FAST and AFR225s
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FAST and AFR225s How close are the ports on these together? Is there a lot of port matching that needs to be done (on the fast) or ??? does it matter that much?
Actually, there's lots of gains to be had from port matching. Tony Mamo just ported my (soon to be installed) FAST 90. He picked up 5-8 cfm (at the head) by port-matching the runners. That's like bolting up a head that flows 5-8 cfm better once it's done. I'd post pictures, but I don't want to be giving away Tony's secrets. Feel free to PM him if you want him to do it.
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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.
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.
Here the #1 intake port. The intake is only sitting on top of the heads which are not torqued down yet. The Fast sidewalls are maybe .030" too narrow, so not much work at all to even them up. My concern is down at the bottom corners.
You could either fill the Fast corners in a bit (not a good idea, if what ever you filled it with came loose) or port match the heads a bit. Thats a scarey thing to do to such expensive heads.
I didn't know Tony was offering this service. I must hound him now!
Tooonnnnyyyyyyyyyy its meeeee agaiiiiiin
I've also included another pic with is the Intake/TB port of the fast intake. Searching the forums, I've found where someone asked if anyone has smoothed that little rige down, but he never got an answer, so maybe someone can chime in here.
I really wish the stock LS1/6 intakes came apart like this, It would be awesome to get in there like you can with the FAST intakes.
You could either fill the Fast corners in a bit (not a good idea, if what ever you filled it with came loose) or port match the heads a bit. Thats a scarey thing to do to such expensive heads.
I didn't know Tony was offering this service. I must hound him now!
Tooonnnnyyyyyyyyyy its meeeee agaiiiiiin
I've also included another pic with is the Intake/TB port of the fast intake. Searching the forums, I've found where someone asked if anyone has smoothed that little rige down, but he never got an answer, so maybe someone can chime in here.
I really wish the stock LS1/6 intakes came apart like this, It would be awesome to get in there like you can with the FAST intakes.
Last edited by ROCNDAV; Aug 1, 2005 at 11:10 PM.
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Originally Posted by mr2guru
A little OT for the thread but is there any benefit to hand finishing/polishing out the CNC markings in the runners of AFRs heads?
And if done improperly can adversely effect the flow of the head. That's some of the finest CNC work on the planet....display it proudly!
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From: Kansas City Area
Originally Posted by Tony Mamo @ AFR
In a word....No
And if done improperly can adversely effect the flow of the head. That's some of the finest CNC work on the planet....display it proudly!
And if done improperly can adversely effect the flow of the head. That's some of the finest CNC work on the planet....display it proudly!
Can you comment on the FAST manifold pics?