PTV with TRak cam
Try not to think about lift and take a look at duration and LSA. It's the duration that runs you in to P to V clearance problems. When the valve is at max lift, the piston is pretty much at the bottom of the cylinder. It's the long duration that keeps the valve open when the piston is coming up that gets you into trouble. Try just looking at duration and not lift.
231@ .050", 281@ .006" intake
234@ .050", 283@ .006 exhaust
It's pretty close to an F-13 or F-14 in duration and smaller than a G5-X3 (234/242). Those fit with stock piston and unmilled stock heads. I would expect the 231/234 TRak cam would fit just fine. All you have to do is make sure you have stout enough valve springs and pushrods.
231@ .050", 281@ .006" intake
234@ .050", 283@ .006 exhaust
It's pretty close to an F-13 or F-14 in duration and smaller than a G5-X3 (234/242). Those fit with stock piston and unmilled stock heads. I would expect the 231/234 TRak cam would fit just fine. All you have to do is make sure you have stout enough valve springs and pushrods.
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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.
Thread Starter
On The Tree
Joined: May 2004
Posts: 166
Likes: 0
I am wondering which cam is going to make better low end Tq the F-13 or the Trak? It is going in a 04 GTO which weighs 3980 with me in it. My goals for the car are mid to high 11's with decent drivability. I will be adding a set of 205 AFR heads down the road to acheive this goal.
Originally Posted by Patrick G
Try not to think about lift and take a look at duration and LSA. It's the duration that runs you in to P to V clearance problems. When the valve is at max lift, the piston is pretty much at the bottom of the cylinder. It's the long duration that keeps the valve open when the piston is coming up that gets you into trouble. Try just looking at duration and not lift.
231@ .050", 281@ .006" intake
234@ .050", 283@ .006 exhaust
It's pretty close to an F-13 or F-14 in duration and smaller than a G5-X3 (234/242). Those fit with stock piston and unmilled stock heads. I would expect the 231/234 TRak cam would fit just fine. All you have to do is make sure you have stout enough valve springs and pushrods.
231@ .050", 281@ .006" intake
234@ .050", 283@ .006 exhaust
It's pretty close to an F-13 or F-14 in duration and smaller than a G5-X3 (234/242). Those fit with stock piston and unmilled stock heads. I would expect the 231/234 TRak cam would fit just fine. All you have to do is make sure you have stout enough valve springs and pushrods.
