Quote:
Originally Posted by ss3011
Seems to me the issue is how to adapt the front cover to the old style block . Isn't the shape and bolt pattern very different . Also wouldn't the water in the heads be deadheaded .
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Drew is right and it isn't all that complicated. You do have to weld up the water passages on the LT1 heads (legal by tech) and fill in the top of the timing chain cover with epoxy for the LT1 to adapt to a SBC block. The LT1 timing cover has somewhat of an overbite is the best I can describe it when placed on a SBC block.
There are two water passage plugs on the heads that you remove with an adapter that bolts on to adapt to an -AN fitting. A standard SBC water pump with enough spacers to make a good border wall will be necessary to clear the Optispark or MSD. I suggest that you use the largest water return lines and -AN Y fitting coming from the heads that will fit.
Hope this helps.