advance my comp cam or not
02-26-2011, 08:05 PM
#1
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advance my comp cam or not Should i advance my cam i have a 01 ls1 stock heads, truck intake and shorty headers, full exhaust 3.08 gears right now its in a 99 s10 blazer? I am going to run a 3400 stall looking for good low end not trying to race just want good power. Here are the cam specs.
Serial # X 9309 Spec Card# 026347
Part # 54-000-11 CAMSHAFT, LS1 CHEVY LS1/GEN III '97-UP
Core C54-11C CAMSHAFT BLANK, LS1 1997 UP 5.7 CORVETTE
Grind # LS1 3714R /3716R HR114.0
DURATION @ .050 INTAKE 222 ROCKER ARM RATIO
VALVE ADJ INTAKE .000 DURATION @ .050 EXHAUST 226 INTAKE 1.70
VALVE ADJ EXHAUST .000 LOBE LIFT INTAKE .3330 EXHAUST 1.70
VALVE LIFT INTAKE .566 LOBE LIFT EXHAUST .3350
VALVE LIFT EXHAUST .569 LOBE SEPARATION 114.0
DURATION .006 INTAKE C/L 114.0
TAPPET LIFT INTAKE 275 CAM ADVANCE 0
TAPPET LIFT EXHAUST 279 HYDRAULIC Y
VALVE TIMING .050 OVERHEAD CAM N
VALVE OPEN INTAKE 3- JOURNAL DIAMETER STD 2.165
VALVE OPEN EXHAUST 47 RECOMMENDED VALVE SPRINGS
VALVE CLOSED INTAKE 45 DEPARTMENT R
VALVE CLOSED EXHAUST 1- SPC INSTR FOR CUSTOMER
Serial # X 9309 Spec Card# 026347
Part # 54-000-11 CAMSHAFT, LS1 CHEVY LS1/GEN III '97-UP
Core C54-11C CAMSHAFT BLANK, LS1 1997 UP 5.7 CORVETTE
Grind # LS1 3714R /3716R HR114.0
DURATION @ .050 INTAKE 222 ROCKER ARM RATIO
VALVE ADJ INTAKE .000 DURATION @ .050 EXHAUST 226 INTAKE 1.70
VALVE ADJ EXHAUST .000 LOBE LIFT INTAKE .3330 EXHAUST 1.70
VALVE LIFT INTAKE .566 LOBE LIFT EXHAUST .3350
VALVE LIFT EXHAUST .569 LOBE SEPARATION 114.0
DURATION .006 INTAKE C/L 114.0
TAPPET LIFT INTAKE 275 CAM ADVANCE 0
TAPPET LIFT EXHAUST 279 HYDRAULIC Y
VALVE TIMING .050 OVERHEAD CAM N
VALVE OPEN INTAKE 3- JOURNAL DIAMETER STD 2.165
VALVE OPEN EXHAUST 47 RECOMMENDED VALVE SPRINGS
VALVE CLOSED INTAKE 45 DEPARTMENT R
VALVE CLOSED EXHAUST 1- SPC INSTR FOR CUSTOMER
Last edited by jjbiggers2; 02-26-2011 at 08:16 PM.
02-27-2011, 09:09 AM
#6
Sounds like the cam is already installed - was it degree'd when installed? If you know it's installed on a 114 ICL, then I think it would be best to advance it 4 degrees for your application.
Unfortunatley, that does open your exhaust valve quite a bit earlier as well, but is the bext compromise for you you wish to use the car. Another option would be a custom grind, like shown below.
The 218/226 cam still has 0 overlap at .050" lift, so should work fine with shorty headers and should not idle to much differently than your current cam. It will make more torque sooner than your cam now. It should peak around 5,600 or so but pull well to 6,000, whereas your current cam probably peaks after 6,300 if installed on a 114 ICL.
Not only do you get more useable power like this, you also limit the RPM required to use it, paramount to keeping a 4L60e allive (although you didn't mention what trans you have).
Unfortunatley, that does open your exhaust valve quite a bit earlier as well, but is the bext compromise for you you wish to use the car. Another option would be a custom grind, like shown below.
Code:
222/226 114+0 222/226 114+4 218/226 109+2 IVO -3 1 2 IVC 45 41 36 EVO 47 51 44 EVC -1 3 2
Not only do you get more useable power like this, you also limit the RPM required to use it, paramount to keeping a 4L60e allive (although you didn't mention what trans you have).
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02-27-2011, 05:16 PM
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The motor is not in the truck yet and i have not put my timing chain on yet just trying to decide to advance it or not. Right now i have a 5.3 with a 04 zo6 cam in it and it want even spin a tire, but it does have a stock converter and no tune. Just looking to be able to burn the tires off lol.
