AFR Head Flow Numbers (Ported) ??
11-13-2002, 12:17 PM
#1
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Join Date: Feb 2001
Location: Lethbridge, Alberta
Posts: 124
AFR Head Flow Numbers (Ported) ??
What kind of numbers are people getting with good port jobs on AFR LT4 Heads? I'm thinking of running one of the new Comp Cams Xtreme grind hydraulic rollers and staying under the 7000rpm limit of the pcm. So now, what would anyone recommend for size? It'll be a 410ci. Thanks guys.
AFR LT4 210cc
AFR LT4 220cc
AFR LT4 227cc
P.S. I realize the 227 is probably too big for a hydraulic, but just in case someone HAS done it. I see that there IS a CC Xtreme with 248/252 dur@.050, so it's not totally out of the realm of possibilities, is it?
I posted on the Tech board but the only respnse was from 4drLT4. If you'd like to email me privately with any info, that would be cool to.
AFR LT4 210cc
AFR LT4 220cc
AFR LT4 227cc
P.S. I realize the 227 is probably too big for a hydraulic, but just in case someone HAS done it. I see that there IS a CC Xtreme with 248/252 dur@.050, so it's not totally out of the realm of possibilities, is it?
I posted on the Tech board but the only respnse was from 4drLT4. If you'd like to email me privately with any info, that would be cool to.
Last edited by Tweaked Zed; 11-13-2002 at 12:19 PM.
11-13-2002, 05:55 PM
#2
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Join Date: Jul 2001
Location: Langley B.C. Canada
Posts: 1,742
Race Ready Competition Package
210 cc 210 cc
.300-197in 145exh .300-201in 150exh
.400-245in 185exh .400-247in 190exh
.500-273in 205exh .500-276in 207exh
.550-277in 210exh .550-282in 213exh
.600-282in 215exh .600-288in 220exh
.650-283in 218exh .650-293in 225exh
.700-285in 220exh .700-297in 230exh
220 cc 220 cc
.300-190in 145exh .300-198in 150exh
.400-248in 185exh .400-255in 190exh
.500-280in 205exh .500-290in 207exh
.550-284in 210exh .550-295in 213exh
.600-286in 215exh .600-298in 220exh
.650-288in 218exh .650-300in 225exh
.700-292in 220exh .700-303in 230exh
227 cc 227 cc
.300-192in 145exh .300-207in 150exh
.400-250in 185exh .400-258in 190exh
.500-288in 205exh .500-294in 207exh
.550-290in 210exh .550-298in 213exh
.600-292in 215exh .600-302in 220exh
.650-295in 218exh .650-305in 225exh
.700-295in 220exh .700-309in 230exh
The Race ready version has 70% CNC ported intakes and the Competition package has 100% CNC ported intakes. Both the 210cc and 220cc have 2.080in and 1.600exh valves and the 227cc has 2.100in and 1.600exh valves.
Those are all numbers from the AFR catalog. You can also buy any of the heads "as cast" and port them yourself or get someone else to maybe someone can get better numbers than what is above.
I plan on buying the 220cc for a 396ci
210 cc 210 cc
.300-197in 145exh .300-201in 150exh
.400-245in 185exh .400-247in 190exh
.500-273in 205exh .500-276in 207exh
.550-277in 210exh .550-282in 213exh
.600-282in 215exh .600-288in 220exh
.650-283in 218exh .650-293in 225exh
.700-285in 220exh .700-297in 230exh
220 cc 220 cc
.300-190in 145exh .300-198in 150exh
.400-248in 185exh .400-255in 190exh
.500-280in 205exh .500-290in 207exh
.550-284in 210exh .550-295in 213exh
.600-286in 215exh .600-298in 220exh
.650-288in 218exh .650-300in 225exh
.700-292in 220exh .700-303in 230exh
227 cc 227 cc
.300-192in 145exh .300-207in 150exh
.400-250in 185exh .400-258in 190exh
.500-288in 205exh .500-294in 207exh
.550-290in 210exh .550-298in 213exh
.600-292in 215exh .600-302in 220exh
.650-295in 218exh .650-305in 225exh
.700-295in 220exh .700-309in 230exh
The Race ready version has 70% CNC ported intakes and the Competition package has 100% CNC ported intakes. Both the 210cc and 220cc have 2.080in and 1.600exh valves and the 227cc has 2.100in and 1.600exh valves.
Those are all numbers from the AFR catalog. You can also buy any of the heads "as cast" and port them yourself or get someone else to maybe someone can get better numbers than what is above.
I plan on buying the 220cc for a 396ci
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