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

GMPP hydrualic roller lifters

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Old Sep 3, 2008 | 12:46 PM
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Default GMPP hydrualic roller lifters

Has anyone used the GM Performance Parts lifters(part#12371047) with the hot cam? I just bought a set mail order and the body of the lifter isn't clearanced the same as the oem at the roller end. The original is beveled some, and the new lifters are not, they are flat. I'm afraid they will interfere with the cam lobe. Thanks for any helName:  DSCF0417.jpg
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Size:  1.43 MBp.

Last edited by t384; Sep 3, 2008 at 01:30 PM. Reason: added photo
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Old Sep 3, 2008 | 01:35 PM
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That area is refered to as the "Skirt". I believe most all stock replacement lifters are like that that now. Easier to machine.

It won't hurt anything and it won't hit the cam lobe.
Will

Last edited by rklessdriver; Sep 3, 2008 at 01:40 PM.
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Old Sep 3, 2008 | 03:30 PM
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Thanks for the reply Will, I'm installing a Hot Cam and just wanted to make sure it wouldn't hit on the ramp of the lobes-Dave
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Old Sep 3, 2008 | 03:32 PM
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The GMPP lifters are very good, I would not hesitate to run them in a build like yours.
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Old Sep 3, 2008 | 09:13 PM
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I have them in my '94 LT1 w/ hot cam and so far they are performing as should be.
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