LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Pro mags and valve covers

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Old 12-08-2008, 11:54 AM
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Default Pro mags and valve covers

What do most do to get the poly locks to clear. We cut the cross bracing out but I think the covers are flexing and causing a leak on the passenger side.
Old 12-08-2008, 01:29 PM
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For both sets of valve covers I've ran with those Rocker's I just grinded down around the I supports a good amount and they worked fine. I cut the one side of the bracing out on my stock valve covers and it didn't make them flex at all. If you cut both sides out I could see that but you don't need to cut both sides out.
Old 12-08-2008, 01:31 PM
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we cut both side out. Guess its a goof
Old 12-08-2008, 01:35 PM
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I just ground down the supports also, I don't think I had cut anything out of them. Not knowing I didn't have to do it I ground down on the inside of the tops of them too.
Old 12-08-2008, 01:38 PM
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I'm having to grind around the supports as well
Old 12-08-2008, 02:05 PM
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Could someone please post pics of where the stock valve covers need to be cut and/or ground? I am currently in the middle of a build with exactly that scenario - stock covers with Compcams Promagnum SA 1.6 rockers.
Thanks in advance.
Old 12-08-2008, 02:08 PM
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Look at the bottom of this page:
http://www.golenengineservice.com/ht...html#valvecmod
Old 12-08-2008, 02:10 PM
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THis is what I had to do to get mine to work....

Old 12-08-2008, 02:17 PM
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Wow. Wish I had taken pics of mine when I had them off, I don't have anything like that cut out. I had just ground down both sides of the supports flat.
Old 12-08-2008, 05:18 PM
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I just bent the bottom of the supports to make them straight up and down.
Old 12-08-2008, 05:57 PM
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i had to go with the lt4 composite valve covers, promags were hitting the top of the valve cover even after i cut the supports out. have no problems with the lt4 valve covers

Last edited by mike2244; 12-08-2008 at 06:35 PM.
Old 12-08-2008, 10:33 PM
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I was under the assumption that compcams 1.6 roller rockers fit under the valve covers with no issues, am I wrong??
Old 12-09-2008, 03:20 AM
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Originally Posted by JB_97ws6TA
I was under the assumption that compcams 1.6 roller rockers fit under the valve covers with no issues, am I wrong??
Atleast comp pro mag 1.6 NSA require cutting.
Old 12-09-2008, 08:53 AM
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I went aftermarket. There shiiiiinnnnyyy

You could just pick of a cheapo set on ebay. As long as they have the correct bolt pattern and a gasket retention area, your good to go.
Old 12-09-2008, 12:24 PM
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So the NSA's are larger than the SA's then?
Old 12-09-2008, 12:53 PM
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Would they perhaps be wider? I just went out to the garage and slip fit the stock covers on the head, it went on fine with no gasket for height clearance. I have SAs. Would that be an indication that I am O.K.? The engine is upside down because I am working on the $*&%* Canton oil pan, so I did not try rotating the crank to see if anything hit during rotation.
Old 12-09-2008, 02:01 PM
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This only applies to nsa rockers, the have a wider body than sa rockers!
Old 12-09-2008, 02:36 PM
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Originally Posted by kinglt-1
This only applies to nsa rockers, the have a wider body than sa rockers!
Correct, My Comp Cams SA's fit fine with zero cutting to the valve covers but not my Comp Cams NSA's which are taller and wider.
Old 12-09-2008, 02:51 PM
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Sweet. Thanks, guys, I thought I was going even crazier than usual.
Old 12-09-2008, 03:02 PM
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Originally Posted by koolaid_kid
Sweet. Thanks, guys, I thought I was going even crazier than usual.
NP you should be good to go. Yeah 6 cylinder my *** Mr. STS



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