Anyone try Comp Cam rocker arms?
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,483
Likes: 1
From: Wilmington DE
Anyone try Comp Cam rocker arms?
I just saw a short "commercial" interview on TV about Comp Cam's new 1.75 and 1.85 rocker arms for an LS-1 engine. They are a direct bolt on repalcement for the stock rocher arms and are said to fit under the stock rocker arm cover. Horsepower gains were implied but not quantified.
Does anyone know anything about this product, or has anyone changed to higher lift rocker arms, and if so, what kind to HP increase is possible? Is there any downside to going to higher lift rocker arms?
Does anyone know anything about this product, or has anyone changed to higher lift rocker arms, and if so, what kind to HP increase is possible? Is there any downside to going to higher lift rocker arms?
Team Owner
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Re: Anyone try Comp Cam rocker arms? (Jim 47)
I had the 1.8 Crane Full Roller rockers on my car for a while. At higher RPM's you can feel the car pull harder because of the increased lift the rockers gave me. My understanding is that the longer lever of the rocker can cause a side pressure to the valve over time. In addition to that you will need to replace your valve springs because of valve float that will occur with the new lift from the rockers. I spent 3 months figuring out that one on my car to get it to run correctly.. :mad
IMO, you should install a cam, new double springs and leave the stock rockers in the car. Your results will be MUCH BETTER!! :yesnod:
vetterdstr :cheers:
IMO, you should install a cam, new double springs and leave the stock rockers in the car. Your results will be MUCH BETTER!! :yesnod:
vetterdstr :cheers:
Melting Slicks
Joined: Oct 2002
Posts: 2,855
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Re: Anyone try Comp Cam rocker arms? (vetterdstr)
I like the lack of friction from the roller tip and I will probably get a 1.7 set for the 436 for that reason and I would think with the same as stock 1.7 I should not have any of the related problems you mentioned, I don't expect any hp gains of course. I won't be using the 1.8's with the 600 to 612 cam and I'm not sure they would clear the piston anyway.
Pro
Joined: Mar 2002
Posts: 712
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From: Santa Clarita Ca
Re: Anyone try Comp Cam rocker arms? (Jim 47)
If you 1.7 or 1.8 ratio take a look at the Yella Terra line of rockers - ~$480 per set..
link to some pictures of the rockers (end of the album)
Yella Terra rockers arms in this album
[Modified by '97 C5, 7:51 PM 3/30/2003]
link to some pictures of the rockers (end of the album)
Yella Terra rockers arms in this album
[Modified by '97 C5, 7:51 PM 3/30/2003]
Melting Slicks
Joined: Mar 2001
Posts: 2,809
Likes: 0
From: Frisco TX
Re: Anyone try Comp Cam rocker arms? ('97 C5)
If you 1.7 or 1.8 ratio take a look at the Yella Terra line of rockers - ~$480 per set..
link to some pictures of the rockers (end of the album)
Yella Terra rockers arms in this album
[Modified by '97 C5, 7:51 PM 3/30/2003]
link to some pictures of the rockers (end of the album)
Yella Terra rockers arms in this album
[Modified by '97 C5, 7:51 PM 3/30/2003]
Melting Slicks
Joined: Mar 2001
Posts: 2,809
Likes: 0
From: Frisco TX
Re: Anyone try Comp Cam rocker arms? (kromberg)
