The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Difference between a 4.8 and 5.3 ls engine

Kabwe · 07-28-2010, 03:11 PM

The 4.8 has flat top pistons and the 5.3 has dished. My block did not have the 4.8 or the 5.3 highlighted so I had to look at the pistons. A HO 5.3, it will have flat tops, but the block is also aluminum.

07-28-2010, 03:11 PM	#7
Kabwe Certified Car Nut Join Date: Jan 2005 Location: Inglewood, California Posts: 3,118	Re: Difference between a 4.8 and 5.3 ls engine The 4.8 has flat top pistons and the 5.3 has dished. My block did not have the 4.8 or the 5.3 highlighted so I had to look at the pistons. A HO 5.3, it will have flat tops, but the block is also aluminum. Last edited by Kabwe; 07-28-2010 at 03:23 PM.