For those you need " Big" oval ports check this out !!

http://www.brodix.com/Demo/pb1803page.html

Now I just need to build a 572ci to go under these heads graemlins/clonk.gif

I work on a set of Dart Big Chief Ovals. Those are reallly cool heads. You can just about put your hand down the intake ports. graemlins/thumbsup.gif graemlins/thumbsup.gif

I already ran those..didn't want to make the other street cars feel bad running 9's, so I took them off.... :D

Reminds me of the old 427 "tunnel port" Ford FE heads... ;)

Wonderful, they look just like my "781"'s :D

Originally posted by BillsCamino:
Reminds me of the old 427 "tunnel port" Ford FE heads... ;) Were those the ones that had big round intake ports with pushrod tubes running right down through the middle of each one?

Wow!
Kinda reminds me of Pontiac Ram Air IV heads!
Amazing.

It's interesting it has an 2.450 intake valve and 'only' a 1.860 exhaust valve.........

Yes on the Ford T/P heads and I think Pontiac may have made the same type head for the little T/A 303, or was it one for Ford's early 5.0 T/A motor??

FUNNY, but do you notice the word "OVAL" b/c I always figured that ovals would run better then both rects. and rovals when even at the same port cc size due to the smoother more rounded port shape, so it must be so or the new big head woulda been a rect. port design, imho!!!

pdq67!!!

:eek: those are some wicked flow numbers. How long would the springs last on the street with .900" lift?

Pontiac did make a tunnel port head with the pushrods going right down through the center of the intake port. They were the Ram Air V's. PDQ called it. The T/A 303 intended for scca racing. It didn't work very well.
There was also RA V 400's that were inteded to be an option on the '69 GTO as a drag racing engine. That didn't materialize and about 80 or so might have been crated up and sold to private buyers.

Originally posted by von:
</font><blockquote>quote:</font><hr />Originally posted by BillsCamino:
Reminds me of the old 427 "tunnel port" Ford FE heads... ;) Were those the ones that had big round intake ports with pushrod tubes running right down through the middle of each one? </font>[/QUOTE]Right! The pushrod actually passed thru the port on the intake manifold. Ports were nearly round...2.17" X 2.34" with a 2.25" valve.
http://www.wrljet.com/fordv8/images/427tp-intake-2.jpg
http://www.wrljet.com/fordv8/images/427tp-intake-port.jpg

More BBC oval port heads available ...

http://www.profilerperformance.com/bbc-heads-174.html

RE: Ford FE tunnel port heads. I remember at the '67 Nationals (my first), Ford had some '67 tunnel port 427 Fairlanes there in SS/C class. Bill Jenkins kicked their butts in SS/C with his 396-375 Camaro and went on to win SS Eliminator. The tunnel ports were probably TOO big.

Actually they finally figured the the medium riser was the best of all the race FE heads except the cammer stuff.

Finally something that will support the .900 lift cam in my car :rolleyes: :eek: :D

if im not mistaken with those heads you have to run all the valve train stuff that you would on a set of Big Cheifs, which just means BIG $$$ parts. Its not a bad thing, but something to consider.


Bob

Your right , these are Big Duke type heads and pbly will need the correct valve train , I just thought interesting to post the info as I had been on phone with Brodix getting advice on intakes for my BB-O heads and rep got into new Oval port head just released for serious BBC with bores over 4.50 had an interresting discussion on the intakes and heads GM installs on their 572 crate motor FWIW and the dyno results of different intakes with the BBO head.

Your right , these are Big Duke type heads and pbly will need the correct valve train , I just thought interesting to post the info as I had been on phone with Brodix getting advice on intakes for my BB-O heads and rep got into new Oval port head just released for serious BBC with bores over 4.50 interesting to see at that size oval port velocity is still the way to go ......these do move alot of air.

Had an interresting discussion on the intakes and heads GM installs on their 572 crate motor. Also tuned me into the dyno results of different intakes with the BBO head.

Geez not sure what I did but pls delete last two repeated posts

Originally posted by CDN SS:
I just thought interesting to post the info as No doubt about it, awesome numbers, from an "oval port head". the parts that are coming out now are making it easier & easier to make very nice HP numbers.

Bob

Gee, ovals even big enough for me! tongue.gif