Are there any aftermarket LT1 cylinder heads that are 50-state legal?

 

Air Flow Research has some...

You can port your own heads... Advanced Induction or Cmotorsports

When you do your heads and cam, get your computer reprogrammed. I went with Bryan at PCMFORLESS and he did a great job. I'm still tinkering with a knock retard issue and he is very patient while I tackle this issue.

There are several other options... I understand that Edelbrock and Trick Flow will have new LT1 heads this year coming soon.

 

edelbrocks will be out by the end of april supposedly. here are the flow numbers that were emailed me by edelbrock
.100-61/52 .200-117/100 .300-174-140 .400-220/167 .500-242/184 .600-232/192

 

Edelbrock... those are decent numbers for 170s. With some work, they will be a strong contender. I'd really like to hear what the results will be from the board after they are worked.