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COMP Cams Ultra Pro Magnum Rocker Arms Chevy LS3

 
Old 03-07-2019, 07:01 PM
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Default COMP Cams Ultra Pro Magnum Rocker Arms Chevy LS3

Anybody running these?
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Old 03-07-2019, 08:22 PM
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I have them on some cathedral port heads; no complaints so far.
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Old 03-08-2019, 09:47 AM
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Originally Posted by KCS View Post
I have them on some cathedral port heads; no complaints so far.
What kind of lift are you running with them? I have a cam spec'd for 1.8 rockers that I'm considering running on a 370 build.
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Old 03-08-2019, 12:13 PM
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I have a set for sale if needed. Unused.
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Old 03-08-2019, 02:08 PM
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Originally Posted by 01CamaroSSTx View Post
What kind of lift are you running with them? I have a cam spec'd for 1.8 rockers that I'm considering running on a 370 build.
About .670 with the 1.8 ratio. Its a really tame Comp lobe too, either an HUC or Xtreme Marine, I forgot which.
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Old 03-08-2019, 02:43 PM
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Originally Posted by KCS View Post

About .670 with the 1.8 ratio. Its a really tame Comp lobe too, either an HUC or Xtreme Marine, I forgot which.
Thanks!

I'm feeling better about them but may still end up rolling with the TSP's.
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Old 03-08-2019, 03:37 PM
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.660 lift. 7800 rpm 1.8 ratio, no problems after two Drag Weeks on the same set
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Old 03-08-2019, 11:32 PM
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.661" Intake and Exhaust.....no issues what-so-ever.

KW
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Old 03-09-2019, 02:15 PM
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Originally Posted by sctrance View Post
.660 lift. 7800 rpm 1.8 ratio, no problems after two Drag Weeks on the same set
Originally Posted by KW Baraka View Post
.661" Intake and Exhaust.....no issues what-so-ever.

KW
The cam I'm planning to use for this build albeit a baby cam 236/242 hyd spec'd for 1.8 rocker arms has a lift of .632I .617E. I may step up to the Holly EFI high ram over the LS3 intake and get more aggressive with the camshaft so it's nice to get the feedback on these rocker arms.

Thanks for posting fellas!

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Old 03-11-2019, 09:33 AM
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Do you have a cam yet? I have a Cam Motion custom grind for my 416 with 1.8 rockers, only 3 test passes on it went 10.17 at 3400lbs. I'm going turbo and just getting ready to list it. Grind # XA246-365 258-355 112+4.
It's a bigger than your 236 but if the description of your build is accurate it is very streetable as long as you use roller rockers, my car is an NA Drag Week car and I actually ended up with a 10 degree bigger cam after testing several.
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Old 03-11-2019, 04:47 PM
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Originally Posted by sctrance View Post
Do you have a cam yet? I have a Cam Motion custom grind for my 416 with 1.8 rockers, only 3 test passes on it went 10.17 at 3400lbs. I'm going turbo and just getting ready to list it. Grind # XA246-365 258-355 112+4.
It's a bigger than your 236 but if the description of your build is accurate it is very streetable as long as you use roller rockers, my car is an NA Drag Week car and I actually ended up with a 10 degree bigger cam after testing several.
Yes this one's a NOS custom grind by CamMotion on an 8620 core but the one you have is more aggressive. Is it hydraulic or solid?
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Old 03-12-2019, 10:37 AM
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Hydraulic, with Comp short travel lifters and BTR springs I tested it to 7500 shift point 7700 trap rpm no problem.
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