AFR 225 Intake Flow - Independant test
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AFR 225 Intake Flow - Independant test
I flowed a set of AFR 225 Heads on the intake side after I cut them 0.018". Here are the results as flowed on a 4.00" bore:
0.200 - 154
0.300 - 225
0.400 - 271
0.500 - 306
0.600 - 322
The heads fell of hard after 0.600 but I would rather have the mid range number than the peak.
0.200 - 154
0.300 - 225
0.400 - 271
0.500 - 306
0.600 - 322
The heads fell of hard after 0.600 but I would rather have the mid range number than the peak.
Last edited by mikey; 02-16-2005 at 04:08 PM.
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Wow, those are good numbers. I'd like to see more on a 3.900 bore myself, but this is good info showing that they really can flow a lot of air. The .400 lift numbers are almost as high as some heads are at .600. Are you going to flow the exhaust side? Thanks!
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Those are crazy flow numbers. No wonder your new motors are making 'da power!
Great job.
Great job.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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Here's what we have seen on the AFR 225's with a 72cc chamber and 3.900" bore. These also spec'd out to have a 232cc intake runner untouched and 84cc exhaust runner. No intake and no pipe.
Intake:
.100" lift 68cfm
.150" lift 107cfm
.200" lift 151cfm
.250" lift 193cfm
.300" lift 226cfm
.350" lift 250cfm
.400" lift 272cfm
.450" lift 295cfm
.500" lift 299cfm
.550" lift 309cfm
.600" lift 315cfm
Fell off at .650" lift and beyond as Mikey stated.
Exhaust
.100" lift 46cfm
.150" lift 84cfm
.200" lift 115cfm
.250" lift 145cfm
.300" lift 176cfm
.350" lift 197cfm
.400" lift 209cfm
.450" lift 219cfm
.500" lift 225cfm
.550" lift 228cfm
.600" lift 231cfm
.650" lift 233cfm
.700" lift 234cfm
.750" lift 235cfm
Hope this helps.
Mike Norris
Intake:
.100" lift 68cfm
.150" lift 107cfm
.200" lift 151cfm
.250" lift 193cfm
.300" lift 226cfm
.350" lift 250cfm
.400" lift 272cfm
.450" lift 295cfm
.500" lift 299cfm
.550" lift 309cfm
.600" lift 315cfm
Fell off at .650" lift and beyond as Mikey stated.
Exhaust
.100" lift 46cfm
.150" lift 84cfm
.200" lift 115cfm
.250" lift 145cfm
.300" lift 176cfm
.350" lift 197cfm
.400" lift 209cfm
.450" lift 219cfm
.500" lift 225cfm
.550" lift 228cfm
.600" lift 231cfm
.650" lift 233cfm
.700" lift 234cfm
.750" lift 235cfm
Hope this helps.
Mike Norris
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I was just thinking, do you guys see the ability to improve these with some hand finishing? I mean, they are just CNC machined, correct? Surely they can flow even more with hand finishing. Just wanting your opinions.
P.S. 500th post! But really, I want to know about that, I didn't post just to get to 500.
P.S. 500th post! But really, I want to know about that, I didn't post just to get to 500.
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Matt check this thread out
https://ls1tech.com/forums/generation-iii-internal-engine/276472-yet-another-sobering-experience.html
https://ls1tech.com/forums/generation-iii-internal-engine/276472-yet-another-sobering-experience.html
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Originally Posted by matts22
I was just thinking, do you guys see the ability to improve these with some hand finishing? I mean, they are just CNC machined, correct? Surely they can flow even more with hand finishing. Just wanting your opinions.
P.S. 500th post! But really, I want to know about that, I didn't post just to get to 500.
P.S. 500th post! But really, I want to know about that, I didn't post just to get to 500.
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Thanks for the link.
I would definately like to see some hand finished AFR 225's. I thought hand finishing added midrange as well? I am looking for a setup with great under the curve power without going to a stroker (BIG $$$) so these AFR heads are looking good right now. But it will probably be a year or more before I can afford them since I still have to get full exhaust, HPtuners and wideband, rearend, etc. before cam/heads. That should give all the head porters plenty of time to mess with the AFR's. Thanks for all the info.
Originally Posted by mikey
Absolutely. I may fool around with the next set but you would sacrifice some mid range flow for higher lift with increase port volume. But there are some applications that would kill for that.
#16
Originally Posted by Mike Norris
Here's what we have seen on the AFR 225's with a 72cc chamber and 3.900" bore. These also spec'd out to have a 232cc intake runner untouched and 84cc exhaust runner. No intake and no pipe.
Mike Norris
Mike Norris
#20
Originally Posted by kumar75150
Those numbers Mikey posted are very impressive for out of the box heads.
I hope Tony is reading this...lol
I hope Tony is reading this...lol
More 225 results should be coming soon....I think we will continue to see barriers broken and new levels achieved.
Thanks Guys...