Canfield Heads
 

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

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.

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.

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.

canfield heads
 

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

Did you use the 310's?

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.

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.

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.

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.

Like I said DanL, the numbers for the Dart are close, certainly not better than the Canfield out of the box. I have had Dart 320's and Dart 360's, and they are great heads, I currently own EPD ported Brodix heads, and a brand new set of Canfield 350 cc runner heads, I'm certainly not running Dart heads in to the ground(water). Some where along the line Dart's were the new kid on the block, we have come to know and love them. All that I am doing is giving Canfield a good chance by buying their product based on the fact of successful motor combos of friends and colleagues. Further the Canfield are available in several different chamber volumes, it is your choice, and you can get them factory CNC'd.
BIG BLOCK CHEVY - 310 c.c. RUNNER : 24.5-800-119-0
Intake Valve Size 2.25
Exhaust Valve Size 1.88
Intake Port Vol. 310
Chamber Volume 110/113/119/125

INSTRUCTIONS
TECH SHEET

All Canfield aluminum Cylinder Heads are cast from the finest A356 virgin billet, and are heat treated to a T6 condition. Canfield Heads are machined on the latest precision, computer controlled machining centers. As cast 119 c.c. chambers standard. Optional 110/113/119/125 CNC Profiled Chambers Available!



VALVE LIFT .100 .200 .300 .400 .500 .600 .700 .800
Intake Port 72 138 204 266 318 347 353 355
Exhaust Port 74 123 176 205 237 260 273 284
These are typical flow numbers at 28 inches of water measured on a SF 600 bench by an independent shop.



Racer's Pricing
Bare Cylinder heads with as cast 119 c.c. combustion chambers, 310 c.c. intake runners, Manganese bronze valve guides and cast alloy valve seats. Port entry CNC gasket matched for FEL-PRO 20-1275 intake gasket or equivalent.


$ 1,295.00/pair*

*Add $ 100.00 for optional CNC profiled chambers

Assembled Cylinder heads with as cast 119 c.c. combustion chambers, 310 c.c. intake runners, Manganese bronze valve guides and cast alloy valve seats, 2.250 stainless steel intake valves, 1.88 stainless steel exhaust valves and 1.550 dia. valve springs. Port entry CNC gasket matched for FEL-PRO 20-1275 intake gasket or equivalent. $ 1,880.00/pair*

*Add $ 100.00 for optional CNC profiled chambers

Here's the numbers for the 350 cc runner heads.

All Canfield aluminum Cylinder Heads are cast from the finest A356 virgin billet, and are heat treated to a T6 condition. Canfield Heads are machined on the latest precision, computer controlled machining centers. CNC 119 c.c. chambers standard. Optional 110/113/119/125 CNC Profiled Chambers Available!

TYPICAL OUT OF THE BOX NUMBERS
VALVE LIFT .100 .200 .300 .400 .500 .600 .700 .800 .900
Intake Port 82 176 250 313 350 367 376 380 381
Exhaust Port 76 120 175 213 256 284 309 320 322
These are typical flow numbers at 28 inches of water measured on a SF 600 bench by an independent shop. Flow numbers are with pipe.



EXAMPLE OF MILDLY PORTED HEADS
VALVE LIFT .100 .200 .300 .400 .500 .600 .700 .800 .900
Intake Port 77 156 229 302 349 380 398 406 409
Exhaust Port 74 123 176 205 237 260 273 284 284
These are typical flow numbers at 28 inches of water measured on a SF 600 bench by an independent shop. Flow numbers are without pipe.



Racer's Pricing
Bare Cylinder heads with CNC profiled 110, 113,119 or 125 c.c. combustion chambers, 350 c.c. intake runners, Manganese bronze valve guides and cast alloy valve seats. Port entry CNC gasket matched for FEL-PRO 20-1275 intake gasket or equivalent.


$ 1,495.00/pair

Assembled Cylinder heads with CNC profiled 110, 113,119 or 125 c.c. combustion chambers, 350 c.c. intake runners, Manganese bronze valve guides and cast alloy valve seats, premium race quality 2.300 stainless steel intake valves, 1.88 stainless steel exhaust valves and 1.55 or 1.625 dia. valve springs. Chromemoly 10 degree locks and spring retainers. Port entry CNC gasket matched for FEL-PRO 20-1275 intake gasket or equivalent. All assemblies also include intake and exhaust bowl blending.


$ 1,995.00/pair

Thanks for the info guys. Who is EPD? do they have a website?

Thanks Again

I have flow benched all the major after market heads and to date only Canfield and Brodex have flowed per their adds. The rest were blowing smoke or flowing core boxes not castings. Doing a set of the new world bbc right now ... real tests not mfg adds. If any one is interested in the results or results for other heads we have done let me know. The Canfields simply give the most flow for the port volume also there numbers will keep going up till you go through a port wall. All others go turbulent before that happens.

Hi turbo 2256 how can I get incontact with you. Could you please send me # i can call. Thanks.

Hey Cigarette 39 I'll get you that camshaft profile for the 605, I think the guy is leaving for Daytona Bike Week, I'll see if I can get him before he takes off.

the numbers I posted for the Dart were tests by an independent head shop. As I said, my incentive is the price. The Canfields had a reputation of being thinner and lighter.

I bought two sets last winter. I am extremly happy with them. I bought the 310 runners, the 113 chambers. The Canfield tech rep lives about ten minutes from my house(I found this out when I was ordering them) He gave me a # for one of his dist. and said he would probably give me the best price.

KAAMA 82 COULD YOU POST THE # FOR THE DIST. YOU BOUGHT THE HEADS FROM. THANKS.

JimV flowed my Dart aluminum 310 PRO-1 heads right out of the box and was practically ashamed to let me see the numbers. He said what Dart was advertising and what they actually flowed were not accurate. Fully ported or even mildly ported they seem to be a good head...he got them working pretty well for me, but out of the box you won't see much difference. Testing was done @28" of water.

I know some guys who went from GM rectangle port heads to the out-of-the-box Dart 310 Pro-1's and saw no increase on the dyno or in their boats. Needless to say, for the high expectations that they had and the money they spent, they were pretty disappointed with the final results. :confused:

As I have stated before the only after market heads that have flowed as advertzedare Canfield and Brodex within 5cfm everytimeon our bench . Out of the box, factory ported or custom. Also machine work on the afore mentioned heads are is superior to the competitors.we are flowing aset of Canfields and a set of factory ported Pro 1s right now asa study results I willpublish here soon.

Turbo I just purchased a set of 350 BBC Canfield's, have you done any of those yet, and if so what kind of flow numbers did you get out of the box and worked.

I talked with JimV about those Canfield heads he's got in his shop. I stood and watched him as he flowed them right "out-of-the-box" on his Super Flo 600 air flow bench. He installed some valves in the heads withOUT a valve job on the seats (fair or not) just to say that he flowed them "out of the box" and then he did a competition valve grind on the seats and flowed them again with ONLY the competition valve grind....um, ----well, He DID say that they are thick/beefy heads, BUT they didn't even come close to the numbers that Canfield is advertising, but JimV is the expert----I'll let him elaborate on it from here.

Ran some 310's on some 502's I did a few years ago. Out of the box with a hyd roller/9.5:1 made 620 on KE's dyno. Last I heard they were still doing well.