1406 is for the lt1 ports, 1407 is for ported lt1 heads(im pretty sure). the 1404 is sbc, but works with lt1.
I'm using 1404 cause they were like 15 bucks cheaper and in stock. lol
Quote:
Originally Posted by KLAB
surprised it took 2 years for pieces to start falling out lol
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I still have a crap gasket on the other side, still hasnt failed lol