<TECH ONLY> Stock cam specs
 

This is a constant question, and one that is very hard to answer (since I don't know :jest: ).

So please post up what you *KNOW* to be true. Please guys, no guess work...


4.8L cam?
5.3L cam?
5.3L HO cam?
5.7L (LS1) cam?
6.0L cam (same cam between both LQ9 and LQ4)?
LS6 cam?
LS2 cam?

Thanks

LM7 Left - L33 Right
Both are 2005

Compression Ratio
9.49:1 9.9:1

Camshaft Lobe Lift - Exhaust
6.96 mm 7.2 mm
0.274 in 0.283 in

Camshaft Lobe Lift - Intake
6.82 mm 7.2 mm
0.268 in 0.283 in

Valves - Valve Lift - Intake Valves
11.58 mm 12.24 mm
0.456 in 0.482 in

Valves - Valve Lift - Exhaust Valves
11.82 mm 12.24 mm
0.465 in 0.482 in

114LSA 2000 and up

115.5 LSA 1999

Barrowed off of LS1tech.
http://ourworld.cs.com/jrp98ls1/cam+spec+1.jpg

Corvette LS1
97-98 12554710 199/207 .472/.479 117
98-99 12560964 199/207 .472/.479 117
2000 12560968 198/209 .500/.500 115.5
01-03 12561721 198/207 .467/.479 116

Corvette LS6
2001 12560950 204/211 .525/.525 116 385hp
02-04 12565308 204/218 .555/.551 117.5 405hp

Camaro/Firebird
98 12557812 198/209 .500/.500 119.5
99-00 12560965 198/209 .500/.500 119.5
01-02 12561721 196/207 .467/.479 116

Trucks and SUV with Vortec engine
LR4 and LM7
99 12560966 191/190 .457/.466 115.5
00-04 12560967 191/190 .457/.466 114
the 03-04 LM7 used the 12560967 camshaft

LQ4
99-00 12560967 191/190 .457/.466 114
01-04 12561721 196/207 .467/.479 116
01-04 LQ4 cam is same as Camaro, Corvette LS1 and LQ9 cam

LQ9
02-03 12561721 196/207 .467/.470 116

GM Performance Parts
Hot 12480033 219/228 .525/.525 112
ASA 12480110 226/236 .525/.525 110

Interesting fact, same size cam in the 5.7 and 6.0, and the LS1 makes peak power 400 rpm higher than the 6.0.

It says LQ4 same as Camaro, Vette and LQ9. Does the .470 and .479 lift not make a difference, or is that a typo?

Considering its the same PN id say its a typo...

looked up the PN..
196/201 .467/479 116

haha conflicting info.. :nono:

12561721 LQ9: 2002-2006 I: 196 I: 467 116 Stock cam for 2002-2006 LQ9 and 2001-2004 LS1 engines. LS1: 2001-2004 E: 201 E: 479







'99-'00 LQ4, 191/190 .457/.466 114
PN 12560967

'01-'06 LQ4, 196/207 .467/.479 116
PN 12561721

GMPP Hot Cam 219/228 .525/.525 112
PN 12480033

Different intakes and CR..

can you expand a bit on the 01-04 LQ4 cam entries?

Edit: Just pulled the cam from my '06 4.8L and it had this same one.