C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Rocker gapping

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Old Jan 9, 2006 | 08:46 AM
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Default Rocker gapping

Does anyone the clearance that i need to have if im running a performer rpm cam? Thanx in advance for your help
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Old Jan 9, 2006 | 08:55 AM
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Zero - It is a hydraulic cam.

-Mark.
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Old Jan 9, 2006 | 09:33 AM
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You might want to get some solid lifters for that cam, it does come with hydraulic lifters but the cam has a lot of lift and duration... with the right heads and intake you should see 6000 rpm easily....

BTW, I had this cam - you'll need at least 9.5:1CR to get it running good... I took it out and run a milder cam now. If you're interessted in my RPM cam email me
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Old Jan 9, 2006 | 10:51 AM
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My engine is 95% done.. its goin back in the vette this afternoon. Im running the iron eagle 180 heads, with the matching performer rpm intake.. thanx for the offer tho.. So i should have zero gap between the rockers?
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Old Jan 9, 2006 | 11:44 AM
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Originally Posted by BanGnGearS
My engine is 95% done.. its goin back in the vette this afternoon. Im running the iron eagle 180 heads, with the matching performer rpm intake.. thanx for the offer tho.. So i should have zero gap between the rockers?
with hydraulic lifters set the rockers to zero lash, then turn another 1/2 turn (this is per the books).
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Old Jan 9, 2006 | 11:57 AM
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just talked to edelbrock this am for the same thing. they say 1/4 turn.
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Old Jan 9, 2006 | 12:00 PM
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Originally Posted by panchop
just talked to edelbrock this am for the same thing. they say 1/4 turn.
1/2 or 1/4 turn does not make that big of a difference with hydraulic lifters, you'll have to re-adjust after the engine has run anyway.
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Old Jan 9, 2006 | 03:40 PM
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OK, thanx for the help.. the engine is in!!!!! looks great.. i'll post pics soon.. Thanx for the help tho...
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