The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How can I tell the differense between 5.3 and a 4.8 liter LS motors

whitels1 · 07-01-2012, 07:43 PM

Pull the oil pan and look up the casting number on the crank, the only difference between a 4.8 and a 5.3 is the crank and rods, and the 4.8 has flat topped pistons and the 5.3 has dished unless it's an aluminium 5.3.

07-01-2012, 07:43 PM	#13
whitels1 Registered User Join Date: Apr 2012 Location: Vegas Posts: 617	Re: How can I tell the differense between 5.3 and a 4.8 liter LS motors Pull the oil pan and look up the casting number on the crank, the only difference between a 4.8 and a 5.3 is the crank and rods, and the 4.8 has flat topped pistons and the 5.3 has dished unless it's an aluminium 5.3.