Thread: Brodix 18 or Dart, BMF 18 Degree, any advice.

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Hello, iam getting ready to purchase a pair of 18 Degree heads for my 400 sbc. This will be a 11.5 comp motor with a solid roller cam going in my 67 chevy 2. The car went 10.90s on pump gas last year and i sold the motor to a freind. Dart, BMF, and Brodix are who iam looking at. Brodix sells a 18 degree sp and std (Spred port, Standard port) exuast, the standard port will allow me to use my exsisting header while the Brodix SP, BMF and Dart will need custom headers. Has anyone used the Brodix 18 STD, BMF or Dart 18?
If so what can i expect going to the 18 Degree heads?

BILL
I HAVE USED DART & BRODIX,THE DART's SEEM TO FLOW A LITTLE BETTER ON THE EXHAUST, BUT THAT WAS ALONG TIME AGO, RICHARD MASKIN [DART] USED TO BE W/WARREN JOHNSON WHEN THEY WERE DEVELOPING THE BIG CHIEFS AND WE KNOW WHAT HAPPENED AFTER THAT. I LIKE THE BRODYS JUST AS MUCH AS THE DARTS! THEM BRODIX BOYS AINT NO JOKE EITHER,I PREFER THERE HVH1000,MANIFOLDS HANDS DOWN.AND ACCORDING TO PAT MCCARTHEY, BMF IS THE WAY TO GO, I THINK WHATS IMPERITIVE AT THIS POINT IS WHO DOES THE PORT WORK! IVE SEEN DARTS,BRODYS,& BMF's CNC PORTWORK AND THEY ARE ALL WORKS OF ART.I USE A PLACE OUT HERE CALL PST!THEY CNC THEN HAND FINISH THE HEADS W/SOME TOP SECRET VALVE STUFF. SO SINCE YOU HAVE THE STD/PRT HEADERS, GO W/THAT & JUST GET SOME GOOD PORTWORK. I THINK THEY ALL MAKE S/P SERIES. THE KEY IS TO KEEP YOUR VELOCITY HIGH W/GOOD VOLUME! VELOCITY CAN MAKE UP FOR VOLUME.SO DONT GO TO BIG,FUEL ATOMIZATION IS JUST AS IMPORTANT AS VOLUME AND VELOCITY.

Originally Posted by TT572ZZILLA

BILL
IHANDS DOWN.AND ACCORDING TO PAT MCCARTHEY, BMF IS THE WAY TO GO, STUFF. SO SINCE YOU HAVE THE S/P's GO W/THAT & JUST GET SOME GOOD PORTWORK. I THINK THEY ALL MAKE S/P SERIES.

it is Pat McCarthy and BMF is carl Foltz CFE he his the man.

Originally Posted by BillR70

Hello, iam getting ready to purchase a pair of 18 Degree heads for my 400 sbc. This will be a 11.5 comp motor with a solid roller cam going in my 67 chevy 2. The car went 10.90s on pump gas last year and i sold the motor to a freind. Dart, BMF, and Brodix are who iam looking at. Brodix sells a 18 degree sp and std (Spred port, Standard port) exuast, the standard port will allow me to use my exsisting header while the Brodix SP, BMF and Dart will need custom headers. Has anyone used the Brodix 18 STD, BMF or Dart 18?
If so what can i expect going to the 18 Degree heads?

I can tell you right now you will run faster with a set of 23 degree heads.
The reason is your comp. ratio will not support a cam that will turn the rpm's to be able to use these heads.
Now if you told me your 400 sbc has 14 to 1 as comp. ratio and your cams duration was a min. of 280 at .050 and .700+ lift then I would say go for it.
A good CNC'D 23 degree head will support 675+ hp NA.
Also this will require a piston change if you run the 18 degree heads.