OFFICIAL Blown 4-banger build updates!
07-20-2007, 05:33 AM
#177
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They do charge alot for some stuff. there header for instance is a work of art. I thought of getting it but soon realized for the more power I obtain for price for 5 hp was not worth it to me.
THey dont produce blanks. they get them from GM for the LSJ. you get to keep your old cams.
JBP gets the part as easily as you can. If you cant trust them then go else where.
************************************************** ******
From LSJ build book: "The factory camshafts have been replaced
with performance cams from Comp Cams. The
intake cam needs to go in the engine first.
The Comp intake cam has the following
specs: 0.441 inch net lift with 218 degree
valve duration at 0.050 inch lift on 109
degree lobe separation.""The Comp exhaust cam specs are 0.437-inch
net lift with 220-degree valve duration at
0.050-inch lift on 109-degree lobe separation."
http://tunersource.gmblogs.com/Racer...LSJ_Chap_6.pdf
See page 113 and 114
************************************************** *******
GM PART # 88958611
GM PART # 88958612
found at http://www.gmpartsdirect.com/results...ges=1&pkgid=92
************************************************** ***********
cam spec sheet from gm
http://www.crateenginedepot.com/store/PDFS/ECS.pdf
more cam blanks and performance cams from gm
http://www.crateenginedepot.com/stor...afts-C141.aspx
************************************************** ****************
Do you like getting ripped off?I am not calling you guys wrong. I am just saying in our search, we came up blank. GMMP even told us they won't give out any information for LSJ blanks, or anything about their Comp grind in the build book.
If you know how to go about getting LSJ cam blanks for GM, please let us know. If JBP is the only magical way... well then I personally won't trust them, but that is just me.
If you know how to go about getting LSJ cam blanks for GM, please let us know. If JBP is the only magical way... well then I personally won't trust them, but that is just me.
************************************************** ******
From LSJ build book: "The factory camshafts have been replaced
with performance cams from Comp Cams. The
intake cam needs to go in the engine first.
The Comp intake cam has the following
specs: 0.441 inch net lift with 218 degree
valve duration at 0.050 inch lift on 109
degree lobe separation.""The Comp exhaust cam specs are 0.437-inch
net lift with 220-degree valve duration at
0.050-inch lift on 109-degree lobe separation."
http://tunersource.gmblogs.com/Racer...LSJ_Chap_6.pdf
See page 113 and 114
************************************************** *******
GM PART # 88958611
GM PART # 88958612
found at http://www.gmpartsdirect.com/results...ges=1&pkgid=92
************************************************** ***********
cam spec sheet from gm
http://www.crateenginedepot.com/store/PDFS/ECS.pdf
more cam blanks and performance cams from gm
http://www.crateenginedepot.com/stor...afts-C141.aspx
************************************************** ****************
Last edited by Asphalt Assault; 07-20-2007 at 06:01 AM.
07-20-2007, 11:22 AM
#178
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What are the stock cam specs again? I think going to just a hotter exhaust cam profile would be better then going with brand new cams. Our intake cam provide's us with decent low end power so a hotter exhaust cam will just give us a better defined top end.
07-20-2007, 01:17 PM
#179
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They do charge alot for some stuff. there header for instance is a work of art. I thought of getting it but soon realized for the more power I obtain for price for 5 hp was not worth it to me.
THey dont produce blanks. they get them from GM for the LSJ. you get to keep your old cams.
JBP gets the part as easily as you can. If you cant trust them then go else where.
************************************************** ******
From LSJ build book: "The factory camshafts have been replaced
with performance cams from Comp Cams. The
intake cam needs to go in the engine first.
The Comp intake cam has the following
specs: 0.441 inch net lift with 218 degree
valve duration at 0.050 inch lift on 109
degree lobe separation.""The Comp exhaust cam specs are 0.437-inch
net lift with 220-degree valve duration at
0.050-inch lift on 109-degree lobe separation."
http://tunersource.gmblogs.com/Racer...LSJ_Chap_6.pdf
See page 113 and 114
************************************************** *******
GM PART # 88958611
GM PART # 88958612
found at http://www.gmpartsdirect.com/results...ges=1&pkgid=92
************************************************** ***********
cam spec sheet from gm
http://www.crateenginedepot.com/store/PDFS/ECS.pdf
more cam blanks and performance cams from gm
http://www.crateenginedepot.com/stor...afts-C141.aspx
************************************************** ****************
THey dont produce blanks. they get them from GM for the LSJ. you get to keep your old cams.
JBP gets the part as easily as you can. If you cant trust them then go else where.
************************************************** ******
From LSJ build book: "The factory camshafts have been replaced
with performance cams from Comp Cams. The
intake cam needs to go in the engine first.
The Comp intake cam has the following
specs: 0.441 inch net lift with 218 degree
valve duration at 0.050 inch lift on 109
degree lobe separation.""The Comp exhaust cam specs are 0.437-inch
net lift with 220-degree valve duration at
0.050-inch lift on 109-degree lobe separation."
http://tunersource.gmblogs.com/Racer...LSJ_Chap_6.pdf
See page 113 and 114
************************************************** *******
GM PART # 88958611
GM PART # 88958612
found at http://www.gmpartsdirect.com/results...ges=1&pkgid=92
************************************************** ***********
cam spec sheet from gm
http://www.crateenginedepot.com/store/PDFS/ECS.pdf
more cam blanks and performance cams from gm
http://www.crateenginedepot.com/stor...afts-C141.aspx
************************************************** ****************
07-20-2007, 01:55 PM
#181
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07-23-2007, 06:09 PM
#182
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In the build book they describe going to comp cams for performance cams.
Maybe ask Comp Cams or Crate Engine Depot.
Heres the info. I provided on a spec sheet. I did not realize at the time that the cam sensor would not work. but they do physically fit. So it made sense to me if they fit you could grind to what ever timing you want.
)))))))))))))))))))))))))))))))))))))))))))))))))) )))))))))))))))))))))))))))))))))
�� The 2006MY L61 cams can interchange with LSJ cams, both intake and exhaust. These cams are
the exact same profile, only at different timings. The 2006MY L61 timings are 116 intake, -103
exhaust. The LSJ timings are 100 intake, -115 exhaust.
�� The LNF and LE5 exhaust cams could interchange. The LNF and LE5 cams are not interchangeable
in any other way or with any other ECOtec cams.
Valve springs are the same across all variants, and should be upgraded for high-rpm operation or
increased lift.
The GM Performance Parts ECOtec cam set (88958648 set or 88958636/7 individually) is an aggressive
race cam. They are not stock-replacement cams; they require upgraded valve springs and retainers.
These cams were designed for a race motor, using the 06 L61 as the starting point. The cams will not fit
the 2.4L LE5 head and will not work with the stock ECM or lifters. They physically fit the 2.0L LSJ head,
but the vacuum pump / cam sensor will not work in a stock engine.
)))))))))))))))))))))))))))))))))))))))))))))))))) ))))))))))))))))))))))))))))))))))))))))
SO the question is from Comp Cams or JBP or any other producer of performance cams, do they have the timing sensors in the cams? and if not how does it work with out it?
Last edited by Asphalt Assault; 07-23-2007 at 07:48 PM.
07-23-2007, 07:17 PM
#183
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The camshaft position sensor doesn't work with the L61 cams. The car would still start but it will take more cranks due to the PCM not knowing the position of the cams during ignition.
07-23-2007, 09:16 PM
#184
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Exactly, and my cars driveablility will be out the window with the cams, and I don't need an extra thing to make it a pain in the ass.
07-23-2007, 09:38 PM
#185
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Actually, WOP said something on RLFs about an oil valley that prevents us from using the L61 cams. And we verified this when doing cam swaps on our LSJs. You would need to somehow block that valley where our cam sensor would be IIRC.
07-23-2007, 10:27 PM
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07-24-2007, 05:42 PM
#190
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07-25-2007, 12:46 AM
#195
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Go JBP then and get the grind of stock units. Oh and a local news paper here "The WInnipeg Free Press" did a FREE PRESS TUNER CAR #3. the car of choice the cobalt SS/SC. they did custom cams and retained full warranty for the full build. they also made it wingless 
. so I would think if a newspaper with GM Dealer help is able to can get cams then you can....LOL.
. so I would think if a newspaper with GM Dealer help is able to can get cams then you can....LOL.
07-26-2007, 06:00 PM
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