C5 Horsepower rating
Burning Brakes
Joined: Aug 2004
Posts: 837
Likes: 2
From: Derry NH
The older models have weak rod bolts. I am sure someone can chime in on the years. I have a 99 and in no way would I take it above 425 rwhp, personally, on the stock rod bolts. I have my redline at 6600 and I like not being scared at that engine speed (I enjoy letting my engine rev into the upper ranges).
What do you have in mind? I am sure there are guys running large doses of nitrous on stock bottom ends without problems, maybe they will speak up.
What do you have in mind? I am sure there are guys running large doses of nitrous on stock bottom ends without problems, maybe they will speak up.
Drifting
Joined: Apr 2001
Posts: 1,936
Likes: 9
From: Menifee California
Even the older LS1's can handle more than that. The rod bolt issue becomes more of an issue as you spin the motor higher. You should be able to get 450 to 500 rwhp with out to much issue as far as the motor holding together goes.
Le Mans Master
Joined: Oct 2005
Posts: 7,088
Likes: 1,829
From: Metro Detroit Michigan
Originally Posted by tballs
I'm running a procharger which they claim around 540 rwh. I haven't had it tuned yet.
I would like to get around 600 I know the crank is steel but do you think the rod would be an issue?
I would like to get around 600 I know the crank is steel but do you think the rod would be an issue?
Weakest thing is pistons, next is rods.
But 600 rwh on an otherwise totally stock motor is beyond the ragged edge.
Some people manage it on the stock bottom end with the supercharger, cam and headers, and maybe heads.
Last edited by Warp Factor; Jun 3, 2006 at 05:57 PM.
Drifting
Joined: May 2004
Posts: 1,904
Likes: 2
From: London(UK)/Troyes(France)
You can also add a meth inj kit (from ECS). This helps preventing pinging and allows the motor to survive a little longer!
550-580 RWHP would be were I'd stop with a meth kit (that would make a reliable DD)
However quicksilver, a member here, is running 700 RWHP on his stock bottom end and a meth kit for a long time already
550-580 RWHP would be were I'd stop with a meth kit (that would make a reliable DD) However quicksilver, a member here, is running 700 RWHP on his stock bottom end and a meth kit for a long time already
Le Mans Master
Joined: Nov 2003
Posts: 8,004
Likes: 250
From: Tampa Fl
St. Jude Donor '12-'13-'14
Other than reading it on LS1/6 performance book, I havent read on here where someone has broken a rod nut/bolt.
I do here alot of number 7 cylinders burning up, Valves making contact with pistons, and more guys racing in the upper 6000RPMs where the motor let loose. Id like to see what failed in those motors.
I be interested to see of those who have ruined a motor, how you mod'd the motor and what failed.
I bet you'd find more of these answers at LS1tech.com
I do here alot of number 7 cylinders burning up, Valves making contact with pistons, and more guys racing in the upper 6000RPMs where the motor let loose. Id like to see what failed in those motors.
I be interested to see of those who have ruined a motor, how you mod'd the motor and what failed.
I bet you'd find more of these answers at LS1tech.com
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