760rwhp 777rwtq
Thread Starter
FormerVendor
Joined: Dec 2001
Posts: 2,444
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From: WWW.SPEEDINC.COM
PSJ- The car is still very quiet with the 4in exhaust. The turbo is still louder than the exhaust actually.
I dynoed it on a mix of 110 and 93. Probably 70% 110.
Mightymouse- I ran 11lbs of boost on 93 octane many times over the summer with the same tune. So, I would say over 600rwhp on 93 is definitely possible.
I'm sure the turbo is capable of more airflow, I just don't feel comfortable running 25+ psi boost. I'm not really sure of the hp limit of the turbo itself.
I dynoed it on a mix of 110 and 93. Probably 70% 110.
Mightymouse- I ran 11lbs of boost on 93 octane many times over the summer with the same tune. So, I would say over 600rwhp on 93 is definitely possible.
I'm sure the turbo is capable of more airflow, I just don't feel comfortable running 25+ psi boost. I'm not really sure of the hp limit of the turbo itself.
TECH Fanatic
Joined: Mar 2002
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Originally Posted by Rob Raymer
Nice numbers! Any plans on turning the boost up a little more??
Kinda funny that with both of us at 11lbs of boost we make nearly identical HP.
Kinda funny that with both of us at 11lbs of boost we make nearly identical HP.
I guess I wish I had an LT1-style engine again...
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Originally Posted by SS00Blue
Excellent results on an LT1/4. Too bad your shop doesn't have the experience, or knowledge, to make an LS1/6 make the same bones. Maybe some other shop can do that....
I guess I wish I had an LT1-style engine again...
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I guess I wish I had an LT1-style engine again...
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Originally Posted by SS00Blue
Excellent results on an LT1/4. Too bad your shop doesn't have the experience, or knowledge, to make an LS1/6 make the same bones. Maybe some other shop can do that....
I guess I wish I had an LT1-style engine again...
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I guess I wish I had an LT1-style engine again...
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For your information LS1's are limited by the head bolt design to make big power.
Get a clue before you post.
Speed Inc has great customer service too.
Intimid8
I too am running a single turbo kit, however it is on an '03 Z06. At 12 psi, I make 580/580 on 93 octane...what octane are you running/compression at 11 psi and 19 psi? Very impressive results btw.
I too am running a single turbo kit, however it is on an '03 Z06. At 12 psi, I make 580/580 on 93 octane...what octane are you running/compression at 11 psi and 19 psi? Very impressive results btw.
Originally Posted by Excal
what exactly in the "head bolt" design limits the? is this the same with the LS6?
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Originally Posted by maddboost
Guys running alot of boost seem to "Lift" the heads. Not sure how thats attributed to the bolt design but its what ive heard.
TECH Enthusiast
Joined: Mar 2003
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From: PA
well i guess, but supras and rx-7s lift heads too so unless it's a constant problem...
Then again there should be a 1000fwhp ls1 out there by now.
Kinda disheartening to hear the lt-1 has an advantage on the ls1 like that..maybe the ls1 is just a N20 motor and BIG power with FI is just an uphill battle..we already get screwed with prices and kits compared to stangs.
Then again there should be a 1000fwhp ls1 out there by now.
Kinda disheartening to hear the lt-1 has an advantage on the ls1 like that..maybe the ls1 is just a N20 motor and BIG power with FI is just an uphill battle..we already get screwed with prices and kits compared to stangs.
Originally Posted by sscam68
madboost and Got me SOM
He is being scarcastic and he is quoting R. Raymers post. His comments aren't directed towards INTMD8.
He is being scarcastic and he is quoting R. Raymers post. His comments aren't directed towards INTMD8.
I think SSblue has a QMP kit and was making a joke to Rob Raymer.
Intmd8 is your peak dropping or is it the same? When you putting the 2.73's in?
Also, I should revise my cam comment, how about 235/235 how much overlap would that have?
Intmd8 is your peak dropping or is it the same? When you putting the 2.73's in?
Also, I should revise my cam comment, how about 235/235 how much overlap would that have?
I ruin the end of films...
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Joined: Nov 2002
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From: Taking back some video tapes
Originally Posted by Excal
well i guess, but supras and rx-7s lift heads too so unless it's a constant problem...
Then again there should be a 1000fwhp ls1 out there by now.
Kinda disheartening to hear the lt-1 has an advantage on the ls1 like that..maybe the ls1 is just a N20 motor and BIG power with FI is just an uphill battle..we already get screwed with prices and kits compared to stangs.
Then again there should be a 1000fwhp ls1 out there by now.
Kinda disheartening to hear the lt-1 has an advantage on the ls1 like that..maybe the ls1 is just a N20 motor and BIG power with FI is just an uphill battle..we already get screwed with prices and kits compared to stangs.
Ronnie Duke's droptop makes well over 1K hp. I can only think of 2 LTx motors that have made 1000+ hp (Madman's Firebird & Baxter's SS).
Good numbers Jim. Ever thought of trying to get a number w/ a straight exhuast (no muffler, short downpipe)? With the size of the turbo, I don't think it'd be that loud.
I know Jim has dynoed an open downpipe before. He's tried a lot of different things, he's the most creative 4th gen turbo guy I see on the web as far as trying things go.
Z8's has gone 159mph with a 3400 lb raceweight I'm thinking that's like 1100 crank hp (96 LT1 383ci hydraulic)
I think we will see non-C5R headed 1000 crank hp LS1 setups this year.
Z8's has gone 159mph with a 3400 lb raceweight I'm thinking that's like 1100 crank hp (96 LT1 383ci hydraulic)
I think we will see non-C5R headed 1000 crank hp LS1 setups this year.
I ruin the end of films...
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From: Taking back some video tapes
Originally Posted by Pro Stock John
I know Jim has dynoed an open downpipe before. He's tried a lot of different things, he's the most creative 4th gen turbo guy I see on the web as far as trying things go.
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Joined: Oct 2002
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From: Aurora IL
congrats on the numbers Jim!!!! Hermez will be running this spring to keep you company against all the LSx's out here.... I have thought many times on boosting and you keep me thinking about it more and more...