? about cams
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From: cordova, Maryland
? about cams
ok first who makes the best cams for the lsj at the best price also what all should you install with cams getting ported and polished head wont to get cams too thanks for input
ZZP is your best bet. IIRC they just use COMP to grind them, so I guess you could go directly to them. But I would just give ZZP the business.
Their billet cams are made from real blanks, where most others are base circle regrinds of stock cams which would require solid lifters. Go with ZZP Billet cams and keep stock lash adjusters.
No one else really makes cams for these. I have a set of the GM Racing cams in my garage I have been trying to sell for months. I don't have the specs handy for them, though.
Their billet cams are made from real blanks, where most others are base circle regrinds of stock cams which would require solid lifters. Go with ZZP Billet cams and keep stock lash adjusters.
No one else really makes cams for these. I have a set of the GM Racing cams in my garage I have been trying to sell for months. I don't have the specs handy for them, though.
ZZP is your best bet. IIRC they just use COMP to grind them, so I guess you could go directly to them. But I would just give ZZP the business.
Their billet cams are made from real blanks, where most others are base circle regrinds of stock cams which would require solid lifters. Go with ZZP Billet cams and keep stock lash adjusters.
No one else really makes cams for these. I have a set of the GM Racing cams in my garage I have been trying to sell for months. I don't have the specs handy for them, though.
Their billet cams are made from real blanks, where most others are base circle regrinds of stock cams which would require solid lifters. Go with ZZP Billet cams and keep stock lash adjusters.
No one else really makes cams for these. I have a set of the GM Racing cams in my garage I have been trying to sell for months. I don't have the specs handy for them, though.
Thread Starter
Senior Member
iTrader: (4)
Joined: 07-23-07
Posts: 1,706
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From: cordova, Maryland
nevermind here they are
• Duration @ 0.050" lift is 247° on the intake and 249° on the exhaust
• Maximum lift is 0.499" for the intake and 0.499" on the exhaust
• Lobe centerline is 116°
• Duration @ 0.050" lift is 247° on the intake and 249° on the exhaust
• Maximum lift is 0.499" for the intake and 0.499" on the exhaust
• Lobe centerline is 116°
Joined: 12-30-07
Posts: 14,079
Likes: 197
From: NEPA
ZZP is your best bet. IIRC they just use COMP to grind them, so I guess you could go directly to them. But I would just give ZZP the business.
Their billet cams are made from real blanks, where most others are base circle regrinds of stock cams which would require solid lifters. Go with ZZP Billet cams and keep stock lash adjusters.
No one else really makes cams for these. I have a set of the GM Racing cams in my garage I have been trying to sell for months. I don't have the specs handy for them, though.
Their billet cams are made from real blanks, where most others are base circle regrinds of stock cams which would require solid lifters. Go with ZZP Billet cams and keep stock lash adjusters.
No one else really makes cams for these. I have a set of the GM Racing cams in my garage I have been trying to sell for months. I don't have the specs handy for them, though.
This sheet provides basic information regarding production camshafts used in the ECOtec engines listed
below. This information is accurate as of August, 2007. GM reserves the right to change specifications
and part numbers without notice.
Note: ECOtec Engine codes refer to the following
L61 - 2.2L, used in Saturn ION & VUE; Chevy Cobalt & HHR, Pontiac G5
LE5 - 2.4L, used in Saturn ION & Sky, Chevy Cobalt SS & HHR, Pontiac G5 GT, G6, & Solstice
LSJ - 2.0L supercharged, used in Saturn ION Redline, Chevy Cobalt SS Supercharged
LNF- 2.0L turbocharged, used in Pontiac Solstice GXP, Saturn Sky Redline, Chevy HHR SS
Production ECOtec Camshaft Specifications:
INTAKE
Part
12587985 - LSJ
12590699 - ‟07 L61
12578511 - LE5
12589335 - LNF
EXHAUST
Part
12584363 - LSJ
12590700 - ‟07 L61
12578512 - LE5
12589340 - LNF
Valve springs are the same across all variants, and should be upgraded for high-rpm operation or
increased lift. Upgraded valve springs are available from Bates Engineering (batesengineering.info).
2.2L L61, through 2006 model year
Cam
Peak Lift
5.9557
5.9804
6.2551
6.111207
Cam
Peak Lift
5.9543
5.9752
5.95143
6.106106
Valve
Peak Lift
10.037904
10.079534
10.542521
10.299999
Valve
Peak Lift
10.043928
10.079183
10.039087
10.300000
Valve
Timing
100
116
135
126
Valve
Timing
-115
-108
-125
-120
Duration
@1mm lash
196.50
198.40
210.30
203.60
Duration
@1mm lash
191.70
193.30
195.40
194.00
Valve area
@1mm lash
1117.70
1112.90
1253.30
1171.30
Valve area
@1mm lash
1076.40
1078.00
1092.70
1106.00
Intake cam is longer than exhaust cam.
Uses “waste spark” control system, so there is no cam position sensor.
Intake cam is the same casting as the LSJ intake and exhaust cam, but lacks the pressed-in hex.
Compatible with GM Performance Parts adjustable cam gears.
Can be replaced by GM Performance Parts matched cam set (requires Bates Enginering valve springs
and retainers to prevent coil bind) or other aftermarket cams from Comp Cams.
2.2L L61, 2007 and beyond
New intake cam has a wheel-style cam position sensor.
Intake cam is not interchangeable with any other ECOtec cams, nor with the GMPP intake cam.
Exhaust cam casting is the same as previous model years, with a slightly different cam profile
Exhaust cam is interchangeable with the GMPP exhaust cam (requires upgraded valve springs and
retainers).
Compatible with GM Performance Parts adjustable cam gears.
2.0L LSJ
Intake and exhaust cams are the same casting as each other.
Both cams have a pressed-in hex. The hex on the exhaust cam drives a cam location sensor.
Compatible with GM Performance Parts adjustable cam gears.
Cannot be replaced by the GM Performance Parts cam set.
2.4L LE5
The LE5 engine has variable valve timing and, therefore, has cam phasers.
Not compatible with the GM Performance Parts adjustable cam gears.
Both intake and exhaust cams have wheel-style cam locators.
Intake and exhaust cams are the same casting with different profiles and slightly different locations of
oil sealing rings.
Intake and exhaust cam castings are the same casting as the LNF exhaust cam casting.
Cannot be replaced by the GM Performance Parts cam set or any aftermarket cam set.
2.0L LNF
The LNF engine has variable valve timing, and, therefore, has cam phasers.
Not compatible with the GM Performance Parts adjustable cam gears.
Both intake and exhaust cams have wheel-style cam locators.
Intake cam is longer and includes a 3-lobe drive for the high-pressure fuel pump. This cam is not
interchangeable with any other cam.
Exhaust cam casting is the same casting as the LE5 intake and exhaust cam castings.
Cannot be replaced by the GM Performance Parts cam set or any aftermarket cam set.
Billet cams used in pro-level GM Racing engines (from Comp Cams)
Billet replica of the 2.2L L61 cam castings, but with a hex pressed into the intake cam.
GM Racing uses the hex on the intake cam to drive a distributor on ECOtec race engines.
GM Racing installs the billet cam set in either the L61 or LSJ head. When installed in the LSJ head,
the exhaust cam falls short and the production cam hole is plugged (see photo).
Intake cam would fit in both the exhaust and intake positions on and LSJ head, but the orientation of
the hex on the exhaust side would need to match the production exhaust cam exactly.
Requires upgraded valve springs and retainers.
Compatible with GM Performance Parts adjustable cam gears.
This cam casting. . . . . . . . . . .also fits here (refers to fit only, does not refer to operable cam profile)
GMPP Adj Cam gears
GMPP Intake, cast
GMPP Exhaust, cast
GMPP Intake blank, cast
GMPP Exhaust blank, cast
Comp Cams Intake, billet
Comp Cams Exhaust, billet
L61 Intake thru‟06
L61 Exhaust thru‟06
„07&later L61 Intake
„07&later L61 Exhaust
LSJ Intake
LSJ Exhaust
LE5 Intake
LE5 Exhaust
LNF Intake
LNF Exhaust
L61 and LSJ
L61 Intake thru ‟06 , LSJ Intake
L61 Exhaust
LSJ Intake, L61 Intake thru „06
L61 Exhaust
LSJ Intake, LSJ Exhaust, L61 Intake thru „06
L61 Exhaust
LSJ Intake
none
none
L61 Exhaust thru „06
L61 Intake thru „06
L61 Intake thru ‟06, can be cut (shortened) to fit L61 Exhaust
none
LNF Exhaust
none
LE5 Exhaust
...LINK
Last edited by RooTBeeR; Apr 13, 2011 at 01:04 PM.
No, I have not.
I don't want to thread jack this.
I've had a For Sale thread for awhile now:
https://www.cobaltss.net/forums/part...shafts-223067/
I don't want to thread jack this.
I've had a For Sale thread for awhile now:
https://www.cobaltss.net/forums/part...shafts-223067/
Quite obvious you have zero knowledge in engine building and valvetrain geometry to say something like that.
Last edited by WSFrazier; Apr 13, 2011 at 01:17 PM.
Joined: 09-29-06
Posts: 20,664
Likes: 217
From: Land of Freedom
Your right absolutely, I know nothing. Which cams again were selling like crazy?none? Jc went 12s on stock cams. I believe 12.4
So have I, and faster. I also fail to see how someone else running a mid 12 proves anything at all?
Ask ZZP how many cams they have sold, just because no one posts about them...
Ask ZZP how many cams they have sold, just because no one posts about them...
Last edited by WSFrazier; Apr 13, 2011 at 01:44 PM.




