I AM IN A PROCESS OF BUILDING A 13.5 COMP 572 AND IN A HEAD DILLEMA THE CAR WEIGHT IS 3400 RACE WEIGHT BACKED HALF 80 MALIBU THE CAM IS A LUNATI HAROLD GRIND SOLID ROLLER 318-324-282-292-725-725
110 LC THIS MOTOR WILL BE ON GAS
MY CAM CHOICES ARE DOWN TO AFR 335 FULL CNC BRODIX B2XTRA CNC AND THE DART 335 PRO ONE CNC
DOES ANYBODY HAVE ANY THOUGHTS ON THESE THREE HEADS

Originally posted by sbchevy:
I AM IN A PROCESS OF BUILDING A 13.5 COMP 572 AND IN A HEAD DILLEMA THE CAR WEIGHT IS 3400 RACE WEIGHT BACKED HALF 80 MALIBU THE CAM IS A LUNATI HAROLD GRIND SOLID ROLLER 318-324-282-292-725-725
110 LC THIS MOTOR WILL BE ON GAS
MY CAM CHOICES ARE DOWN TO AFR 335 FULL CNC BRODIX B2XTRA CNC AND THE DART 335 PRO ONE CNC
DOES ANYBODY HAVE ANY THOUGHTS ON THESE THREE HEADS =
My opinion for your deal,, AFR 357 hands down ;)
Same price as the 335, much better match for your engine.

BTW, with the AFR you do not need 10 degrees of spread unless you are planning nitrous, they have an outstanding exhaust port.

If you send me an email I can probably save you a few dollars on either the AFR or Brodix ;)

MIKE ILL PROBALLY GIVE YOU A CALL IN THE NEXT DAY OR TWO
BUT WHY DO YOU LIKE THE LARGER HEAD OVER THE SMALLER HEAD
THE CAR IS STILL PRETTY HEAVY?

Originally posted by sbchevy:
MIKE ILL PROBALLY GIVE YOU A CALL IN THE NEXT DAY OR TWO
BUT WHY DO YOU LIKE THE LARGER HEAD OVER THE SMALLER HEAD
THE CAR IS STILL PRETTY HEAVY? =
572 inches, 13.5 compression & a cam that will make power easily to 8000+ will love a big port.
It will make more power :D

I would do one of these:

The DART 345 heads and then have them professionally ported.

The DART 355 CNC heads and then bolt them on.

I really like the dart heads, and have talked to many Super Comp racers and they all have said that DART is the way to go.

I recommend Dart. Tony Mcafee is the man when it comes to Dart heads. He races IHRA, and has worked for John Lingenfelter. I could give you his # at work if you are interested.

Dart 355s, give Reher Morrison a call or look at e-bay. Got mine there, brand new, with the Manley spring upgrade capable of .880 lift, for less than $2700..

Good luck.

Don't spend a damn dime on porting unless you do it yourself. Buy the flow you need upfront. Way cheaper. You've been warned.

i am leaning towards the 335 cnc
i just talked to a guy on saturday with a 572 357 afrs and was not happy he said he wished he went with brodix but did not specify why or anything his ride was a 2000lb red with him in it 7.90 et on the motor the motor was a complete long block from scott shafiroff i think he was thinking it should have run better numbers but did not specify how much better

a another guy i race with has 100 over 454 with the plain jane 325 darts in a 2800 lb malibu and runs 9.7-9.8s and he is happy with them

plus i do not think there is a shaft rocker system out yet for the afrs is there

sbchevy, Yes, they do have shaft rockers for the AFR's as well as all the other heads. Personally I'm with Mike on the AFR heads. They flow better numbers than any conventional head currently on the market. As for the runner size, I can't help you there. You are running a big inch motor, so you need a big flowing head, just how big I don't know. FYI, I'm in the building stages, but I'm running 357 cnc heads on a procharged 540. Another FYI, to get the great intake to exhaust flow ratio that the AFR's are noted for you must run a tulip shaped exhaust valve. Hope this helps.

Rob

Just for info Tony puts the tulip exhaust valve in all AFR heads standard from 325 & up.

They are all excellent heads but I feel the AFR is the best & most efficient conventional out of the box head going at this time.

As for size, I think the 357AFR or 355BB2 would be better but suggest you call AFR & talk to Tony & call Brodix & talk to either of the Jeff's.
Tell any of them I said to give them a call & see what they think regarding port size on your engine rather than relying on other racers who may or may not have their combinations optimized.

It's a pretty good sized investment so you probably don't want to do it twice :D

Then give me a hollar & I will see what I can do ;)