help me pick a cam....
#1560577
01/07/14 11:48 PM
01/07/14 11:48 PM
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Joined: Dec 2004
Posts: 2,368
Wheatfield, NY
Cuda340
OP
top fuel
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OP
top fuel
Joined: Dec 2004
Posts: 2,368
Wheatfield, NY
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I need help with picking a cam. Here are the specs: 1970 383 that is .030 overbore rebuilt with factory pistons and rods 10 to 1 comp factory 906 heads redone distributor recurved 780 street avenger carb car specs: 1970 roadrunner automatic trans with a little more stall 3:55 gears power brakes and air conditioning. So it needs to make some vacuum. Any suggestions? I need it to be hydraulic. I also have adjustable rockers thanks 
Last edited by Cuda340; 01/07/14 11:52 PM.
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Re: help me pick a cam....
[Re: Cuda340]
#1560581
01/08/14 01:20 AM
01/08/14 01:20 AM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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Quote:
I probably will use hughes but has anyone else have good success with any others?
Hughes doesn't grind cams,call Tim @ Bullet.
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Re: help me pick a cam....
[Re: cjs69mope]
#1560585
01/09/14 05:43 AM
01/09/14 05:43 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
You realize that there are no 383 10:1 factory or factory like replacement pistons available. If it is a flat top it is probably 9:1 at best.
If they are the flat top pistons with no valve reliefs, you may be limited to pretty mild cams due to valve to piston clearance?
I would use a mild cam like the Lunati Voodoo 262/268 (60302LK.) This is 220/226 @ 0.050 duration and 0.475"/0.494" lift. It uses the 3-bolt timing gear.
The Comp XE262H is about the same, but uses a single bolt timing gear. It is also slightly milider. 262/270 advertised duration, 218/224 @ 0.050" duration, 0.462"/0.470" lift.
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Re: help me pick a cam....
[Re: Cuda340]
#1560588
01/11/14 03:31 AM
01/11/14 03:31 AM
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Joined: Jul 2004
Posts: 4,384
Worst Weather USA
493_DART
master
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master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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I started with a Scott Brown cam in my engine a few years ago..due to all the rave reviews on this site. It worked well...the following year I tried a Hughes cam that was similar in specs . I talked to Hughes on the phone and we agreed on one of their "shelf" cams, a flat tappet that should work nice with my combo. The car picked up a TENTH . Ill stick with Hughes cams thank you Mopar company that designs Mopar cams = works for me 
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Re: help me pick a cam....
[Re: 493_DART]
#1560589
01/11/14 04:00 AM
01/11/14 04:00 AM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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I always picked my own cams as I felt I had pretty good knowledge of camshafts after being a tech all my life. But when I built this pump gas 493 I wanted a nice solid flat tappet cam as I drive it on the street 99% of the time and wanted one made to work well with my combo as I also knew I was going to race it capped up. So I went to Dwayne Porter as every car I see with his cams in them run great ! And I am 100% pleased. And he is a very nice guy to work with that has good fair prices. The car more then met my goal of running 10's on pump thru the pipes and I thank him very much for grinding me a good cam. He is one of the smartest guys I have ever talked to and his work shows it. If you would decide to call him anytime just let me know as I have his phone#. You cant go wrong talking to a pro about your cam as the guys who grind the cams are pro's who do that work every day. Good luck which ever cam you use. Ron
Last edited by 383man; 01/11/14 04:02 AM.
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Re: help me pick a cam....
[Re: 451Mopar]
#1560590
01/11/14 05:08 AM
01/11/14 05:08 AM
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Joined: Sep 2004
Posts: 6,906
IL, Aurora
ademon
master
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master
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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Quote:
Quote:
You realize that there are no 383 10:1 factory or factory like replacement pistons available. If it is a flat top it is probably 9:1 at best.
If they are the flat top pistons with no valve reliefs, you may be limited to pretty mild cams due to valve to piston clearance?
I would use a mild cam like the Lunati Voodoo 262/268 (60302LK.) This is 220/226 @ 0.050 duration and 0.475"/0.494" lift. It uses the 3-bolt timing gear.
The Comp XE262H is about the same, but uses a single bolt timing gear. It is also slightly milider. 262/270 advertised duration, 218/224 @ 0.050" duration, 0.462"/0.470" lift.
I run that Voodoo in my 10.1 68 383, stock carb stock intake and exh manifolds that have been port matched and "worked" 915 heads. the cam is great a lot of low end and pulls extremely hard all the way up to 5,500, i really was surprised by this cam! it gives me 17" of vacuum at about 850 900rpm in neutral "4-speed". i also have power brakes.
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Re: help me pick a cam....
[Re: ademon]
#1560591
01/11/14 11:09 AM
01/11/14 11:09 AM
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Joined: Feb 2005
Posts: 4,318
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,318
Prospect, PA
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Quote:
Quote:
Quote:
You realize that there are no 383 10:1 factory or factory like replacement pistons available. If it is a flat top it is probably 9:1 at best.
If they are the flat top pistons with no valve reliefs, you may be limited to pretty mild cams due to valve to piston clearance?
I would use a mild cam like the Lunati Voodoo 262/268 (60302LK.) This is 220/226 @ 0.050 duration and 0.475"/0.494" lift. It uses the 3-bolt timing gear.
The Comp XE262H is about the same, but uses a single bolt timing gear. It is also slightly milider. 262/270 advertised duration, 218/224 @ 0.050" duration, 0.462"/0.470" lift.
I run that Voodoo in my 10.1 68 383, stock carb stock intake and exh manifolds that have been port matched and "worked" 915 heads. the cam is great a lot of low end and pulls extremely hard all the way up to 5,500, i really was surprised by this cam! it gives me 17" of vacuum at about 850 900rpm in neutral "4-speed". i also have power brakes.
That sounds like a nice combo. Do you know what it runs? How many cars you got?
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