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Old 10-22-2012, 03:59 AM   #1
GMC70c20
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Join Date: Feb 2003
Location: Iowa
Posts: 974
valve relief pistons in a lq4?

I bought a lq4 a couple years ago and am finally getting around to getting it built. The enigne came out of a 2006 van and according to the casting number on the block it is a 2005. It is a gen III block because the knock sensore are in what would be the lifter valley and the cps is in the back of the engine. I thought that the lq4s all had dished pistons with no valve reliefs but this one has one for the intake valve. What is going on here?
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