Originally Posted by dwydendorf (Post 147494)

What I should have said was that the aluminum heads should be replaced on an indivudal basis for each engine combo, the way it is now, not to replace the older heads across the board, as was suggested in the title of this post. There should also be more incentive to use the older heads(i.e. more horsepower, maybe more than is in place now) so the racers that choose to use the older heads are not at a disadvantage. I do not feel that making aluminum heads legal will save the racers any money because head porters will still port the new castings thin like the oem castings in a search for even more horsepower and everyone will be back where they started.

Originally Posted by treessavoy (Post 147393)

Neither Indy nor Edelbrock make a legal set of heads for the big or small Mopars and I looked at the Edelbrock site and they list only THREE sets of NHRA accepted heads: BBF, BBO, and BBP; nothing for Amc and Buick and they list no legal aluminum heads for any of the small blocks.

JimR

Originally Posted by Al Kuehl (Post 147527)

Very good post . I agree with you 100% . I really do feel that if a replacement head is avalible in cast iron that should be good enough . But not every combination has a cast iron head avaliable . If there are no iron head's avalible then Aluminum would be ok as long as the valve size's are stock the combustion chamber meet's spec's and the In and Ex port's meet spec's . The head porter's are still going to be taking it to the limit that is part of the game . We are all trying to find a way to go faster that is part of the thrill of doing what we do .
Al

Originally Posted by 69ss/rs (Post 147627)

Jim, in Edelbrocks' catalog they list part numbers for both small & big block mopar heads. Now as far as being legal, that is up to NHRA; no head is legal till they say so. You will also find the other heads you are looking for in there also.

Originally Posted by treessavoy (Post 147649)

The Edelbrock Mopar heads are no where close to legal. The valves are too big, the ports are too, and the runners are too big....the same can be said of the Indy heads. To be legal for big blocks they would have to produce at least 6 different big block heads.

JimR

Originally Posted by Al Kuehl (Post 147707)

I alway's liked the Max Wedge car' s . I thought Stacy McCarthy said that Mopar had the 518M as a replacement head . They were just really cool car's .
Al

Originally Posted by X-TECH MAN (Post 147715)

The correct 518M head is almost impossable to find now. Not all of them came with the correct valve size either from MoPar. I went thru 3 sets to find 1 pair that was correct. 2,14 intake size is a little to large if you want to go thu teardown. Mopar dosent care about anything except the SS/AH Hemis and the new "Paper Cars".

Originally Posted by Lynn A McCarty (Post 147720)

Actually Terry,

They made two versions. One was a stock replacement with the 2.08 valve the other was with the 2.14 like an upgrade head. We ordered a set from Chrysler and got them straight away. This was about a year ago. They were 100% better for porting than the stock castings. They flow 30 more cfm with a smaller valve than my Hi-Po Pontiac heads or Stacy's 428 heads. Of course they got good cc numbers from the NHRA cc fairy and we didnt.

This puppy made huge power, but Grand-Pa Ron is hugely scared of it. He has gone from 10.70 in the spring to 10.10 last weekend. About a 1.45 60 foot. Come on Grandpa put your foot into it!

Originally Posted by dragst racer (Post 147745)

I have read this and have a question, the guy that started this do you run super stock?