The Mopar P5249579 uses a special offset intake rocker. Question can anyone tell me the amount of off set I've heard .450 and .650? Who makes a set for these heads?
Not to hi-jack, but got a question. You read all these different things about needle bearings on different sites, books etc., some saying they are great and some saying to run for the hills, who/what do you believe? I know that application is everything here, but I have read in more than a few spots that even in a drag car needles can be a problem. And I now that is a broad statement, as not all needle bearing rockers are the same. Last couple of hot rods had stud mounted rockers (Small Block Ford). Sorry for the mini hi-jack....
If you run those heads on a low deck block, don't you need to use the STR-15 tall
deck intake base for proper alignment? The raised ports of these heads mate up
to a tall deck intake on a low deck block.