G5x3 Cam
I find it really interesting that so many companies make that profile now that I see it. My Thompson Motorsports cam is very similar to this as well.
612/612 lift
236/242 duration
113+4 LSA
612/612 lift
236/242 duration
113+4 LSA
Well like I said, it's a good profile with good valve events. Everyone who works with the car eventually arrives at those specs or close to the for a good overall cam.
If you extend the exhaust duration out to 246, it gets even better. When I had this EPS cam ground, that's actually how Geoff prefers it: 234/246. I think Martin now has that profile available too. Kinda wish I had gone that route to see what it could do...
If you extend the exhaust duration out to 246, it gets even better. When I had this EPS cam ground, that's actually how Geoff prefers it: 234/246. I think Martin now has that profile available too. Kinda wish I had gone that route to see what it could do...
Staging Lane
Joined: Oct 2011
Posts: 50
Likes: 0
I ran a G5x for 2 years, not a single problem with it. The cam made great power and went 11.4 in a 6 speed on DRs and a 10 bolt. It had zero problems idling, running with the AC on or on super hot days. I'm sure the 6 speed helped that along, but it was a great cam.
Sorry to bump a thread that's a few days old but I figured I'd update this for anyone doing research in the future..
I've now had my 114LSA G5x3 tuned, and its a completely different car. No cam surge/bucking at all. A lot more low end torque too. Don't get me wrong, it's still a big cam, and is never going to be a torque monster. But all in all, after having it tuned I'm satisfied. Before the tune power steering would stall out my car. Now it holds an idle perfectly, and drives nice and smooth. Also it dynode at 404/382 with stock heads and harmonic balancer.
I've now had my 114LSA G5x3 tuned, and its a completely different car. No cam surge/bucking at all. A lot more low end torque too. Don't get me wrong, it's still a big cam, and is never going to be a torque monster. But all in all, after having it tuned I'm satisfied. Before the tune power steering would stall out my car. Now it holds an idle perfectly, and drives nice and smooth. Also it dynode at 404/382 with stock heads and harmonic balancer.
Last edited by 1994_383_Z28; Nov 15, 2013 at 07:54 AM.
Throw some heads on that thing and you'll be knocking on 450-460rwhp... then depends on how much more money you want to spend to see how high you can go. Plus when you go with heads, you can mill them down to bump up compression, which will help it drive better and bring back some of the low-end lost.
Throw some heads on that thing and you'll be knocking on 450-460rwhp... then depends on how much more money you want to spend to see how high you can go. Plus when you go with heads, you can mill them down to bump up compression, which will help it drive better and bring back some of the low-end lost.
As far as having the heads milled I don't think you can with this cam. As it is PTV is tight, and if you milled the heads you'd definitely have to fly-cut your pistons and even then it might be tight.. I'm honestly not sure. I've never heard of anyone running milled heads with this cam.
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Verdad Gallardo LG used to do it with the AFR 205s... You have stock PTV with those at 66... mill to 62 and it should still fit. Will be tight tho.
And I'm running a variant of that cam on a much tighter LSA/ICL and 62cc heads with 2.04" valves. And I flycut. It's not a big deal.
And I'm running a variant of that cam on a much tighter LSA/ICL and 62cc heads with 2.04" valves. And I flycut. It's not a big deal.
LG used to do it with the AFR 205s... You have stock PTV with those at 66... mill to 62 and it should still fit. Will be tight tho.
And I'm running a variant of that cam on a much tighter LSA/ICL and 62cc heads with 2.04" valves. And I flycut. It's not a big deal.
And I'm running a variant of that cam on a much tighter LSA/ICL and 62cc heads with 2.04" valves. And I flycut. It's not a big deal.
Do you think I'd make more power with stock 205's, or ported 243's? 243's would definitely be the cheaper route.
I had AFR 205's at 59cc and a 229/236 and made my numbers in my sig. That was with a GM MLS gasket. I'd bet there was more in it with a Cometic .040
And I'd be worried that they're warped or something.. Call me paranoid I guess..
Teching In
Joined: Sep 2013
Posts: 29
Likes: 0
From: Pasadena, CA
I'm running the G5X3 in my LS2. It's a fairly aggressive CAM but very manageable.
I daily drive my Corvette with one installed without any issue. Don't get me wrong, it lopes, shakes and doesn't like low RPM. However, this is my first manual car and I've been able to drive it just fine.
Like others have said, it's all in the tuning.
I daily drive my Corvette with one installed without any issue. Don't get me wrong, it lopes, shakes and doesn't like low RPM. However, this is my first manual car and I've been able to drive it just fine.
Like others have said, it's all in the tuning.
I'm running the G5X3 in my LS2. It's a fairly aggressive CAM but very manageable.
I daily drive my Corvette with one installed without any issue. Don't get me wrong, it lopes, shakes and doesn't like low RPM. However, this is my first manual car and I've been able to drive it just fine.
Like others have said, it's all in the tuning.
I daily drive my Corvette with one installed without any issue. Don't get me wrong, it lopes, shakes and doesn't like low RPM. However, this is my first manual car and I've been able to drive it just fine.
Like others have said, it's all in the tuning.
