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Knocking after head swap

Generation III Internal Engine 1997-2006 LS1 | LS6

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Knocking after head swap

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Dec 1, 2005 | 02:13 AM

#1

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From: Auckland, Nth Is, New Zealand.

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Knocking after head swap

Had PRC stg 2.5 heads fitted, run the car on Sat & Sun it started making a
Bruuuddddeerrrr Ha ha sort of noise when under load, definetly not the valve train. Have been told by an Engine builder it sounds like a piston which could have cracked its skirt,not valve piston either, bloody thing sounds like a diesel.
My question: What is the best brand of LS1 Forged Pistons to buy & as i'm in N.Zealand who or what sponsor carries them.
Thanks guys, wayne.

Last edited by ls1 1990 VN; Dec 1, 2005 at 02:41 AM.

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Dec 1, 2005 | 06:38 AM

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From: BFE

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I like Wiseco

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Dec 1, 2005 | 09:36 AM

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From: Castle Rock, CO

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why would swapping heads break a piston unless you had insufficent valve clearance?

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Dec 1, 2005 | 12:14 PM

#4

Race your car!

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In your sig, you have mention of a chromoly flywheel that si lightened.. who makes that?

As for your question... diamond makes some good stuff.

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car, disel, head, knocking, ls1, swap

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