cigarette39

HI IS THERE ANYONE USING CANFIELD HEADS ON THERE MOTORS. ARE THEY AS GOOD AS THEY CLAIM THEY ARE? AND THE GOOD AND BAD ABOUT THEM.

THANKS IN ADVANCE

DanL

for the money they're not bad, but a stock Dart Pro 1 big block head outflows it and has a better exhaust to intake flow ratio than any stock aluminum head out there. Give me the part number and I'll post the flow of each.

LPBoater

I just [put Canfield heads on my HP 500's. It's too cold in Cinci for a test, but I'll post results soon. Two friends hace used them succesfully and are happy with them. One of them is merlin540 on this board - hopefully he'll check this thread.

jspeeddemon

A friend used a set of 310cc Canfield heads on his marine 605 and the exhaust flow right out of the box was 295 at .700, untouched, I know for sure that Dart's are not that good. check the flow sheets posted on their site for out of the box to verify. They worked the intakes hard to get the flow up to make an acceptable intake to exhaust flow ratio, they felt like 80% would be correct for their application. The motor responded well with the head combination making 755 hp at 5800 rpm, and boat loads of torque from 3000 all the way to 5000. This was on a 9.5:1 compression motor, single carb naturally aspirated. I would guess that is right in the ballgame, at least with a standup triple. The new 350 cc Canfield's flow the same on the exhasust and much better on the intake out of the box, check CANFIELDHEADS.COM, for the exact numbers. I know because I just purchased a set and sent them to Jim Valako. The board seems very high ion his ability. I'll post the results.

OutlawMark

I installed Canfield heads ,HP500 cam,and a team G intake on my 502 and picked up 10MPH. I am impressed!!

jspeeddemon

Did you use the 310's?

cigarette39

MY ENGINES ARE 580CI, 9.5:I COMP, MERLIN SINGLE PLANE REWORKED ON BY WILSON MANFOLDS, 262/272 DUR .714/.714 LIFT 110 LOBE. WHICH SET WOULD YOU RECOMMEND.

THANKS.

OutlawMark

Yes,I used 310cc and heads were milled to 9.25 comp ratio and no other Headwork.Intake was port matched and also used comp cams pro magnum roller rockers.

DanL

here are the Dart out of the box numbers. One thing you should know is that I pay 525.for the finished casting. Canfields have a 114cc chamber vs the Dart 119. Add the smaller intake ports and the higher compression from the smaller chamber and your talking about a 502 head. On anything more than 540ci, you're asking to detonate a motor. This is my experience and I'm not shooting anyone down or asking for a rebuttal. I have a pair of 805hp 572 aluminum engines with Dart Big Chief heads,405 intake ports and 88cc chambers, but it lives on 104 octane.

36spectre

Spend the money and buy EPD. Nothing else compares with their knowledge or workmenship. That's why Merc uses them to design their heads for their race program.