[Z06] LS6 v LT5 question
Le Mans Master
Joined: Nov 2000
Posts: 8,277
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From: pa
Re: LS6 v LT5 question (Nat04Z06)
For around $8000 you can add 150 to 200 full time horsepower to the LS6 with a supercharger. Doesn't it cost roughly half that just to change cams in an LT5? The LS6 is much cheaper to go fast. The LT5 is one of the most exotic looking engines ever produced anywhere. I don't think I'd want to screw one up by changing it too much anyway.
What do the non-turbo 427's on a normal tune for the street dyno at?
edit. For $9600 a stock CID car will dyno at about 430 hp at the wheels which is about 505 at the crank. This is on the stock cams, ported heads, ported plenum, injector housings, new flywheel, headers, exhaust and tune. . After talking with Mark he thinks that the price for his package maybe coming down now that the heads can be CNCed instead of hand ported
[Modified by 90 Corvette ZR-1, 10:52 PM 6/10/2004]
Race Director
Joined: Mar 2001
Posts: 14,480
Likes: 132
From: PA
Re: LS6 v LT5 question (jimmy2004)
has anyone ever switched motors: put an LS6 in a ZR-1 or LT5 in a ZO6?
Team Owner
Joined: Oct 2000
Posts: 29,937
Likes: 22
St. Jude Donor '03-'04
Cruise-In 1-2-3-4-5 Veteran
Re: LS6 v LT5 question (Nat04Z06)
I don't think I've heard of anyone doing this. Man that would be cool opening the hood of a Z06 and seeing an LT5 under there! Then again, an LT5 would look cool in any car.
Melting Slicks
Joined: Apr 2002
Posts: 3,159
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From: Hail 2 Da Victorz!
Re: LS6 v LT5 question (90 Corvette ZR-1)
That is tuned for pump gas and everything?
http://www.motorsporttech.com/z07.asp
AP Engineering just finished a mild 427 that laid down 451 rwhp on a Mustang Dyno.
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Melting Slicks
Joined: Apr 2002
Posts: 3,159
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From: Hail 2 Da Victorz!
Re: LS6 v LT5 question (90 Corvette ZR-1)
Wow only 550 hp? Im a little disapointed.
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
Re: LS6 v LT5 question (DoctorV8)
Much more bang for the buck, but the lacking the effortless RPM capability of an LT5. Certainly a solid roller setup could rev to 7500 rpm, but it won't be as streetable.
BTW, what 427 LT5 are you referring to? From what I can gather, a 427 LT5 is basically undoable unless you've got money to burn:
http://www.lt5registry.net/forums/vi...um=8&Topic=176
[Modified by nuke61, 3:27 AM 6/12/2004]
Melting Slicks
Joined: May 2000
Posts: 2,751
Likes: 81
From: Houston TX
Re: LS6 v LT5 question (nuke61)
I agreed with everthing you said in this post except the part where you say that a sold roller set up to rev to 7500 rpm wouldn't be as streetable. Solid rollers "seem" smaller to the motor.
And we haven't even discussed having to adjust valve lash on a solid roller motor!
Sanjay
[Modified by DoctorV8, 9:37 PM 6/11/2004]
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
Re: LS6 v LT5 question (DoctorV8)
True, but you need a radical grind to make the kind of power we're talking about.
Yes, I know that a 427 LT5 has been done, but is it readily available... or do you have to have gobs of cash and find the only place in the U.S. that does it?
Le Mans Master
Joined: Aug 2000
Posts: 7,760
Likes: 0
From: Lost in the mountains of TN
Re: LS6 v LT5 question (nuke61)
If I took a LT5 to LPE it would cost (per the website) $33,900 for a 415ci 610bhp motor.
If I took a LS6 to LPE I could get a 427ci with 550bhp for $7000 less or TT 650bhp for $7000 more.
So it all reality the costs are very close.
If I took a LS6 to LPE I could get a 427ci with 550bhp for $7000 less or TT 650bhp for $7000 more.
So it all reality the costs are very close.
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
Re: LS6 v LT5 question (BiZ)
Sure, IF you used LPE on both counts. However, MTI Motorsports does a 427 for $18K, so this brings up the question again... there are many places that will do a 400+ bore/stroke LS1/6, but where can you get the same thing for an LT5?
Le Mans Master
Joined: Nov 2000
Posts: 8,277
Likes: 0
From: pa
Re: LS6 v LT5 question (nuke61)
there are many places that will do a 400+ bore/stroke LS1/6, but where can you get the same thing for an LT5?
Edit: you don't have to bore/stroke the LT5 to get 400 at the wheels
[Modified by 90 Corvette ZR-1, 9:41 AM 6/12/2004]
Le Mans Master
Joined: Aug 2000
Posts: 7,760
Likes: 0
From: Lost in the mountains of TN
Re: LS6 v LT5 question (nuke61)
Sure, IF you used LPE on both counts. However, MTI Motorsports does a 427 for $18K, so this brings up the question again... there are many places that will do a 400+ bore/stroke LS1/6, but where can you get the same thing for an LT5?