gsc 272/272 profile and grind question
Nov 26, 2008, 09:44 AM
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gsc 272/272 profile and grind question
Hi i was just wondering what the specs were of the 272/272s that i have had in my car. i purchased them in very early 2006 (march) im not sure if any other grinds were updated of the 272 before the s1's came out
like lobe lift, duration, centerline, all that good stuff. most appreciated greg
btw i dyno'd for the first time on a regular reading dyno (dyno dynamics = boo)
i was tuned back in dec of 06 for full bolt ons and cams and then a few months after i installed an evo9 turbo and was never tuned. i was actually detuned by friends to be safe till i got a tune. they took timing out and made it richer. so technically im untuned and detuned.
either way i put down 350whp and 330 tq on 23.5 psi on a mustang dyno. it reads like a dynojet. everyone with full bolt on srt's were dynoing in the 280-300whp range and an fpgreen pump gas sti dyno'd 344whp so im fairly sure it's calibrated to read like a dynojet.
anyhow so these old as dirt cams of yours still kicked some a$s. i put down the most of any stock turbo'd car that day at turbochargers. com here in houston
like lobe lift, duration, centerline, all that good stuff. most appreciated greg
btw i dyno'd for the first time on a regular reading dyno (dyno dynamics = boo)
i was tuned back in dec of 06 for full bolt ons and cams and then a few months after i installed an evo9 turbo and was never tuned. i was actually detuned by friends to be safe till i got a tune. they took timing out and made it richer. so technically im untuned and detuned.
either way i put down 350whp and 330 tq on 23.5 psi on a mustang dyno. it reads like a dynojet. everyone with full bolt on srt's were dynoing in the 280-300whp range and an fpgreen pump gas sti dyno'd 344whp so im fairly sure it's calibrated to read like a dynojet.
anyhow so these old as dirt cams of yours still kicked some a$s. i put down the most of any stock turbo'd car that day at turbochargers. com here in houston
Jan 9, 2009, 05:51 AM
#3
I'm rocking the old skool GSC cams as well; can you say 264/272's. They make great power still and I have high hopes for the S2's I have sitting in the garage.
Greg,
If you could provide the specs for the 264's, 272's , and 280's I would find it useful as well to see what I'm gaining by going bigger.
Greg,
If you could provide the specs for the 264's, 272's , and 280's I would find it useful as well to see what I'm gaining by going bigger.
Jan 20, 2009, 04:57 AM
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there were a couple of different numbers used with the 272 and 264s and we moved the CL's quite a bit as well. can you guys give me range as to when you purchased these...
the GSC 280s
10.67mm peak lift intake and exhaust
230 duration @ .040"
CL of 109 intake and 114 Exhaust
the GSC 280s
10.67mm peak lift intake and exhaust
230 duration @ .040"
CL of 109 intake and 114 Exhaust
Jan 26, 2009, 06:38 PM
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These are some #'s I've gathered from various places, need Greg's confirmation if correct though.
GSC 264 *
10.6 I/10.0 E
105°I/113°E
GSC 272 *
10.6 I/10.0 E
105°I/113°E
GSC S1
10.8 I/10.2 E
110°I/110°E
GSC S2
11.2 I/11.0 E
107°I/113°E
GSC S3
11.5 I/11.5 E
108°I/116°E
* old school GSC cam, not as good as the latest S1/2/3's but there ain't nothing wrong with them
GSC 264 *
10.6 I/10.0 E
105°I/113°E
GSC 272 *
10.6 I/10.0 E
105°I/113°E
GSC S1
10.8 I/10.2 E
110°I/110°E
GSC S2
11.2 I/11.0 E
107°I/113°E
GSC S3
11.5 I/11.5 E
108°I/116°E
* old school GSC cam, not as good as the latest S1/2/3's but there ain't nothing wrong with them
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Apr 5, 2009, 05:33 AM
#8
there were a couple of different numbers used with the 272 and 264s and we moved the CL's quite a bit as well. can you guys give me range as to when you purchased these...
the GSC 280s
10.67mm peak lift intake and exhaust
230 duration @ .040"
CL of 109 intake and 114 Exhaust
the GSC 280s
10.67mm peak lift intake and exhaust
230 duration @ .040"
CL of 109 intake and 114 Exhaust
i love my GSC 272s..... but i cant remember when i bought them.
its been about 2 years. Luis formally of Forge Motorsports put me on the phone with you guys. 
33 psi. by about 3500 RPMs
Last edited by Viciouslord; Apr 5, 2009 at 05:39 AM.
Apr 6, 2009, 06:20 AM
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these are some #'s i've gathered from various places, need greg's confirmation if correct though.
Gsc 264 *
10.6 i/10.0 e
105°i/113°e
gsc 272 *
10.6 i/10.0 e
105°i/113°e
gsc s1
10.8 i/10.2 e
110°i/110°e
gsc s2
11.2 i/11.0 e
107°i/113°e
gsc s3
11.5 i/11.5 e
108°i/116°e
* old school gsc cam, not as good as the latest s1/2/3's but there ain't nothing wrong with them
Gsc 264 *
10.6 i/10.0 e
105°i/113°e
gsc 272 *
10.6 i/10.0 e
105°i/113°e
gsc s1
10.8 i/10.2 e
110°i/110°e
gsc s2
11.2 i/11.0 e
107°i/113°e
gsc s3
11.5 i/11.5 e
108°i/116°e
* old school gsc cam, not as good as the latest s1/2/3's but there ain't nothing wrong with them
11 i/10.5 e
107°i/113°e
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