AFR head combos ?'s
AFR head combos ?'s Combo 1:2002 SS A4-Customer has stock short block,I have installed hooker long tubes and the AFR 224/228 7.4 pushrods,I am upgrading to AFR 205's.My ?s for this is how much can I mill the heads without flycutting the pistons,what thickness head gasket to get the safest quench?
Combo 2:2002 Ram Air M6-The same AFR heads but with the Trak cam and fast 90/90.
Combo 2:2002 Ram Air M6-The same AFR heads but with the Trak cam and fast 90/90.
Last edited by marine02ss; Dec 17, 2006 at 11:39 AM.
You can mill the 205s to 59cc (.036" mill) and run a .040" Cometic gasket with the 224/228 AFR cam. That combination is part of Tony Mamo's "recipe" for making big power.
P to V is tighter with the TRak cam. You may not be able to mill .036"...maybe .020"...but you definitely want to keep the thin head gasket for tighter quench.
P to V is tighter with the TRak cam. You may not be able to mill .036"...maybe .020"...but you definitely want to keep the thin head gasket for tighter quench.
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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.
Originally Posted by Patrick G
You can mill the 205s to 59cc (.036" mill) and run a .040" Cometic gasket with the 224/228 AFR cam. That combination is part of Tony Mamo's "recipe" for making big power.
In case you haven't seen it, Patrick has experience with both grinds.
Torque coming out of my EARS! (cam change)
Originally Posted by Patrick G
You can mill the 205s to 59cc (.036" mill) and run a .040" Cometic gasket with the 224/228 AFR cam. That combination is part of Tony Mamo's "recipe" for making big power.
P to V is tighter with the TRak cam. You may not be able to mill .036"...maybe .020"...but you definitely want to keep the thin head gasket for tighter quench.
P to V is tighter with the TRak cam. You may not be able to mill .036"...maybe .020"...but you definitely want to keep the thin head gasket for tighter quench.
Most of the 59 cc heads are for the larger grinds which really need the additional static cylinder pressure and take into account the -2 cc's from the notches (flycut or from an aftermarket piston).
61 cc's is the most I recommend on pump gas....62 cc's on 92 octane or less to be safe (all of this also assumes the thinner gasket which raises CR and improves quench). At 61 cc's with an .040 gasket you have about 11.5 to one....stout for such a short cam that doessn't bleed off alot of cylinder pressure (but will make great power if you can get away with it on 93 pump fuel).
Good luck....the blue pill tastes good....LOL
Tony M.
