Quote:
Originally Posted by andrewb70
Just to clarify, the LS7 heads and the LS3 heads are different. Some noticeable differences are valve angle, and intake port shape. The LS7 heads also use huge 2.25" titanium intake valves and 1.8:1 rockers, compared to the LS3/L92 2.16" intake and 1.7:1 rockers.
Andrew
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Good thread! I'm planning on doing the swap into my 68 ElCo, but I'm using the 5.3 and trans that is currently driving my Yukon around.
As to the LS3 vs LS7 heads, certainly the port shape is different. I just replaced the exhaust on my 08 LS3 Corvette with the commplete Z06 system. The "Z" manifolds are round port, while the LS3 is D port. Same spacing of course, so it bolts up fine.
As for fuel tanks, I have heard that the late Caprices (the rear drive, "bubble" style) have a in tank, plastic unit that is almost a direct bolt in to the old A bodies. Might want to check that one out.