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Old 09-29-2002, 02:12 PM
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Question Cam for Dodge Dart

I have a friend who wants to put lumpy cam in his
'71 Dart. He is running a 318, flat top pistons,9.2:1, 340 intake,600 edelbrock,headers,
an automatic trans, and I believe 3.42 to 3.73 gears. He wants a cam that will barely idle but doesn't want the car to fall on it' face either.
He is thinking about a .501 lift and 248 duration.
Would this be too much? Any suggestions?

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Old 09-29-2002, 02:43 PM
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Bigger isn't allways better.Take the time to match the cam to all your parts.Haveing a cam that "barly idles" usualy means low vacuum for brakes,HP made high in the rpm range,and low low speed torque.
Also with a cam .501 and 248@050 you will need a stall converter(around 3000+),a carb bigger than a 600vac sec(around 750 DP),a good flowing intake(open plenum to take advantage of the high rpm range).Your compression is prbably too low too unless you had a really light car.And 3.73 would probably be the min gear ratio.
If it has a stock converter I'd say something like 218@.050 if it has a mild converter I'd say something like 222@050.I'd use a libe sep of around 110-112 for street.I'm not a mopar guy so get a mopar guys advise for an actual grind.
A tighter lobe seperation will also give a snottyier idle like 108deg.But makes the car build power quick and drop off rather than give a broad power curve.

[ September 29, 2002: Message edited by: 78 monte ]</p>
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Old 09-29-2002, 03:37 PM
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If your friend puts this size of a cam, if it does have 248 deg duration @.050, his 318 will run like a stone unless he uses more gear ratio, at least 4.10s and a stall speed of about 3000 RPM. If he is willing to use lower gears, and buy a converter, he can get by with it, but I would recommend some head work to compliment the cam. Mopar performance has some good grinds, like the old 284-484 purpleshaft, which is the largest cam I would use with this, or contact Hughes cams, they specialize in Chrysler cams, and offer real Chrysler lobes to take advantage of the Chrysler's larger lifter diameter.
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