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70 383 Magnum a 3 bolt or 1 bolt cam ?
#1101920
10/26/11 02:34 PM
10/26/11 02:34 PM
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Joined: Jul 2005
Posts: 1,954
Blairsden, CA
Triggerfish
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Blairsden, CA
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Did stock 383 magnums come with 1 bolt or 3 bolt cams? I'm
going to re-cam the 70 383 in my 71 Power Wagon for low end
torque & didn't want to pull the timing cover off to find out.
I've heard the factory installed whatever they had on the line,
so not all hp motors got the 3 bolt cams??
Last edited by Triggerfish; 10/26/11 02:37 PM.
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Re: 70 383 Magnum a 3 bolt or 1 bolt cam ?
[Re: Triggerfish]
#1101921
10/26/11 02:40 PM
10/26/11 02:40 PM
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Joined: Jan 2003
Posts: 25,757
Rio Linda, CA
John_Kunkel
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Rio Linda, CA
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No 383 ever came with a 3-bolt cam, the only Wedge to get one was the 440-6.
The INTERNET, the MISinformation superhighway
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Re: 70 383 Magnum a 3 bolt or 1 bolt cam ?
[Re: NachoRT74]
#1101933
10/27/11 10:47 AM
10/27/11 10:47 AM
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JohnRR
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Quote:
Quote:
Quote:
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No 383 ever came with a 3-bolt cam, the only Wedge to get one was the 440-6.
only 2 motors ive seen with 3 bolt cam gear factory are 426 hemi and 63/64 426 max wedge
1970 and 1971 440-6pk would have come wit ha 3 bolt cam.
and with same specs than the 440 HP I think... right ? only diff from these is the 3 bolts setup
No , the 440 4 bbl had lower compression ratio than a 6pk , 9.7 ...
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Re: 70 383 Magnum a 3 bolt or 1 bolt cam ?
[Re: NachoRT74]
#1101935
10/27/11 11:15 AM
10/27/11 11:15 AM
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JohnRR
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Quote:
I meant the cam specs, not the engine specs 
They are supposed to be ....
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Re: 70 383 Magnum a 3 bolt or 1 bolt cam ?
[Re: Triggerfish]
#1101938
10/27/11 01:06 PM
10/27/11 01:06 PM
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JohnRR
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Quote:
Thanks Randy & I was thinking of switching, but Summit's cam is only $54 & that's hard to beat & made by Crane, too. But if I ever decide to swap the 383 for my 451, maybe a 3 bolt setup would be a better selling factor if I decide to turn it loose. But being in a truck, I think the one bolt would be fine.
Hope you've been able to enjoy some top down crusin w/ the Chally.
The number of bolts in the cam has to do with the valve action of the cam.
I really don't think a 1 bolt vs a 3 bolt would be a deal breaker in selling an engine .
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Re: 70 383 Magnum a 3 bolt or 1 bolt cam ?
[Re: JohnRR]
#1101939
10/27/11 01:24 PM
10/27/11 01:24 PM
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Joined: Jul 2005
Posts: 1,954
Blairsden, CA
Triggerfish
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Joined: Jul 2005
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Blairsden, CA
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Quote:
Quote:
Thanks Randy & I was thinking of switching, but Summit's cam is only $54 & that's hard to beat & made by Crane, too. But if I ever decide to swap the 383 for my 451, maybe a 3 bolt setup would be a better selling factor if I decide to turn it loose. But being in a truck, I think the one bolt would be fine.
Hope you've been able to enjoy some top down crusin w/ the Chally.
The number of bolts in the cam has to do with the valve action of the cam.
I really don't think a 1 bolt vs a 3 bolt would be a deal breaker in selling an engine .
Thanks John. Summit's 6400 cam has a power band of 1500 - 5K, lift @ .050 is 214 int/224 ex & advertised duration of 272/282. Lift is 442/465 & has a 112 centerline. Do you think this would be a good
cam for the truck? (3.55's w/ 35" tires.)
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