The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 96-99 5.7 vortec swap

kevinr1970 · 03-05-2015, 09:18 PM

For some reason I read it that he wanted a vortec "long-block" and to keep the TBI; after rereading the OP, not sure where I got that

So yes completely different wiring, fuel delivery, etc.
The only thing I think you would save going vortec 5.7 vs. 5.3, is engine mounts, and manifolds/headers and exhaust mod.
I have seen people asking silly $ for a high-mile 5.7, and I have seen some pretty cheap LS engines, that part might be a wash.

03-05-2015, 09:18 PM	#7
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Re: 96-99 5.7 vortec swap For some reason I read it that he wanted a vortec "long-block" and to keep the TBI; after rereading the OP, not sure where I got that So yes completely different wiring, fuel delivery, etc. The only thing I think you would save going vortec 5.7 vs. 5.3, is engine mounts, and manifolds/headers and exhaust mod. I have seen people asking silly $ for a high-mile 5.7, and I have seen some pretty cheap LS engines, that part might be a wash. __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold)