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aviatorskate · 05-12-2020, 01:58 PM

I have a 2004 Vortec 5.3L LM7 Truck engine with 862 heads. I found a set of rebuilt 243 heads, can i swap these heads with no issues ? The 243's have a larger intake valve and larger CC.

Thanks
Craig

05-12-2020, 01:58 PM	#1
aviatorskate Registered User Join Date: May 2015 Location: Texas Posts: 18	2004 Head Swap I have a 2004 Vortec 5.3L LM7 Truck engine with 862 heads. I found a set of rebuilt 243 heads, can i swap these heads with no issues ? The 243's have a larger intake valve and larger CC. Thanks Craig