1968-69 #840 Square Port Heads
 

I have sets of 3919840 for sale that are factory 375HP 396 and 427-425HP Copo Yenko's along with 427-435HP corvette applications. I have two sets dated A-22-9 both sets rebuilt and stock $1750 per set. One set dated L-3-8 and L-4-8 complete needing one spring replaced $1350. I have a set dated F-17-8 and F-18-8 rebuilt for $1500. I also have bare sets dated J-31-8 and C-25-9 that have been cleaned and magged for $1250 a set. Single heads dated A-12-8 and D-22-8 for $600 each. 330-770-2517 for any questions and can provide pictures if needed.