Yes , he started with the 360 casting on that project. Also has a 2.350 intake valve.

Ive got some flow data from some fully ported 320 castings, and they go well over 400cfm as well.

Quite a few have cnc programs for those castings

The seats are probably hanging on the wall by know. That's the whole beauty of not ordered bolt on ready heads. Nice to have your head guy assemble with what he knows works and last. I just pay the bill and don't look back or think about it.

Should be post some 440 cc runner numbers next. Lol.

Getrdunn, i was thinking about your build today while riding the fat guy recumbent bike at the gym. :)

I kept thinking about how you and Jim are pretty tight. Ive seen you guys that know jim well, mention his own 565ci bbc that he runs in his boat. If i recall , it made 800hp by 6000rpm with a cam similar to a 741, and has lasted many hours and been ran hard and put away wet.

To me, that sounds nothing short of an amazing feat. So with that being said, and you building a 565, why on earth would you want anything different ? It seems that the small cam, 6000rpm peak, fits exactly what you are looking for.

I mean, if my buddy had a pair of 468s making 1000hp with xxx combo, and has ran for a long time with no issues, id want what he has, instead of my 800hp versions.

Just curious. Most guys are listening to ac/dc at the gym, im listening to dart university and brian tooley interviews on my headphones, or thinking about oso engine builds. I need an intervention soon lol

I think they were in the 370 somethin range after porting. They started as 358cc. Ill find out

I believe that head has a 395 CC ported intake runner. You would need a serious engine to run that head.

Yes. Chad just replied to me on FB. 395cc.

My point , was that everyone seems to think, iron heads are "budget" low performance castings with minimal potential.

In those truck pull classes, they are looking to make big power, and an iron casting is madated by the rules. You simply arent gonna make the power, with a set of 300cc ports and a 741 cam when looking for 1000hp thru a single carb, especially if cubic inch limited to less than 500ci in some classes

Wished I had time for the gym but busy doing hard work and making things happen and have a lot in the works.

Jim v and I aren't best of friends by any means however would definitely consider him a good friend and have know each other since 1988 and kept in touch ever since and send a lot of people his way. He actusllly taught me a lot over the years.

You must have missed a post somewhere..... I am using his same grind. He and I talked about it the other day.

Btw

MT if you look at the thread heading it had absolutely nothing to do with debates over aluminum vs cast iron and what people think etc. Its just a simple promaxx 320 quality and flow thread.

Are the promaxx's you guys have the new ones or the old ones?