A little cylinder head help needed.

[Dark_5.0]

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]

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

[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

[Dark_5.0]

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]

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]

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."

[~The Jester~]

I'm a BIG Canfield fan, so I can't be 100% unbiased here.

BUT, I'd be VERY surprised if an untouched set of TF's outflowed an unshrouded set of Canfield's.

Just my $.02!

[Dark_5.0]

Originally Posted by ~The Jester~

I'm a BIG Canfield fan, so I can't be 100% unbiased here.

BUT, I'd be VERY surprised if an untouched set of TF's outflowed an unshrouded set of Canfield's.

Just my $.02!

Yeah thats what I figure also. As soon as my ARP head studs show up I am bolting those bad boys on.

[rwhite65]

I knew the Jester would pipe in on that one.....just took him longer then I thought it would

[~The Jester~]

Originally Posted by rwhite65

I knew the Jester would pipe in on that one.....just took him longer then I thought it would

I'm a slacker, what can I say? LOL

You guys keep your eyes peeled for Canfield's new Avenger Series heads. I hear from a reliable source that they're pretty killer!

[andy669]

I'm not sure how anyone could pick a cylinder head for a particular application without knowing what the camshaft is, and I could share all kinds of stories about 'ported' heads that flow worse than what they did out of the box, but I digress.

With the limited information, my thinking that they will both perform about the same is about as silly as thinking the Canfields will be faster because they say "Canfield", and because they are 'ported'. IMO, theres not enough info to make a case for either.

Andy

[Dark_5.0]

Originally Posted by andy669

I'm not sure how anyone could pick a cylinder head for a particular application without knowing what the camshaft is, and I could share all kinds of stories about 'ported' heads that flow worse than what they did out of the box, but I digress.

With the limited information, my thinking that they will both perform about the same is about as silly as thinking the Canfields will be faster because they say "Canfield", and because they are 'ported'. IMO, theres not enough info to make a case for either.

Andy

Abbot Racing Heads ported my heads and did the valve job. They are very well known in West Texas. They have a 3.8 V6 all motor full weight 98 firebird that runs low 12's at this shitty altitude (4000+FT) so I think there port work is for the better.

I am running the Z303 cam in a 10 to 1 331 stroker with an Edelbrock performer RPM II intake and 1 3/4 longbtube headers.

I fully intend on popping wheelies and running mid 11's here in a couple months.

Thanks for yalls help,