YWhat's more impressive a 318 with iron heads that have 500 hours each of hand porting running 11.50s or aluminum heads out of the box running 11.00.
Fixed that for you.
J heads are so wonderful they quit making them ~45 years ago.
If you are going to mess with iron heads Magnums are a better choice.
Nope, didn't fix it, tell that to the 340 stocker guys. If you want to run fast, spend $20,000 on an engine. If you just want to have fun and run good, spend $0000. Js are perfect for his combo, aluminum is a waste of $2000. Now if he wants to ring it 9-10,000 rpm with no bottom end, go for it.
