LS1 increased displacement
Thread Starter
Burning Brakes
Joined: Sep 2001
Posts: 1,173
Likes: 1
From: Aguila AZ
LS1 increased displacement
I'm looking to add cubic inches... Anyone willing to describe the technical details on the re-sleeve process on the LS1 aluminum block? What is the maximum bore size attainable and still maintain reasonable reliablity? What is the maximum overbore on a 6.0L (LS1 style) cast iron block? Do either or both blocks utilize siamezed cylinders? I would like to create a 427 CID LS1 with 4.125 bore X 4.00 stroke... Any comments?
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Re: LS1 increased displacement (MrEracer)
I read an article in Car & Driver a few years back about the Lingenfelter 450HP C5 that mentioned the LS1's cylinder walls are too thin to overbore. I believe Lingenfelter obtained 370 cu in by increasing the stroke, but am not positive of this.
Instructor
Joined: May 2001
Posts: 204
Likes: 0
From: Ridgetop TN
Re: LS1 increased displacement (MrEracer)
This is Lingenfelter's 427 which is the LS1 bored and stroked.
http://www.corvettemagazine.com/2001/may/427/427p1.ASP
http://www.corvettemagazine.com/2001/may/427/427p1.ASP
Racer
Joined: Aug 2001
Posts: 270
Likes: 0
From: Crown Point IN
Re: LS1 increased displacement (RedLandRocket)
Agostino racing has a 432 that they made. They put it in a costumers 99 WS6. 480 HP and a little less torque. Not a lot but a 200 shot put the 3500# car at a 9.51 with a 350 turbo trans with a non locking converter. Guess you cant argue with that.
:yesnod: :yesnod: :yesnod:
[Modified by Allgonoshow, 9:50 PM 9/12/2001]
:yesnod: :yesnod: :yesnod:
[Modified by Allgonoshow, 9:50 PM 9/12/2001]
Melting Slicks
Joined: Aug 1999
Posts: 2,540
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From: Milwaukee WI
LS1Edit Guru
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Re: LS1 increased displacement
There are numerous displacements available for the LS1/LS6. You can generally bore the existing sleeves a small amount but anything more than a small amount requires a re-sleeve. Popular bore sizes range from the stock 3.900 to 4.000, 4.080, 4.100, and 4.125. Stroker cranks range from 4.000, 4.080, and 4.125 inches. Given the numerous combinations of bore and stroke, you can generate an engine from 382 to about 438 cubic inches. Also, there are several combinations that yield the same size displacement, for instance the 427 can be acheived with either a 4.080x4.080 setup or alternately by a 4.125x4.000 (428)..
Lots of choices.. depends whether you like a stroked motor, an all bore motor, or a super stroker (bore and stroke). MTI, ARE, DRM, LFE, MMS, and numerous others are making lots of options available to us C5'rs....
Good luck in your search.
Lots of choices.. depends whether you like a stroked motor, an all bore motor, or a super stroker (bore and stroke). MTI, ARE, DRM, LFE, MMS, and numerous others are making lots of options available to us C5'rs....
Good luck in your search.
