LS3 startup with open headers
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Yes that is what I'm hoping for. On Katechs website their cam is 224/236 @.050 and the LS3 produced around 525 HP at 6400 rpm. Torque was at 480 ft/lbs and was over 450 ft/lbs from 4200 to 6200 rpm. I thought that was a pretty good starting point. If I'm close to that I will be happy. Should still be very drive able also.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
You read on the Internet forum about all these guys installing big cams in stock motors.....one thing to consider the Vette LS3 isn't variable valve timing, the VVT motors have pistons with valve reliefs in them, Vette motors do not....
Last edited by Solid LT1; Jan 6, 2014 at 10:32 AM.
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
You have the cam in the motor? I was installing a 228/236 .588/613 113lobe separation cam and found I only had 0.040" exhaust to piston clearance. Nothing a tear down and piston/rod replacement couldn't solve
You read on the Internet forum about all these guys installing big cams in stock motors.....one thing to consider the Vette LS3 isn't variable valve timing, the VVT motors have pistons with valve reliefs in them, Vette motors do not....
You read on the Internet forum about all these guys installing big cams in stock motors.....one thing to consider the Vette LS3 isn't variable valve timing, the VVT motors have pistons with valve reliefs in them, Vette motors do not....
. The guys at ECS run bigger cams in stock LS3s with no issues either. I felt pretty safe with this cam selection.
