C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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l48 cam

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Old Dec 16, 2005 | 07:08 PM
  #1  
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Silver00V6Camaro
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Drifting
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From: Huntsville Alabama
Default l48 cam

what is the stock numbers for an 75 l48 cam. duration @.050 and advertised duration. also what is the lift. thanks
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Old Dec 16, 2005 | 10:31 PM
  #2  
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From my notes:


Year, CID: '68 327, '69-up 350
Type: hyd
Part #: 3663152
Horsepower rating: '68-70 300hp, '71-72 270hp, 73-up L48
Intake opens BTDC: 28
Intake closes ABDC: 72
Intake Duration: 280
Intake Lobe Center: (112)
Intake Lift: .390"
Exhaust open BBDC: 78
Exhaust close ATDC: 30
Exhaust Duration: 288
Exhaust Lobe Center (66)
Exhaust lift: .410"
Distance between centers: (134)
Overlap: 58
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Old Dec 17, 2005 | 09:20 AM
  #3  
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Ganey
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From: CORVETTE 77 385 C.I. TEXAS
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L-48 195 202 @.050 .390 .410 114LS
Not enough for a CORVETTE !
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Old Dec 17, 2005 | 05:32 PM
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What do you mean not enough power? That same exact cam made 300 hp on the earlier corvettes. They just had a different head and intake system. It all depends on the other parts you are going to use and that cam would be great. I used just a little bigger cam than that one with modified GM 305 heads and I'm getting around 300 hp. Of course I also have a better intake, carb and headers now, but I did it. Not to mention all of this is in a 78 chevy van. You have to start off by asking yourself what you want to have in terms of power with the parts you want to use and/or already have and just research what other parts you need to balance out the equation. I might not have decades of experience but I have achieved alot with my toys.
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