C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Proform Roller Rockers

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Old May 15, 2005 | 09:14 PM
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Default Proform Roller Rockers

What Roller Rockers seem to be the best?

I'm looking at a set of Proform's for the center bolt valve covers at around $200.00 - Any feedback?
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Old May 15, 2005 | 09:24 PM
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Originally Posted by 65coop
What Roller Rockers seem to be the best?

I'm looking at a set of Proform's for the center bolt valve covers at around $200.00 - Any feedback?
Complete junk, stay away from them. I saw a set fall apart in just a few thousand miles. Good ones are Comp Cam Pro Magnums, Crane Golds, etc. Don't scrimp here.
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Old May 15, 2005 | 10:35 PM
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Pony up another $100 and get a set of Comp Cams ProMagnum RRs along with hardened guide plates and push rods.
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Old May 15, 2005 | 10:51 PM
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Is this what I'm looking for? Roller Rockers

Pony up another $100 and get a set of Comp Cams ProMagnum RRs along with hardened guide plates and push rods.
Who has them in stock and do you know what the part numbers are?
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Old May 15, 2005 | 11:26 PM
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Summit sells them or you can go directly to Comp Cams.

I found that the latter move got me parts next day when Summit was out of stock.

What year Vette & what engine are the RRs going into?
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Old May 15, 2005 | 11:32 PM
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1990 L98 w/ stock heads and aftermarket valve covers (center bolt)
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Old May 15, 2005 | 11:41 PM
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"Is this what I'm looking for?"
It is if you have a motor with self aligning rockers , generally the roller cam motors,post '87.
Different part no for earlier motors.
Other eBay vendors have Pro Magnums as low as $260.00
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Old May 16, 2005 | 12:48 AM
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It is if you have a motor with self aligning rockers , generally the roller cam motors,post '87.
Different part no for earlier motors.
Other eBay vendors have Pro Magnums as low as $260.00
The car is a '90 with the L98 motor - Does the '90 have self aligning rockers?
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Old May 16, 2005 | 12:57 AM
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Yes the L98s from '88 through '91 with the #113 Al heads had self aligning rockers.

Indeed you can get the non self aligning ProMagnums for around $260. I think that hardened push rods and guide plates will run <$100.

If you plan to rev your L98 into the region where you can really use 1.6:1 RRs you should install better valve springs and new keepers. Also, toss the tin oil shedders that are atop your stock springs to lighten up the valve train a little.

Since you have aftermarket valve covers I can't say if you will need to do any machining on them to clear the RRs.
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Old May 16, 2005 | 06:10 AM
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I got the crane golds because they came with a hotcam kit I purchased. If I was going to buy a set again, I would go with the pro mags. I put a set of those in a friends chevelle and they are nice pieces.
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