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Old 06-16-2013, 08:15 PM   #1
NipTuckTaxi
 
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ls3 pistons in l99

Anyone made this change for a bit more compression.? May be going in to check, change piston rings soon. May change l99 to ls3 pistons if its possible.
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Old 06-16-2013, 08:23 PM   #2
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Im also interested in this.
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Old 06-16-2013, 08:25 PM   #3
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It would be alot easier and less expensive to just have the heads milled for the desired compression.
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Old 06-16-2013, 08:34 PM   #4
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to answer your question, Yes they will work, only difference is the ls3 is flat top and l99 has valve releifs. Same bore size and same rings.
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Old 06-16-2013, 08:43 PM   #5
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Id keep the l99s to give you more exhaust valve clearance and just mill heads.
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Old 06-16-2013, 08:44 PM   #6
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Quote:
Originally Posted by VADER SS L99 View Post
It would be alot easier and less expensive to just have the heads milled for the desired compression.
Quote:
Originally Posted by Rhino79 View Post
Id keep the l99s to give you more exhaust valve clearance and just mill heads.
wcch will work your heads into magic...the l99 pistons are there for a reason
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Old 06-16-2013, 09:08 PM   #7
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Quote:
Originally Posted by Rhino79 View Post
Id keep the l99s to give you more exhaust valve clearance and just mill heads.
Yup!! Best thing to do. If your willing to swap pistons swap to a forged one not another hyperexplosive piston. Just saying.
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Old 06-16-2013, 09:16 PM   #8
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Originally Posted by VADER SS L99 View Post
It would be alot easier and less expensive to just have the heads milled for the desired compression.

I think, and I could be wrong, but I was quoted somewhere around $150 to mill the heads. Since the porting had already been done.
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Old 06-16-2013, 11:06 PM   #9
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I think, and I could be wrong, but I was quoted somewhere around $150 to mill the heads. Since the porting had already been done.
Thats good because thats alot less inexpensive and easier than new pistons.
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