are both ln2 cams the same?(2.2 and 2200) anyone know? is there somewhere i could go(like a website or something) that would have their specs?

i looked it up on rockauto.com to see the cross reference.

i looked up a 98 LN2:

part number: CS1567
Mnfr: Sealed Power

Quote:


BUICK CENTURY CUSTOM 1994
BUICK CENTURY SPECIAL (1994 - 1996)
CHEVROLET BERETTA (1994 - 1996)
CHEVROLET CAVALIER (1995 - 2002)
CHEVROLET CAVALIER LS (1995 - 1998)
CHEVROLET CAVALIER RS (1994 - 1998)
CHEVROLET CAVALIER VL 1994
CHEVROLET CORSICA (1994 - 1996)
CHEVROLET LLV (1994 - 1995)
CHEVROLET S10 PICKUP (1994 - 2002)
GMC SONOMA (1994 - 2002)
OLDSMOBILE CUTLASS CIERA S 1994
OLDSMOBILE CUTLASS CIERA SL (1995 - 1996)
PONTIAC SUNFIRE (1998 - 2002)
PONTIAC SUNFIRE SE (1995 - 1997)

thats everything that cam is supposed to fit in.


1997 Cavalier Z24
Bomz Short Ram Intake
Vibrant Cat-Back
KYB GR2 Struts
Goldline 1.75" Springs
RK Sport Upper Insert
RK Sport Lower Dogbone
Custom Tune by Shane @
innovativetuning@rogers.com

15.647 @ 88.02 MPH

The '94-'97 2.2L LN2 hydraulic roller cams specs are:

Intake duration @ .050" : 198*
Exhaust duration @ .050" : 198*
Intake lobe lift : .288"
w/ 1.5 rockers @ the valve : .432"
EXhaust lobe lift : .288"
w/ 1.5 rockers @ the valve : .432"
Intake C/L : 109* ATDC
Lobe separation Angle : 114* (some specs from Crane Cams were 113*, others have said 114*)

Note : The '94 & '95 cams don't have the cam position sensor notch that is required for a '96 or '97 motor.

To the best of my knowledge the '98+ 2200 LN2 cam specs are:

Intake duration @ .050" : 185*
Exhaust duration @ .050" : 185*
Intake lobe lift : ..263"
w/ 1.5 rockers @ the valve : .421"
EXhaust lobe lift : .263"
w/ 1.5 rockers @ the valve : .421"
Intake C/L : 108* ATDC
Lobe Separation Angle : 112*(Some specs from Comp Cams said 111*, others have said 112*)

I accredit the differences in the LSA to either cam wear or manufacturing irregularities.

While the position of the crank position sensor notch is different between the 2.2L & 2200s, it isn't certain that the cam notches are different. I too used to believe they were different, but I'm not so sure. I still need to get a 2200 cam to compare the positions. Besides the C/Ls on the 2200 cams would be more useful on a N/A motor, while the 2.2Ls C/Ls would be better suited to boost or nitrous.

may seem like a dumb question coming, but what is a C/L? I haven't heard that term before. . ..

C/L = Center Line(s) in reference to the intake and/or exhaust lobes.

Quote:

To the best of my knowledge the '98+ 2200 LN2 cam specs are:

Intake duration @ .050" : 185*
Exhaust duration @ .050" : 185*
Intake lobe lift : ..263"
w/ 1.5 rockers @ the valve : .421"
EXhaust lobe lift : .263"
w/ 1.5 rockers @ the valve : .421"
Intake C/L : 108* ATDC
Lobe Separation Angle : 112*

do u mean 1.6 rockers or 1.5? if 1.5 is correct, how much would lobe lift be with 1.6 rockers?

just multiply the cam lobe lift by 1.6 adn you will have valve lift with the 1.6 rocker

madjack i am taking a 2200 apart within the next few weeks if you pay for shipping ill send you the cam out of it

Bob, PM Sent.

Is this happening? I have no interest in the cam, but I am interested in getting the cam sensor angle measurement. I would be willing to cover shipping to NH in order to make a comparison against a 97 cam.

-->Slow

once i get the engine apart i can send the cam and top end to whoever wants all i am using is the block crank rods and pistons

this thread got pretty interesting...waiting...

MadJack wrote:The '94-'97 2.2L LN2 hydraulic roller cams specs are:

Intake duration @ .050" : 198*
Exhaust duration @ .050" : 198*
Intake lobe lift : .288"
w/ 1.5 rockers @ the valve : .432"
EXhaust lobe lift : .288"
w/ 1.5 rockers @ the valve : .432"
Intake C/L : 109* ATDC
Lobe separation Angle : 114* (some specs from Crane Cams were 113*, others have said 114*)

Note : The '94 & '95 cams don't have the cam position sensor notch that is required for a '96 or '97 motor.

To the best of my knowledge the '98+ 2200 LN2 cam specs are:

Intake duration @ .050" : 185*
Exhaust duration @ .050" : 185*
Intake lobe lift : ..263"
w/ 1.5 rockers @ the valve : .421"
EXhaust lobe lift : .263"
w/ 1.5 rockers @ the valve : .421"
Intake C/L : 108* ATDC
Lobe Separation Angle : 112*(Some specs from Comp Cams said 111*, others have said 112*)

I accredit the differences in the LSA to either cam wear or manufacturing irregularities.

While the position of the crank position sensor notch is different between the 2.2L & 2200s, it isn't certain that the cam notches are different. I too used to believe they were different, but I'm not so sure. I still need to get a 2200 cam to compare the positions. Besides the C/Ls on the 2200 cams would be more useful on a N/A motor, while the 2.2Ls C/Ls would be better suited to boost or nitrous.

Since the '98-up rockers are actually 1.52:1, shouldn't there be a correction of at-valve lift?


Go beyond the "bolt-on".

Yes I did make a typo, corrections are in red:

MadJack wrote: To the best of my knowledge the '98+ 2200 LN2 cam specs are:

Intake duration @ .050" : 185*
Exhaust duration @ .050" : 185*
Intake lobe lift : ..263"
w/ 1.6 rockers @ the valve : .421"
EXhaust lobe lift : .263"
w/ 1.6 rockers @ the valve : .421"
Intake C/L : 108* ATDC
Lobe Separation Angle : 112*(Some specs from Comp Cams said 111*, others have said 112*)

Nickelin Dimer wrote:Since the '98-up rockers are actually 1.52:1, shouldn't there be a correction of at-valve lift?

The '98+ rockers actually measured 1.54:1. Comp Cams Magnum Roller Rockers are 1.52:1. The listing above is for the nominal ratio, not the actual measurement.

Quote:

The '94-'97 2.2L LN2 hydraulic roller cams specs are:

Intake duration @ .050" : 198* (should be 188*)
Exhaust duration @ .050" : 198* (should be 188*)
Intake lobe lift : .288"
w/ 1.5 rockers @ the valve : .432"
EXhaust lobe lift : .288"
w/ 1.5 rockers @ the valve : .432"
Intake C/L : 109* ATDC
Lobe separation Angle : 114* (some specs from Crane Cams were 113*, others have said 114*)

Note : The '94 & '95 cams don't have the cam position sensor notch that is required for a '96 or '97 motor.

Well, I just got done degreeing the cam, the lobe lift, C/L & LSA are correct, but the duration is wrong, it is only 188*, not 198* as stated above. I ran the measurements and calculations a few times each to be sure. I didn't help, the timing chain was so loose, all my measurements were 4* retarded. Then again this was the original timing set in the motor.

I did make a FUBAR, I forgot to get the angle of the cam position timming notch! I did look though and it appears to be about 30 cam degrees after the cam dowel.

that's a biiiiig difference... what would a duration closer to 198* do for us?



JBO Stickers! Get yours today!

You would get more mid range torque.

I still feel something in the low to mid range of the 200s on the intake and an exhaust duration of about 6-10* longer would work best for N/A or nitrous and the low 200s for turbo with even to slightly shorter duration exhaust, depending on turbo size. If you move up in gearing, improve the valve train (i.e. valve springs) and up the rev limiter, you can do more.

Well, that isn't much of a surprise... As you may recall, the LN2 Guide said that the Series-II engine got a cam that in conjunction with the new head made more mid-range power. And from what I remember from reading about the effect C/L & LSA have on engine performance, a tighter LSA cam makes the power-curve more peaky. Combine that with the given fact the factory exhaust manifolds aren't the best in design suited for the flow requirements that the cam necessitates, and it's no-wonder why the the all-stock Series-II LN2 falls on it's face compared to the Series-I in both power & efficiency performance aspects: That damn manifold is robbing us of usable torque!

Guess I'm gonna hafta swap-in a Series-I cam if I want to get the most usable torque outta my Series-II when I install that 22"-runner header. Or when I go with the Tri-Y from turbos10.com. Is Al's Headers still in business? I dunno...

Hey MadJack, you got one of those "Cam Doctors" that hook-up to a computer to measure cams? Or is the ol' classic method you're using?


Go beyond the "bolt-on".

I use the good ol' dial indicator w/ stand and degree wheel. Run each measurement about 3 to 4 times to verify everything, then burn up the calculator!

GM's published values don't always match actual numbers. Cams are just one part affected. The cam specs I've posted were from aftermarket cams, IIRC Clevite branded cams.
-->Slow

Is the 2200 ln2 the non-ecotec engine?