The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 99-00 6.0l flywheel gm# 12561757(nv4500) not available?aftermarket options?

rickcdewitt · 07-31-2015, 01:11 AM

i wish i could use a later model flywheel for the motors with the crank almost flush with the seal. but unfortunately 99-00 m/t motors have .400 more crank stickout from the rear of the block compared to the 5.3's(a/t) and later engines. i'll probably get a later engine or crank when its time to rebuild.

07-31-2015, 01:11 AM	#10
rickcdewitt Registered User Join Date: Jan 2011 Location: Northern CA Posts: 163	Re: 99-00 6.0l flywheel gm# 12561757(nv4500) not available?aftermarket options? i wish i could use a later model flywheel for the motors with the crank almost flush with the seal. but unfortunately 99-00 m/t motors have .400 more crank stickout from the rear of the block compared to the 5.3's(a/t) and later engines. i'll probably get a later engine or crank when its time to rebuild.