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Flow test of my afr 280 heads and cam questions

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Post  manofmerc December 23rd 2019, 5:48 am

I had a local shop do some work on my afr 280 heads and they wanted to flow test them .The shop is engine systems in Tucker Ga. They have been doing 460s for quite some time.Intake .200-165.9 .300-256.3 .400-319.5 .500-357.3 .600-364.4 .700-360.4 .800-358.5 .900-363.0 Exhaust .200-102.6 .300-158.5 .400-203.1 .500-241.3 .600-257.9 .700-265.8 No pipe on the exhaust .And play dough around the intake port .So how would you all cam these heads for a drag car application? With my math at .600 the ex flows 71% of the intake not to bad from what little I know .And since intake flow drops after .600 is there much need to go over .600-.650 lift there?Just wanting some different opinions and ideas .Doug santa

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Post  Goldylox_fairlane December 24th 2019, 10:34 pm

Call up Bullett cams. Those guys are easy to talk to and will give you great feedback. They will need rpm cubic inch weight...ect. I think you would be somewhere close to 700 lift. Duration and lobe sep will be dependent on usage

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Post  dfree383 December 25th 2019, 2:06 pm

Why not talk with Ted or Keith at Engine Systems?
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Post  manofmerc December 26th 2019, 5:59 am

Dave I will ask them about a camshaft mainly I just want everyone to see these flow results from an independent source .From memory they seem to be close to AFRs Hope you all had a pleasant Christmas .Doug

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Post  rmcomprandy December 26th 2019, 11:20 am

manofmerc wrote:I had a local shop do some work on my afr 280 heads and they wanted to flow test them .The shop is engine systems in Tucker Ga. They have been doing 460s for quite some time.Intake .200-165.9 .300-256.3 .400-319.5 .500-357.3 .600-364.4 .700-360.4  .800-358.5 .900-363.0 Exhaust .200-102.6 .300-158.5 .400-203.1 .500-241.3 .600-257.9 .700-265.8 No pipe on the exhaust .And play dough around the intake port .So how would you all cam these heads for a drag car application? With my math at .600 the ex flows 71% of the intake not to bad from what little I know .And since intake flow drops after .600 is there much need to go over .600-.650 lift there?Just wanting some different opinions and ideas .Doug santa

Pretty much similar to a bowl ported SCJ head.

.650" or so lift intake would probably be fine.

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Post  manofmerc December 29th 2019, 5:38 am

You know Randy I have a sft camshaft that you had ground for me .It is right at .650 lift 259-264 @.050 This should work out for me I also have another sft that is .615 lift 252-259 @.o 050 .It seems to I have a couple of options .Happy new year to all! Doug

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