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milled heads with stock pushrods?

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Old May 26, 2004 | 08:54 AM
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Default milled heads with stock length pushrods?

Just wondering, I now (finally) have the motor back together with all of the work done to include the heads have been milled .030.

My question is... I put the motor back together with the hardened (Thunder racing) 7.4" (Stock length) pushrods that I had in there before and was wondering, Is this going to be okay?

Thanks!
Troy

Last edited by TK 14 SS; May 26, 2004 at 10:00 AM.
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Old May 26, 2004 | 12:06 PM
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it'll be okay till they all bend apun startup
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Old May 26, 2004 | 12:27 PM
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Use .030 shims under the rockers and you will be okay. This will make up for having the heads milled.
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Old May 26, 2004 | 12:43 PM
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It depends on the base circle of your new cam, most aftermarket cams have a smaller BS and the milling will make the stockers come back to be about right.
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Old May 26, 2004 | 12:56 PM
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Allright, thanks guys. I put in a new custom grind Comp cam (from Combination Motorsports) so thinking (hoping) that it will be okay.

But I have to admit, I obviously addressed this possible issue a little late, didn't I ?

Onyxxtreme - you made my heart skip a beat at first
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Old May 26, 2004 | 01:03 PM
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All the Comp Cam LS1 grinds I have measured had a 0.030" smaller basecircle. If you milled your heads 0.030" then stock length will be ideal.
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Old May 26, 2004 | 01:32 PM
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Awesome!!!
Thanks for the info

Troy
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Old May 26, 2004 | 02:41 PM
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Hmmm. I' running a MTI C1 which is a Comp XE lobe and S2 heads milled .030, 7.400" pushrods and .030 shims under the rockers.
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Old May 26, 2004 | 03:23 PM
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You may been putting too much load on the lifters, did you find out what the base circle of the cam was, that is a big factor.
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Old May 27, 2004 | 10:30 AM
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If the base circle of the cam was smaller than stock and I shimmed the rockers, that would cause me to run too little preload.
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Old May 27, 2004 | 10:46 AM
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From: Troy Al
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You are correct..
I was in a hurry, My bad.
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