G5x4 cam first impressions.
Thread Starter
On The Tree
Joined: Aug 2004
Posts: 153
Likes: 0
G5x4 cam first impressions. the x4 is probobly the cam that people want the most info on, and there isnt a lot to be had on it so here goes/
so my car is done finnaly and the x4 is in it.
car is a 2000 SS m6
initial thought. wtf? it idles....... and it sounds tame... less lopey than my 224 on a 112 but with more throat to it?
the car is on pretty much a break in tune right now, running very rich.
on the road: cam surge? minimal.
gear: 3.73 definitely needs more
gas mileage: did 274 miles off a fresh tank today, thats driving it at all kinds of rpms NOT in 6th gear on the highway at 2k.
performance: 1st and 2nd gear are wicked, 3rd is alright then it falls on its face in 4th. definitely needs a good tune. ill update this post after that gets taken care of.
would i recommend daily driving it?
Absolutely under these conditions:
- Have the money or skill tools and time to check and change the valvesprings often.
- tall gears are a MUST
- have the supporting mods to handle the cam, and dont complain on here when you break your 10bolt.
- Valve reliefs or flycut, DONT try to run this in an m6 without.
Ill post sound clips this afternoon for those of you interested
so my car is done finnaly and the x4 is in it.
car is a 2000 SS m6
initial thought. wtf? it idles....... and it sounds tame... less lopey than my 224 on a 112 but with more throat to it?
the car is on pretty much a break in tune right now, running very rich.
on the road: cam surge? minimal.
gear: 3.73 definitely needs more
gas mileage: did 274 miles off a fresh tank today, thats driving it at all kinds of rpms NOT in 6th gear on the highway at 2k.
performance: 1st and 2nd gear are wicked, 3rd is alright then it falls on its face in 4th. definitely needs a good tune. ill update this post after that gets taken care of.
would i recommend daily driving it?
Absolutely under these conditions:
- Have the money or skill tools and time to check and change the valvesprings often.
- tall gears are a MUST
- have the supporting mods to handle the cam, and dont complain on here when you break your 10bolt.
- Valve reliefs or flycut, DONT try to run this in an m6 without.
Ill post sound clips this afternoon for those of you interested
Launching!
Joined: Jul 2002
Posts: 285
Likes: 0
From: Port Saint Lucie,Fl
I am considering this cam, I currently have an G5x2 and want a little more along with some AFR heads according to Lg it should be worth up to 20 Hp more than the x2. My valvetrain is not noisy and the idle is very tame with a good tune and drilled out TB.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by guinness2
I am considering this cam, I currently have an G5x2 and want a little more along with some AFR heads according to Lg it should be worth up to 20 Hp more than the x2. My valvetrain is not noisy and the idle is very tame with a good tune and drilled out TB.
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Launching!
Joined: Jul 2002
Posts: 285
Likes: 0
From: Port Saint Lucie,Fl
I dunno but 20hp for $450 sounds good to me. I have heard the x4 is not considerably more radical than the x2
Originally Posted by PREDATOR-Z
IMO X2 to X4 is not worth it. I would just slap on a massaged AFR set (TEA) to fit your X2.
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Uhm, who told you it wasn't more radical than the X2? I can tell you it's more radical than my X3, which is more than the X2 
This cam is BIG and you can tell, after driving it around more now, been 4 days since I installed it, it will let you know it's there down below 1500rpm, surges some. I don't care about the surge, it still drives amazing, but be prepared to never cruise through a parking lot at 900 rpm in first or second, more like gas, clutch in, clutch out, gas, clutch in, etc, etc.
This cam is BIG and you can tell, after driving it around more now, been 4 days since I installed it, it will let you know it's there down below 1500rpm, surges some. I don't care about the surge, it still drives amazing, but be prepared to never cruise through a parking lot at 900 rpm in first or second, more like gas, clutch in, clutch out, gas, clutch in, etc, etc. 
Originally Posted by dazman
how can this cam not lope as much as a 224 on 112.??? the valve overlap is significantly greater on this cam....
mike
mike
Launching!
Joined: Jul 2002
Posts: 285
Likes: 0
From: Port Saint Lucie,Fl
I never said it wasn't more radical , just not considerably more
Originally Posted by Orange Peel
Uhm, who told you it wasn't more radical than the X2? I can tell you it's more radical than my X3, which is more than the X2 This cam is BIG and you can tell, after driving it around more now, been 4 days since I installed it, it will let you know it's there down below 1500rpm, surges some. I don't care about the surge, it still drives amazing, but be prepared to never cruise through a parking lot at 900 rpm in first or second, more like gas, clutch in, clutch out, gas, clutch in, etc, etc.
This cam is BIG and you can tell, after driving it around more now, been 4 days since I installed it, it will let you know it's there down below 1500rpm, surges some. I don't care about the surge, it still drives amazing, but be prepared to never cruise through a parking lot at 900 rpm in first or second, more like gas, clutch in, clutch out, gas, clutch in, etc, etc.
Originally Posted by guinness2
I never said it wasn't more radical , just not considerably more
I also have recently installed the x4 and love it. I haven't got it on the dyno to see the difference over the x3, but the swap was worth it. This is not a mild cam by any means. From what I can tell and have heard this is the LARGEST cam that may fit without flycutting. I say this because it is that close. Just adding my .02
-matt
-matt
Originally Posted by xttc2000
the x4 is probobly the cam that people want the most info on, and there isnt a lot to be had on it so here goes/
so my car is done finnaly and the x4 is in it.
car is a 2000 SS m6
initial thought. wtf? it idles....... and it sounds tame... less lopey than my 224 on a 112 but with more throat to it?
the car is on pretty much a break in tune right now, running very rich.
on the road: cam surge? minimal.
gear: 3.73 definitely needs more
gas mileage: did 274 miles off a fresh tank today, thats driving it at all kinds of rpms NOT in 6th gear on the highway at 2k.
performance: 1st and 2nd gear are wicked, 3rd is alright then it falls on its face in 4th. definitely needs a good tune. ill update this post after that gets taken care of.
would i recommend daily driving it?
Absolutely under these conditions:
- Have the money or skill tools and time to check and change the valvesprings often.
- tall gears are a MUST
- have the supporting mods to handle the cam, and dont complain on here when you break your 10bolt.
- Valve reliefs or flycut, DONT try to run this in an m6 without.
Ill post sound clips this afternoon for those of you interested
so my car is done finnaly and the x4 is in it.
car is a 2000 SS m6
initial thought. wtf? it idles....... and it sounds tame... less lopey than my 224 on a 112 but with more throat to it?
the car is on pretty much a break in tune right now, running very rich.
on the road: cam surge? minimal.
gear: 3.73 definitely needs more
gas mileage: did 274 miles off a fresh tank today, thats driving it at all kinds of rpms NOT in 6th gear on the highway at 2k.
performance: 1st and 2nd gear are wicked, 3rd is alright then it falls on its face in 4th. definitely needs a good tune. ill update this post after that gets taken care of.
would i recommend daily driving it?
Absolutely under these conditions:
- Have the money or skill tools and time to check and change the valvesprings often.
- tall gears are a MUST
- have the supporting mods to handle the cam, and dont complain on here when you break your 10bolt.
- Valve reliefs or flycut, DONT try to run this in an m6 without.
Ill post sound clips this afternoon for those of you interested
Originally Posted by nasty ss
I also have recently installed the x4 and love it. I haven't got it on the dyno to see the difference over the x3, but the swap was worth it. This is not a mild cam by any means. From what I can tell and have heard this is the LARGEST cam that may fit without flycutting. I say this because it is that close. Just adding my .02
-matt
-matt
