) do vs C5(stock)?
Thanks.
1) What did your LT-4 run stock, and what did it run with a few mods?
2) What does it take to get a LT-4 into the deep 12's @116-118?
3) How does your LT-4(stock) do vs C5(stock)?
Thanks.
2) Depending in the track conditions & driver, I'd think around 380-390rwhp.
3) Stock to stock...I ran side-by-side w/ several LS1s at the track and on the street.
Last edited by LT4POWR; Jan 6, 2006 at 08:50 AM.
Thread Starter
Race Director
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Originally Posted by LT4POWR
1) Usually mid - low 13's at 106-109mph...crappy hot Oklahoma track, old hard GSC tires. With mufflers, k&n filter, open filter lid, ngk spark plugs, msd wires...I went 13.00 @ 110mph.
2) Depending in the track conditions & driver, I'd think around 380-390rwhp.
3) Stock to stock...I ran side-by-side w/ several LS1s at the track and on the street.
2) Depending in the track conditions & driver, I'd think around 380-390rwhp.
3) Stock to stock...I ran side-by-side w/ several LS1s at the track and on the street.
thanks for the reply. 110 mph is cooking for close to stock.
now to get 380-390 rwhp, what would that take? would porting the heads,mild cam,tune, and exhaust get u there?
sounds like LS1 are neck, and neck. good to know.
Last edited by 88BlackZ-51; Jan 6, 2006 at 10:04 AM.
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
Originally Posted by 88BlackZ-51
now to get 380-390 rwhp, what would that take? what porting the heads,mild cam,tune, and exhaust get u there?
Heads, cam, exhaust, and all the "good" bolt-ons. The final hp/tq numbers will depend on how well the heads are done, cam profile, tune quality, and alot of other little variables.
Thread Starter
Race Director
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Originally Posted by LT4POWR
Heads, cam, exhaust, and all the "good" bolt-ons. The final hp/tq numbers will depend on how well the heads are done, cam profile, tune quality, and alot of other little variables.Do you know the exact differences or have a link to the differences between the LT-1 and the LT-4?
Thanks.
btw, u have 41x rwhp? pretty sweet for a 350.
Racer
Joined: Apr 2004
Posts: 487
Likes: 0
From: Huntsville AL
http://www.grandsportregistry.com/lt1vslt4.htm
http://www.fierolt1.com/lt1_vs_lt4_2.htm
I believe low 12s is easily possible with some nittos and 350rwhp at a good track. I'm getting 12.5s with 290rwhp.
http://www.fierolt1.com/lt1_vs_lt4_2.htm
I believe low 12s is easily possible with some nittos and 350rwhp at a good track. I'm getting 12.5s with 290rwhp.
Race Director
Joined: Dec 2002
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by Wildcat1
I'm getting 12.5s with 290rwhp.
that's some good air or a short track.
Or you can drive like a pro....
As far as the first post is concerned, all I can add is that a buddy and I dyno'd our cars on the same morning/same facility. He had a stock LS1 and developed 316rwhp. My stock LT4 developed 311. Both MN6. That tells me that a stock LT4 and a stock LS1 C5 are pretty evenly matched. The drivers? Well, YRMV.
Larry
code5coupe
Last edited by rocco16; Jan 6, 2006 at 11:08 AM.
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Thread Starter
Race Director
Joined: May 2003
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Originally Posted by cuisinartvette
You could have put your H/C/MR on by now.
We grant you permission, and it will be fast.
-C4 gen
We grant you permission, and it will be fast.
-C4 gen
u must search for my threads?
i have a good reason why i am not.
just asking about the LT-4. dont know alot about them.
and thanks for the links above, those were helpful.
see you in may at the cruisin cuisin.......
Racer
Joined: Apr 2004
Posts: 487
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From: Huntsville AL
Well, rocco, it was actually done before the latest tune. It was done in very cold air two decembers in a row at Steele, AL with a 1.8 60 ft.
All I can say is I've seen an LT-4 vette run a best of 8.9 at my local 8th mile strip. I know for a fact he was not launching the car properly. My first ever pass after getting "tips" from him was a 8.8. On my second ever pass, I through his tips in the garbage and ran a 8.6 After that, 8.5s were easy. Then the mods started.
I'm guessing maybe it was a combination of all three reasonings you posted.
All I can say is I've seen an LT-4 vette run a best of 8.9 at my local 8th mile strip. I know for a fact he was not launching the car properly. My first ever pass after getting "tips" from him was a 8.8. On my second ever pass, I through his tips in the garbage and ran a 8.6 After that, 8.5s were easy. Then the mods started.
I'm guessing maybe it was a combination of all three reasonings you posted.
Race Director
Joined: Feb 2003
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
My LT-4 stock would run 13.0s at 108ish.
I had a CAI and Magnaflow mufflers and eventually got it in the 12.90s, but the MPS was still in the 108 range. The ET gain was mostly getting familiar with racing a 6-speed.
Best time on regular street tires was 12.92 (8.38 in the 1/8).
I had a CAI and Magnaflow mufflers and eventually got it in the 12.90s, but the MPS was still in the 108 range. The ET gain was mostly getting familiar with racing a 6-speed.
Best time on regular street tires was 12.92 (8.38 in the 1/8).
Thread Starter
Race Director
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Originally Posted by LT-4 CE
My LT-4 stock would run 13.0s at 108ish.
I had a CAI and Magnaflow mufflers and eventually got it in the 12.90s, but the MPS was still in the 108 range. The ET gain was mostly getting familiar with racing a 6-speed.
Best time on regular street tires was 12.92 (8.38 in the 1/8).
I had a CAI and Magnaflow mufflers and eventually got it in the 12.90s, but the MPS was still in the 108 range. The ET gain was mostly getting familiar with racing a 6-speed.
Best time on regular street tires was 12.92 (8.38 in the 1/8).
sounds like stock LT-4's hang with stock LS-1's. i bet if i posted this on the C5 forum, i would get flamed.
really good to see.......
Race Director
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From: Everyday you must choose between the pain of discipline and the pain of regret. Fredericktown, OH
Originally Posted by 88BlackZ-51
sounds like stock LT-4's hang with stock LS-1's. i bet if i posted this on the C5 forum, i would get flamed.
really good to see.......
really good to see.......
Le Mans Master
Joined: May 2000
Posts: 7,033
Likes: 12
Originally Posted by 88BlackZ-51
u must search for my threads?
i have a good reason why i am not.
just asking about the LT-4. dont know alot about them.
see you in may at the cruisin cuisin.......
i have a good reason why i am not.
just asking about the LT-4. dont know alot about them.
see you in may at the cruisin cuisin.......
I've read your threads, if you'd put those parts on you have you'd be faster than a ZR1, LT4 and Z06. Keep what you got and put the parts on. In the long run your wallet will be a lot heavier.
Thread Starter
Race Director
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Originally Posted by hippy
I've read your threads, if you'd put those parts on you have you'd be faster than a ZR1, LT4 and Z06. Keep what you got and put the parts on. In the long run your wallet will be a lot heavier.
your prob right....but my car wont be worth much after i screw with the factory motor.
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Originally Posted by 88BlackZ-51
your prob right....but my car wont be worth much after i screw with the factory motor.
Le Mans Master
Joined: May 2000
Posts: 7,033
Likes: 12
Originally Posted by 88BlackZ-51
your prob right....but my car wont be worth much after i screw with the factory motor.
It isn't going to be worth sht either way, fking enjoy it. You'll be dead b4 you know it.
I ripped a 1 of 30 Indy car apart so I could have fun with it.
Did you buy the POS to make money or have fun? Put the fking parts on.
I'm not kidding, put the gdamn parts on the car and see how you like it. You probably won't look anymore.
Pro
Joined: Nov 2005
Posts: 536
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From: Bardstown Kentucky
Originally Posted by 88BlackZ-51
Do you know the exact differences or have a link to the differences between the LT-1 and the LT-4?
Thanks.
btw, u have 41x rwhp? pretty sweet for a 350.
Thanks.
btw, u have 41x rwhp? pretty sweet for a 350.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Originally Posted by 88BlackZ-51
now to get 380-390 rwhp, what would that take? would porting the heads,mild cam,tune, and exhaust get u there?
sounds like LS1 are neck, and neck. good to know.
sounds like LS1 are neck, and neck. good to know.
If you spend whatever say 18k (approx. or more) to get a good LT4/LT5, you would still have to spend to get that rwhp, w/same money in yours you can get stupid fast, price out an entire drivetrain 396/406, trans, rear end. I am sure if the $$$ are right, some of these guys right here on the forum (j.burnett, corkvette etc.) that are going real fast would sell you a motor, that would be able to produce well past 380 at the tire.