grumpyvette Posted March 7, 2002 Share Posted March 7, 2002 you have got to be jokeing? heres the flow numbers performer rpm............canfield 223 cc .200......130/108..........145/105 .300......183/144..........206/146 .400......226/169..........252/184 .500......229/175..........288/203 .600......232/182..........301/219 http://www.canfieldheads.com/sbc_2600.html http://www.edelbrock.com/automotive/head_flowdata.html now the formula for figureing potential hp from head flow is flow at max cam lift x .257 x #cylinders= max hp ) so the edelbrock rpms top out at 232 x .257 x 8 = 477hp without port work but the CANFIELDS are 301 x .257 x 8 =619 hp potentially its not a fair comparison because the edelbrocks are for hot street/strip use on a 350 chevy but the canfields , while they can be used on the street are really racing type heads, now canfield does also make a street/strip head,but even that head has a 50hp advantage over the rpm heads. http://www.canfieldheads.com/sbc_2500.html but thats almost the same price as the race type and it still seriously out flows the edelbrock heads, 259 x .257 x8=533hp potentially so either way the canfields win no contest. Id get the larger canfields, true youll lose some low rpm torque with the larger ports lower air velocity at low rpms but they more than make up the differance in high rpm power by having over 140hp more potential. and just for your info a 383 spinning 6500rpm will need a head flowing about 280 cfm to fill the cylinders completely at that rpm so you can see a small head kills high rpm power. Quote Link to comment Share on other sites More sharing options...
Guest y2khayabusa Posted March 7, 2002 Share Posted March 7, 2002 WOW! what an input. Thanks for the reply. I guess that answers my question. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted March 7, 2002 Share Posted March 7, 2002 just make sure your useing a good high performance intake to match the heads like a edelbrock super victor and at least a 700cfm carb and headers ETC. if you try and stick a performer(non rpm)or stock exhaust manifolds on those heads It will strangle the air flow and the ports may even be so small they dont cover the ports in the cylinder heads, putting a low performance intake on those heads will be like tapeing your mouth and one nostril shut and trying to run the mile in record time breathing through your 1/2 of your nose, youll do just fine for about 50 ft (running or driveing) Quote Link to comment Share on other sites More sharing options...
Guest super280z Posted March 7, 2002 Share Posted March 7, 2002 dad gum grumpy you crack me up. Quote Link to comment Share on other sites More sharing options...
Guest y2khayabusa Posted March 8, 2002 Share Posted March 8, 2002 just curious of peoples opinion/knowledge on witch is a better head? The cost is only about a $100 differance. Thanks for the input........ Quote Link to comment Share on other sites More sharing options...
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