Then swap them for aluminum heads. You can go with 317s milled down to raise compression or go with LS6/243 heads if you want. I'd go with some inexpensive ported LS6 heads if you're trying to keep costs down. Texas Speed offers a good budget LS6 ported head. LS6 intake is a great idea. You'll need the steam tubes too I believe. LQ throttle body will fit the LS6 intake.
Did you get the PCM with the engine?
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Trey
Current ride: 2001 BMW 540iT soon to be manual swapped.
Former rides: 1979 Trans Am WS6: LT1/T56, Kore 3 C5/6 brakes, BMW 18in rims
00 BMW 540i/6: Suspension, wheels, and ACS bits.
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