LS1 & LS6 Differences?
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 7,157
Likes: 154
From: The Arid Sunny Desert
LS1 & LS6 Differences?
As far as the bottom end goes is there a difference between the two? For example take my '99 bottom end....is it different than an '01-04 LS6 bottom end? I know that neither run forged internals but I was wondering if one motor takes to being boosted better than another or can handle more NA horsepower than the other. I believe that the LS6 runs a higher compression making the LS1 more boost friendly but other than that and the better flowing LS6 heads and hotter cam what exactly are the differences?
Melting Slicks
Joined: Sep 2006
Posts: 2,041
Likes: 4
From: Rockford Illinois
As far as the bottom end goes is there a difference between the two? For example take my '99 bottom end....is it different than an '01-04 LS6 bottom end? I know that neither run forged internals but I was wondering if one motor takes to being boosted better than another or can handle more NA horsepower than the other. I believe that the LS6 runs a higher compression making the LS1 more boost friendly but other than that and the better flowing LS6 heads and hotter cam what exactly are the differences?
Burning Brakes
Joined: Nov 2006
Posts: 1,071
Likes: 0
From: Goose Creek SC
Anybody else feel free to add anything i missed or give a better explanation of the oil relief windows.
Hammer
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Displacement is the same on LS1 & LS6.
Try these articles for some detailed info.
http://www.idavette.net/hib/ls6/index.htm
http://www.idavette.net/hib/02ls6/index.htm
Try these articles for some detailed info.
http://www.idavette.net/hib/ls6/index.htm
http://www.idavette.net/hib/02ls6/index.htm
Drifting
Joined: Nov 2003
Posts: 1,539
Likes: 3
From: South al
the 97-98 blocks have a shallow oil transfer galley @ the rear of the block that limits equal flow of oil to the main lifter oil galleys. Pre 01 blocks have a hole machined through the main webs to improve bay to bay oil -vapor pumping issues, there is a diffrence in the material of the piston used in the Ls1 & the Ls6 both are lightweight,flat top eutectic cast aluminum .The original Ls1 pistons are made by mahle using an aluminum/silicon alloy called m124 Ls6 pistons are made of M142, which has a higher copper & nickel content .M142 is stronger & exhibiits reduced expansion @ high temps than m124..This also helped gen 3 team use tighter bore clearnces to minimize oil consumption & piston noise while maximizing durability.Ls6 02 & beyond have light weight hollow stem valves .the exhaust valve is packed with a sodium -potasssium mix to help it remain cool.The 02 & later Ls6 valves are 0.6 mm longer than the previous ,to compensate for changes to the 02 Ls6 camshaft base circle.Ls1 97-98 duration @ 50 - [I][FONT="Arial Black"]199/207[] Valve lift / 0.472int /0.479exh / .LSA117 .Small baby cams 00/camshaft spec198/209 valve lift [ inch] intake/exh0.500 /0.500 Lsa 115.5 . 01 -03 duration, int/exh/ 198/207 valve lift, 0.467/0.479 116 lsa .Ls6 01 385 hp 204/211 int/exh int/exh 0.525/0.525 116 lsa 02 -04 Ls6 204/218 0.555/0.551 exh Lsa 117.5 .Here are a couple more gm performance cams. hot cam -219/228 int/exh valve lift [/B]0.525/0.525 Lsa 112 Asa camshaft -] 226/236 0.525/0.525 110 Lsa
Last edited by fsuforever; Jan 9, 2007 at 10:15 AM.
