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Topic: Purple shaft ID (Read 143 times)
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dusterdarryl
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Iv been offerd a BB purple shaft & lifters, the guys says its a magnum cam thats all he knows, the cam has no part numbers on it, it is a purple cam by looking at it but which one? what a magnum cam?
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Shift as hard as you like, just dont break your arm... (George Hurst)
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74fldart
Jr. Member
 Offline
Posts: 17
BigBlockDart.Com
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i guess he means its from a 383 or 440 magnum. you could check the lift and also check the duration by measuring it with a degree wheel mounted and dial indicator.
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fasttcars
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the magnum cam started in 67 when it was introduced inside the 440 magnum{coronet r/t}....and commando{gtx}...the specs are 228@ 0.050intake duration.......241@0.050 exhaust duration with 0.450 intake.......0.458 exhaust lift 46 overlap and a 115 centerline..... |
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Ciscodog
Guest
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Use a dial caliper to measure the base circle, then the max lift dimension. Subtract them, multiply by 1.5 and you'll be in the neighborhood of the advertised lift. That should give you an idea.
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