oxidizr

iTrader: (4)

Just posting some info as I have recieved quite a few emails regarding stock cam specs...I have some "holes" in this information and if anyone would like to add I will update and modify.

1999 LR4/LM7 Cam
Part #12560966
lift (e/l) .466/.457"
centerlines(e/i) -118/113
separation 115.5 deg
duration @ .050"(e/i) 193/194
duration @ lash (e/i) 328/328
basecircle

2000-2001 LR4/LM7 Cam
Part # 12560967
lift (e/i) .466/.457"
centerlines(e/i) -112/116
separation 114 deg
duration @ .050"(e/i) 193/194
duration @ lash (e/i) 328/328
basecircle

2001-2002 LS1/LQ4/LQ9 cam
Part #
lift (e/i) .468/.478"
centerlines(e/i)
separation 115.5 deg
duration @ .050"(e/i) 198/208
duration @ lash (e/i)
basecircle 19.7mm

2001 LS6 Cam
Part # 12560950
separation 116 deg
lift (e/i) .525/.525"
duration @ .050"(e/i) 207/217
duration @ lash (e/i)
basecircle

2002 LS6 cam
Part #
separation 117.78 deg
lift (e/i) .548/.542"
duration @ .050"(e/i) 277/284
duration @ lash (e/i)
basecircle

1998 LS1 Hotcam
Part #
separation 112 deg
lift (e/i) .525/.525"
duration @ .050"(e/i) 217/227
duration @ lash (e/i)
basecircle

<small>[ May 10, 2002, 08:34 AM: Message edited by: oxidizr ]</small>

GREGGO

iTrader: (2)

Thank You. Very helpful to have in the database.

99RedHawk

I have the 2001 LQ4 engine and as you know and just changed cams.. We measured the lift and its only .468 intake and .478 exhaust.. The info I got from Full FLoater is that the LQ4/LQ9 is the 2002 F body cam .197/.208 .468/.478 W/115.5 LSA.. My measurements back up the lift so far..

99RedHawk

Here is the part number for the 01/02 LQ4/ LQ9 6.0 litre motors.. # 12561721.. I feel confident on this part number and cam specs but still not 100% sure if the number is the same as the 2002 f body cam.. I have a *1791* stamped on the end of my cam..Anyone know what a 2002 F body cam has stamped on it?

sand man

old thread but id like to see the new gm cam specs please