A little cylinder head help needed.

Dark_5.0 · 03-06-2007, 02:25 PM

Ok I am ready to bolt the heads on to my 331 stroker shortblock. Here is the problem. I have a set of Canfield aluminum heads that have 2.02 1.60 valves 192cc runners and flow 270cfm intake and 200cfm exhaust, and that was before I had the valves unshrouded and had a competition valve job done. I also have a set of trick flow twisted wedge heads with 2.02 1.60 valves that are untouched.

I dont know the flow numbers or the potential of the Twisted Wedge heads and want to make sure I bolt the best heads on my stroker.

Anyone have flow numbers for the twisted wedge heads?

goodyear1984 · 03-06-2007, 02:42 PM

idk what the flow numbers are but let me know if u wanna sell a set my email is mcfjnb420@yahoo.com

Rev · 03-06-2007, 05:45 PM

I'm looking at the chart that came on the box that my TFTW heads came in.

.1 intake lift.............. 63 cfm, Exhaust lift...........53 cfm
.2 ......................... 141 cfm, ........................107 cfm
.3 ......................... 205 cfm, ........................144 cfm
.4 ......................... 233 cfm, ........................171 cfm
.5 ......................... 251 cfm, ........................187 cfm
.6 ......................... 251 cfm, ....................... 193 cfm

Looks like your Canfields beat the TFTW's all to heck flow-wise. With that big of runners (192 vs. 170), be sure that you don't have too much head for your application with those Canfields.

Rev

Dark_5.0 · 03-06-2007, 06:25 PM

Quote:

Originally Posted by Rev

I'm looking at the chart that came on the box that my TFTW heads came in.

.1 intake lift.............. 63 cfm, Exhaust lift...........53 cfm
.2 ......................... 141 cfm, ........................107 cfm
.3 ......................... 205 cfm, ........................144 cfm
.4 ......................... 233 cfm, ........................171 cfm
.5 ......................... 251 cfm, ........................187 cfm
.6 ......................... 251 cfm, ....................... 193 cfm

Looks like your Canfields beat the TFTW's all to heck flow-wise. With that big of runners (192 vs. 170), be sure that you don't have too much head for your application with those Canfields.

Rev

Thanks Rev,

Wow the Canfield really out perform the trickflows at the lower lift levels.

I guess the Trickflows can go on my back up motor.

andy669 · 03-06-2007, 06:46 PM

Intake port volumes can be extremely mis-leading, as well as comparing a companys advertised flow numbers versus a shops numbers.

The TW on average has an intake port that is a full half inch shorter than most inline ford heads, making the port volume look 'low'. Comparing cross sectional area is worthwhile.

Flow numbers from bench to bench can vary alot. Theres so many different calibrations and ways to flow cylinder heads no 2 benches are the same. I've seen 30 cfm difference in some peoples numbers, from the bench that I use.

Flow them back to back on the same bench would be the best way to compare numbers. And the head that flows the best might not make the most power either.

Andy

Jeff Chambers · 03-06-2007, 10:05 PM

What Andy says. I've flowed alot of heads over the years on the same bench and haven't found the advertised numbers to be very accurate. Remember, Confusius say..."Believe only have of what you read in the magazines and be suspect of that half you do believe."

03-06-2007, 02:25 PM	#1
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	A little cylinder head help needed. Ok I am ready to bolt the heads on to my 331 stroker shortblock. Here is the problem. I have a set of Canfield aluminum heads that have 2.02 1.60 valves 192cc runners and flow 270cfm intake and 200cfm exhaust, and that was before I had the valves unshrouded and had a competition valve job done. I also have a set of trick flow twisted wedge heads with 2.02 1.60 valves that are untouched. I dont know the flow numbers or the potential of the Twisted Wedge heads and want to make sure I bolt the best heads on my stroker. Anyone have flow numbers for the twisted wedge heads? __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

03-06-2007, 02:42 PM	#2
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: A little cylinder head help needed. idk what the flow numbers are but let me know if u wanna sell a set my email is mcfjnb420@yahoo.com __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

03-06-2007, 05:45 PM	#3
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Re: A little cylinder head help needed. I'm looking at the chart that came on the box that my TFTW heads came in. .1 intake lift.............. 63 cfm, Exhaust lift...........53 cfm .2 ......................... 141 cfm, ........................107 cfm .3 ......................... 205 cfm, ........................144 cfm .4 ......................... 233 cfm, ........................171 cfm .5 ......................... 251 cfm, ........................187 cfm .6 ......................... 251 cfm, ....................... 193 cfm Looks like your Canfields beat the TFTW's all to heck flow-wise. With that big of runners (192 vs. 170), be sure that you don't have too much head for your application with those Canfields. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

03-06-2007, 06:46 PM	#5
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Re: A little cylinder head help needed. Intake port volumes can be extremely mis-leading, as well as comparing a companys advertised flow numbers versus a shops numbers. The TW on average has an intake port that is a full half inch shorter than most inline ford heads, making the port volume look 'low'. Comparing cross sectional area is worthwhile. Flow numbers from bench to bench can vary alot. Theres so many different calibrations and ways to flow cylinder heads no 2 benches are the same. I've seen 30 cfm difference in some peoples numbers, from the bench that I use. Flow them back to back on the same bench would be the best way to compare numbers. And the head that flows the best might not make the most power either. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

03-06-2007, 10:05 PM	#6
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: A little cylinder head help needed. What Andy says. I've flowed alot of heads over the years on the same bench and haven't found the advertised numbers to be very accurate. Remember, Confusius say..."Believe only have of what you read in the magazines and be suspect of that half you do believe." __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

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