Compstar rods
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Burning Brakes
Joined: Nov 2015
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From: Kuwait
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Joined: Feb 2017
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Technically GM says stock rods can handle 460 hp as this is what they're warrantied at. Now obviously they can handle much more, up to double that as we've seen. I think the same principal will apply to the callies rods. I have the 6.125 compstar rods in my 416 so I looked into this very subject I found several ls builds making 1000whp on these rods and a C7, I believe it was Theta? Making 900+ on them.
Thread Starter
Burning Brakes
Joined: Nov 2015
Posts: 1,160
Likes: 40
From: Kuwait
Technically GM says stock rods can handle 460 hp as this is what they're warrantied at. Now obviously they can handle much more, up to double that as we've seen. I think the same principal will apply to the callies rods. I have the 6.125 compstar rods in my 416 so I looked into this very subject I found several ls builds making 1000whp on these rods and a C7, I believe it was Theta? Making 900+ on them.
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Joined: Feb 2017
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i won't be afraid to push mine to that level. That being said i have tremendous faith in my engine builder. I know the rods are sized and torqued perfectly. Along with the block being torque plate and align honed.
Cruising
Joined: Oct 2015
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I bent 4 around the 1140 mark. Many passes with 1030 ish. I wouldn't bother with them just go ahead and get the ultra I beams. That way you are covered. Probably wouldn't have notice it driving but power fell off (lost about 90) on the Dyno.
Thread Starter
Burning Brakes
Joined: Nov 2015
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From: Kuwait
I don’t think I would need the i beams, im looking for 1100 whp maximum, I think i may order the ultra h beam, or just stick with the compstar h beam
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
We had a 850rwhp GS here locally break a stock rod right in the middle. The small and big ends were fine, bearings looked great...Just broke the rod on a long highway pull.
I think anything over 800 rwhp on stock LT1 rods is on borrowed time...especially if you actually run the car.
Compstar rods are much stronger.... I made 900 rwhp on compstar rods in a 402" LS for 2 years, 8k miles and never had a problem with them.... The Compstar crank on the other hand, is junk.
I think the compstar rods will be fine at 1000 rwhp (stick car)....
I think anything over 800 rwhp on stock LT1 rods is on borrowed time...especially if you actually run the car.
Compstar rods are much stronger.... I made 900 rwhp on compstar rods in a 402" LS for 2 years, 8k miles and never had a problem with them.... The Compstar crank on the other hand, is junk.
I think the compstar rods will be fine at 1000 rwhp (stick car)....
Last edited by ajrothm; Sep 24, 2017 at 06:41 PM.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
We had a 850rwhp GS here locally break a stock rod right in the middle. The small and big ends were fine, bearings looked great...Just broke the rod on a long highway pull.
I think anything over 800 rwhp on stock LT1 rods is on borrowed time...especially if you actually run the car.
Compstar rods are much stronger.... I made 900 rwhp on compstar rods in a 402" LS for 2 years, 8k miles and never had a problem with them.... The Compstar crank on the other hand, is junk.
I think the compstar rods will be fine at 1000 rwhp (stick car)....
I think anything over 800 rwhp on stock LT1 rods is on borrowed time...especially if you actually run the car.
Compstar rods are much stronger.... I made 900 rwhp on compstar rods in a 402" LS for 2 years, 8k miles and never had a problem with them.... The Compstar crank on the other hand, is junk.
I think the compstar rods will be fine at 1000 rwhp (stick car)....
But agree more than a few have made it for some time.But HERE IS THE BIG QUESTION really how hard was those cars really pushed. Now that more & more are getting into the 1/2 & 1 mile hard pulls trying to get over are into the 200 mph. We will see more & more of the stock parts giving out. Just my 2 cents...
Last edited by robert miller; Sep 25, 2017 at 09:27 AM.
Thread Starter
Burning Brakes
Joined: Nov 2015
Posts: 1,160
Likes: 40
From: Kuwait
We had a 850rwhp GS here locally break a stock rod right in the middle. The small and big ends were fine, bearings looked great...Just broke the rod on a long highway pull.
I think anything over 800 rwhp on stock LT1 rods is on borrowed time...especially if you actually run the car.
Compstar rods are much stronger.... I made 900 rwhp on compstar rods in a 402" LS for 2 years, 8k miles and never had a problem with them.... The Compstar crank on the other hand, is junk.
I think the compstar rods will be fine at 1000 rwhp (stick car)....
I think anything over 800 rwhp on stock LT1 rods is on borrowed time...especially if you actually run the car.
Compstar rods are much stronger.... I made 900 rwhp on compstar rods in a 402" LS for 2 years, 8k miles and never had a problem with them.... The Compstar crank on the other hand, is junk.
I think the compstar rods will be fine at 1000 rwhp (stick car)....
Le Mans Master
Joined: Jul 2005
Posts: 7,405
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From: New Castle Del.
St. Jude Donor '09
Ive been 8.27@167 with compstar crank and rods haha.... that was an F1r and a 100 shot.... i wouldnt recommend that but they were fine.... Detonation will kill lots of things though if that happens.
Thread Starter
Burning Brakes
Joined: Nov 2015
Posts: 1,160
Likes: 40
From: Kuwait
Is it the i beam or h beam Do u think that rods will hold 1100whp? Only roll races and the car is m7, its will be from a ysi and maybe 100 shot
Last edited by black_c7; Sep 25, 2017 at 07:51 PM.
Le Mans Master
Joined: Jul 2005
Posts: 7,405
Likes: 353
From: New Castle Del.
St. Jude Donor '09
Id probably do it if it was my own car but always assume the risk.... and the tune must be ONNNNN.... if you get detonation it can easily bend or break the rod... just remember that.
Thread Starter
Burning Brakes
Joined: Nov 2015
Posts: 1,160
Likes: 40
From: Kuwait
Team Owner
Joined: Jan 2007
Posts: 29,063
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From: cookeville tennessee
Again when the car is done post some 1/8 r 1/4 track slips here..
Robert