Who has put cams in their 3vze?
05-14-2005, 08:16 AM
#21
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Location: Boise, Idaho
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im still working on getting it to idle right, but i don't think its the cams yet. theres a leak somewhere, be it exhaust or vaccum. im working on it this morning to fix it. as far as the stock cams go im not sure.
05-17-2005, 02:45 PM
#22
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FWIW, my cam specs are as follows:
Intake & Exhaust:
Lobe Center sep: 107.6* (cam)
Valve overlap: 7* (crank)
Intake:
Valve opening: 3.5* BTDC
Lobe center: 107.4* ATDC
Valve closure: 38.5* ABDC
Duration: 222* (crank)
Lift: .40161"
Lobe 'area': 30.71
Exhaust:
Opens: 40* BBDC
Lobe center: 107.8* BTDC
Closes: 3.5* ATDC
Duration: 223.5* (crank)
Lift: .40205"
Lobe 'area': 30.93
sorry i forgot to get the factory cam specs. maybe tomorrow.
Intake & Exhaust:
Lobe Center sep: 107.6* (cam)
Valve overlap: 7* (crank)
Intake:
Valve opening: 3.5* BTDC
Lobe center: 107.4* ATDC
Valve closure: 38.5* ABDC
Duration: 222* (crank)
Lift: .40161"
Lobe 'area': 30.71
Exhaust:
Opens: 40* BBDC
Lobe center: 107.8* BTDC
Closes: 3.5* ATDC
Duration: 223.5* (crank)
Lift: .40205"
Lobe 'area': 30.93
sorry i forgot to get the factory cam specs. maybe tomorrow.
05-23-2005, 08:37 PM
#23
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Thread Starter
I've done a bit of research on cams and wanted to dispell a few things...I still dont know about 'grind numbers' but I do know that in conventional pushrod engines the duration is measured in degrees of crank angle, not cam angle. And cams must be taylored to the head specificially weather it's been ported or not. (this is why I desperately want the pre and post porting flow numbers on the 3vze heads - it will let me know if it's worth it)
DUDE YOU RULE!! Got the factory cam specs?
Originally Posted by ChaseHeadrick
FWIW, my cam specs are as follows:
Intake & Exhaust:
Lobe Center sep: 107.6* (cam)
Valve overlap: 7* (crank)
Intake:
Valve opening: 3.5* BTDC
Lobe center: 107.4* ATDC
Valve closure: 38.5* ABDC
Duration: 222* (crank)
Lift: .40161"
Lobe 'area': 30.71
Exhaust:
Opens: 40* BBDC
Lobe center: 107.8* BTDC
Closes: 3.5* ATDC
Duration: 223.5* (crank)
Lift: .40205"
Lobe 'area': 30.93
sorry i forgot to get the factory cam specs. maybe tomorrow.
Intake & Exhaust:
Lobe Center sep: 107.6* (cam)
Valve overlap: 7* (crank)
Intake:
Valve opening: 3.5* BTDC
Lobe center: 107.4* ATDC
Valve closure: 38.5* ABDC
Duration: 222* (crank)
Lift: .40161"
Lobe 'area': 30.71
Exhaust:
Opens: 40* BBDC
Lobe center: 107.8* BTDC
Closes: 3.5* ATDC
Duration: 223.5* (crank)
Lift: .40205"
Lobe 'area': 30.93
sorry i forgot to get the factory cam specs. maybe tomorrow.
Last edited by Bumpin' Yota; 05-23-2005 at 08:38 PM.
05-24-2005, 05:28 AM
#25
Registered User
Thread Starter
cool thanks man.
Lobe separation is right there at 107.6 with duration of 222/223. Hmmm street manners, good vacuum, and better bottom end power were the order huh?
The duration just seems low to me...maybe I'm used to looking at pushrod cams...LOL Has the duration been reduced at all?
Lobe separation is right there at 107.6 with duration of 222/223. Hmmm street manners, good vacuum, and better bottom end power were the order huh?
The duration just seems low to me...maybe I'm used to looking at pushrod cams...LOL Has the duration been reduced at all?
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