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Old 12-10-2003, 07:53 PM
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Cam recommendations

Hey i have a .040 350
9.1 comp
750 holley
performer rpm
stock heads mild bowl work
4.10 gears
4spd
weight 3800
I called up comp cams and asked them for a cam recommendation for this setup and he told me to go with the xe274 cam .487 .490 lift 230/236 duration
Do you think i should go with this cam or do you think i should go to something alittle smaller like the xe268 or the magnum 280, this is going to be used on the street so i dont want something to big i can live with a lopey idle.

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Old 12-10-2003, 07:55 PM
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What is the lobe sep.?
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Old 12-10-2003, 07:59 PM
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I would use the XE268 myself. I'll assume you've got the truck four-speed with granny low, right? You could probably get by with the XE274 easy enough with the 4.10s but I would want the added low end grunt of the XE268 for lugging around in high gear, and to help ease the wide gear spacing of the truck four speed , which is more like a three speed in reality because you won't be using the granny gear unless you are pulling stumps.
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Old 12-10-2003, 08:03 PM
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110 lobe separation

Yeah Nairb its a 4spd granny low thanks for the suggestion
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Old 12-21-2003, 06:17 PM
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If i were you, i would trust comp cams. i just built a motor and used a comp cam, i am very satisfied. i dont think they will do you wrong by overcamming your engine, they are good at what they do. good luck!
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Old 12-22-2003, 08:44 AM
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My experience has been that the technical advice offered by most of the major cam manufacturers is very accurate, especially with regard to cam selection. Have used Crower, Crane, Comp, Isky and Sig Erson selection advice. One thing to remember is that you are going to get much better advice if you will submit your engine details to the cam grinder via mail or fax, using the form that is in their catalog. Make a copy of the form, fill it out and fax to them. This way they are able to give your inquiry more time than they are able to during a phone call. This is especially true if anything in your application is unusual, or if the vehicle is specifically used for racing only.
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Old 12-23-2003, 07:56 AM
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I have the same setup but with a th350 and 2.73 rear gears and I run a comp magnum 270 cam and it does great.
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