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is this cam too big?

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Old Jan 19, 2002 | 02:42 PM
  #1  
super83Z's Avatar
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From: Brockton, MA, USA
Car: 1983 Z28
Engine: 6.6L 406
Transmission: T-56
is this cam too big?

I have posted this on the DIY prom board as well but I want to do it here as well.

I am looking at a Comp cams 230/244 with a 112 LSA roller cam
I am running a 92 Z28 comp with a custom chip. The motor is a 406 roller motor with Edelbrock RPM heads 10 to 1 compression , 125-150 shot of NO2 and 30 lb injectors with a 58mm throttle body. Will the GM computer be able to handle this?
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Old Jan 22, 2002 | 02:27 PM
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From: Freehold, NJ
Car: 1991 Formula
Engine: 434
Transmission: PG
Axle/Gears: 4.33
To respond to your question. I have a 406 in a 91 Formula with 10:1 comp. It is an automatic car with 3000 stall and 4.11 gears.

I have a mini ram and solid roller cam.

The cam specs out at 242/248 @0.050" with .657 / .600 lift on 114 centerline.

Now I have a DFI but it idles very well and runs like hell.

Good luck with yours.

Steve
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Old Jan 22, 2002 | 03:48 PM
  #3  
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From: Kempner,TX,
Car: 1996 Vette / 1992 GSX1100F Suzuki
Engine: 1996 Corvette Coupe 388 LT1 (+.060)
Transmission: Auto
Axle/Gears: 3.07
From all I've read the GM factory computer is very sophisticated and is up to handling the job.

It's the PROM that will need modification to work correctly with your combination.

The spark and fuel curves will need addressing as well as idle speed, etc. to work with your combo.

Jake
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Old Jan 22, 2002 | 07:59 PM
  #4  
super83Z's Avatar
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From: Brockton, MA, USA
Car: 1983 Z28
Engine: 6.6L 406
Transmission: T-56
How is that solid roller cam? Does it require frequent adjusting? Can someone give me a place wit more choices than Comp cams or Crane? I am looking for a retro-fit roler cam. But can't fid the right cam anywhere. 224/230 is a ok but I want to go a little bigger than that. That was the other cam Iwas looking at.
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Old Jan 22, 2002 | 08:03 PM
  #5  
Fastbird's Avatar
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From: Freehold, NJ
Car: 1991 Formula
Engine: 434
Transmission: PG
Axle/Gears: 4.33
solid roller is not that bad. A little of a pain in the *** to adjust with the heater core hoses draping over the valve cover. Driver side is very easy. I do them every 1000 miles or so. It is not for someone who does not mind working on the car once in a while. If you can stand the maintenence, the power rewards are great.

I have a pump gas car with A/C and idles nice that runs 12.20's need I say more?
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Old Jan 22, 2002 | 08:06 PM
  #6  
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From: Brockton, MA, USA
Car: 1983 Z28
Engine: 6.6L 406
Transmission: T-56
I don't mind but this car will be my daily driver. I can get them alot cheaper than hydraulic so that is why I was wondering.
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Old Jan 22, 2002 | 11:02 PM
  #7  
rhuarc30's Avatar
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From: Cottonwood, AZ 86326
Comp cams has a nice picture on their website showing the different lobe shapes for the different kinds of lifters so you can see the benefits of the different designs. Go to www.compcams.com and click on the link on the top of the page that says camshafts. Hope this helps.
BTW your cam sounds fine for your combo, FI will help make a big cam more liveable #1, and the extra cubes in the 406 will also.
John
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Old Jan 22, 2002 | 11:06 PM
  #8  
super83Z's Avatar
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From: Brockton, MA, USA
Car: 1983 Z28
Engine: 6.6L 406
Transmission: T-56
I am so confused. cams are so complicated. there are too many choices. I jsut don't want to "****" off the computer.
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