help decide cam
03-02-2009, 07:43 PM
#1
help decide cam i have a cc306 with 4000 stall and 390 gears.. 150 shot and bolt ons.. i was thinking of changing cam .. i dont care about street manners i just was good power.. prob will get heads done soon.
cc306 or
lunati voodo cam
this is the voodo cam spec..
•Advertised Duration (Int/Exh): 294/302
•Duration @ .050 (Int/Exh): 243/251
•Gross Valve Lift (Int/Exh): .560/.565
•LSA/ICL: 110/106
•Valve Lash (Int/Exh): Hyd/Hyd
•RPM Range: 2800-6400
cc306 or
lunati voodo cam
this is the voodo cam spec..
•Advertised Duration (Int/Exh): 294/302
•Duration @ .050 (Int/Exh): 243/251
•Gross Valve Lift (Int/Exh): .560/.565
•LSA/ICL: 110/106
•Valve Lash (Int/Exh): Hyd/Hyd
•RPM Range: 2800-6400
03-02-2009, 07:46 PM
#2
Sigh. Where to begin?
I'll just say this... www.advancedinduction.com
You're just blindly throwing parts at a mismatched combo. Bigger is not always better and, in some cases, worse.
I'll just say this... www.advancedinduction.com
You're just blindly throwing parts at a mismatched combo. Bigger is not always better and, in some cases, worse.
03-03-2009, 10:37 AM
#5
Sigh. Where to begin?
I'll just say this... www.advancedinduction.com
You're just blindly throwing parts at a mismatched combo. Bigger is not always better and, in some cases, worse.
I'll just say this... www.advancedinduction.com
You're just blindly throwing parts at a mismatched combo. Bigger is not always better and, in some cases, worse.
03-03-2009, 04:32 PM
#6
What you are completely failing to mention much less consider is the engine's rpm capabilities.
Assuming you have a stock shortblock you don't want to go over 6500 too much unless you rebuild the rods first with better fasteners. Within that limitation it is pretty hard to screw up drivability, don't get me wrong it can and has been done. With that rpm limit in mind you are looking at a cam that peaks no later than 6300.
All the major cam companies list the wrong rpm ranges for LT1 cams, my best guess is that they apply gen 1 rpm for duration rules and the LT1 likes to spin a good bit higher with the same cam. The Lunati you listed would probably peak around 7000 in a 350 LT1. Someone here tried a similar duration Comp XFI grind and it did not yet peak at 7000 which is about the limit of the stock pcm hardware, some guys get lucky and get 7200 out of it.
The 306 is the better of your two choices, but you could go "smaller" and have it work just as well.
Assuming you have a stock shortblock you don't want to go over 6500 too much unless you rebuild the rods first with better fasteners. Within that limitation it is pretty hard to screw up drivability, don't get me wrong it can and has been done. With that rpm limit in mind you are looking at a cam that peaks no later than 6300.
All the major cam companies list the wrong rpm ranges for LT1 cams, my best guess is that they apply gen 1 rpm for duration rules and the LT1 likes to spin a good bit higher with the same cam. The Lunati you listed would probably peak around 7000 in a 350 LT1. Someone here tried a similar duration Comp XFI grind and it did not yet peak at 7000 which is about the limit of the stock pcm hardware, some guys get lucky and get 7200 out of it.
The 306 is the better of your two choices, but you could go "smaller" and have it work just as well.
