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post #1 of (permalink) Old 12-15-2004, 02:06 PM
greg_Z71
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help with a cam shaft?

i need some help i have a fullsize jimmy with 35's and a 350 in it and im wondering what i should put in it for a cam , i do some offroading and street driving the moter is a 350 it has edelbrock proformer intake 3"flowmaster exhaust single , stock carb, petejackson geardrive , hedman headers , th700 trans, stock converter would a 480 lift cam be too much ? because i can get one cheap its new . or should i just by a 4x4 camshaft from compcams ? thanks , and im soon goin to be putting a 650 edelbrock carb on it
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post #2 of (permalink) Old 12-16-2004, 11:12 PM
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Re: help with a cam shaft?

Give Summit a call. I did that and told them what I wanted and they gave me two choices. I picked the cheaper and am happy so far.

Merry Christmas,

Jim
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post #3 of (permalink) Old 12-18-2004, 08:02 AM
 
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Re: help with a cam shaft?

Besides the fact that .480 lift is about maxed out for what stock heads can take its more about duration. Anything more than 214* intake and 224* exhaust at .050 lift will be too much for a heavy truck. You need the lower duration to aid in low end torque to get the beast moving. Id call up comp cams or summits tech line, tell them what youve got, and use their suggestions. The comp Xtreme 4x4 cams are really nice truck cams, and id recommend one of the two smaller ones. http://www.compcams.com/Technical/Cu...ML/128-169.asp

Also , you mentioned you were going to use an edelbrock performer carb. I have found them to be an extrememly poor carb for anyone that does any off roading. They dont like bouncing around or any kind of angles. I'd suggest you keep your Q jet and get it set up by someone who really knows carbs in your area. A sped shop should be able to tell you who can do this.
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post #4 of (permalink) Old 12-18-2004, 11:00 AM
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Re: help with a cam shaft?

I love my Q-Jet, but I like to play around, so I am also trying a Holley Truck Avenger. It is not a "bolt on and go" carb. It really must be worked on and tweaked.

Jim
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post #5 of (permalink) Old 12-18-2004, 07:26 PM
 
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Re: help with a cam shaft?

i have a edlebrock carb it is a piece of $&@# and i loved the Q- jet i had on it but a friend of mine just bought the holly it is a nice carb just make sure you get the new one because they had problems with the old ones and at far as cams go i am running a 294 duration with a 580 lift also around 600 hp so i would recommend a 260 range and a 500 lift if it were me.
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post #6 of (permalink) Old 12-19-2004, 04:27 PM
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Re: help with a cam shaft?

I would suggest a .420/.443 lift cam. The lower lift of a .420/.443 cam will help the low RPM performace for good fuel ecomony at 65 MPH.
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