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A26B · 12-30-2011

1. There is a difference between early and late cam sprockets, 1 flat early vs 2 flats late.

2. Along those lines, I would remove the center stud on the exhaust side of the cyl head & plug the hole.

3. The 94 injector housings will bolt on OK, but the 90 cyl heads have a 3/4" hole in the vent ports, where the 91-95 models have only about a 1/4" hole. You will need to install destructor plugs in the corresponding ports of the inj housings with a similar size hole. There is a good thread about this and I wrote a tech article for the HOTB newsletter. It may appear in the next issue.

4. Then there is the EGR system. If you can plug the 94 plenum & lose the rest of it.

12-30-2011	#3
A26B Join Date: Dec 2003 Location: Arcadia, OK Posts: 3,404	Re: Early to late LT5 parts compatibility 1. There is a difference between early and late cam sprockets, 1 flat early vs 2 flats late. 2. Along those lines, I would remove the center stud on the exhaust side of the cyl head & plug the hole. 3. The 94 injector housings will bolt on OK, but the 90 cyl heads have a 3/4" hole in the vent ports, where the 91-95 models have only about a 1/4" hole. You will need to install destructor plugs in the corresponding ports of the inj housings with a similar size hole. There is a good thread about this and I wrote a tech article for the HOTB newsletter. It may appear in the next issue. 4. Then there is the EGR system. If you can plug the 94 plenum & lose the rest of it. __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.