I'm installing an LT4 engine (from a Corvette) into my 94Z. Although my LT1 accessory bracket for the Alternator and PS pump bolts right up, the LT4 has a dual mass damper on the crank that moves the serpentine belt out about 1 inch.

Questions:
-Did the Camaro / Firebird LT4s have a special bracket to adjust for this, or were spacers used to move the standard bracket out to match? Or was the standard damper used so bracket would line up normally?

-If the bracket is spaced out to line up the belt, it gets pretty tight for the lower two plug wires from that side of the optispark. I have not fit them up yet to see how bad, but looks like the straight boot would not be able to be installed. Is there a workaround to this?

 

Sounds like using an LT1 damper would be the easiest solution.

 

I don't think the accessory spacing is the same, so you will likely need the Corvette crank hub and pulley.

 

I am running an f body hub with my Corvette accessories. They work fine. The balancer is definitely different. You can just switch the balancer.