Original GM 3946074 L88/ZL1 Aluminum Heads VIRGIN Originals No Porting or Repairs
 

This is a pair of awesome original 3946074 heads. These were used by GM on the all aluminum ZL-1 427, second design L-88 427, and 1971 LS6 Corvette. The heads have rectangular intake ports, round exhaust ports and open combustion chambers. These heads have also been the choice of hot rodder's for decades.

These heads are in amazing original condition. There is no porting, corrosion, breaks, or repairs. All threads are in great shape with no helicoils or thread inserts. The heads have 1974 date codes. The dates are in the underside of the intake runners and can not be seen when installed, even is you remove a valve cover. They really don't get any nicer than this!

SOLD


Thanks,

Jason

Bump.


Thanks,

Jason