New heads any possible issues.
Shouldn't have any clearance issues with the valve covers. Seldom somebody does, but it's rare.
As for pushrod length, I can't stress this enough. Measure measure measure. More than likely, the pushrods that come with your heads won't be right. I did 5 sets of trick flows last year on 346's, and only 1 set came with the right length pushrods. Pushrods should be the very last thing ordered when putting together a motor.
Good luck.
Shouldn't have any clearance issues with the valve covers. Seldom somebody does, but it's rare.
As for pushrod length, I can't stress this enough. Measure measure measure. More than likely, the pushrods that come with your heads won't be right. I did 5 sets of trick flows last year on 346's, and only 1 set came with the right length pushrods. Pushrods should be the very last thing ordered when putting together a motor.
Good luck.





