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Project1970 · 02-22-2003, 06:12 AM

Erm...the GenIII Vortec heads (the 4.8, 5.3, and 6.0) will NOT fit an older smallblock. Not even close. The Vortecs that DO fit are the 5.7L (350) GenI Vortecs.

The fact that the donor is a 4WD and yours is a 2WD would complicate a full swap slightly...in that as far as I know, the 4WD tranny is not set up to bolt to a driveshaft. It will also almost guaranteed need some computer reprogramming, don't forget about that...that's relatively cheap to do when you consider how many things that takes care of (removing unused systems from the computer, bumping timing and fuel maps some, etc)

02-22-2003, 06:12 AM	#7
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	Erm...the GenIII Vortec heads (the 4.8, 5.3, and 6.0) will NOT fit an older smallblock. Not even close. The Vortecs that DO fit are the 5.7L (350) GenI Vortecs. The fact that the donor is a 4WD and yours is a 2WD would complicate a full swap slightly...in that as far as I know, the 4WD tranny is not set up to bolt to a driveshaft. It will also almost guaranteed need some computer reprogramming, don't forget about that...that's relatively cheap to do when you consider how many things that takes care of (removing unused systems from the computer, bumping timing and fuel maps some, etc) __________________ Project1970 - LS1 Swap Complete!