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School Me on Distributor Caps #2709655
10/23/19 08:54 PM
10/23/19 08:54 PM
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NW New Jersey
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RSI700VIPER Offline OP
super stock
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NW New Jersey
I have a box of distributor caps and cant figure out which is which. Does anyone know how to identify the difference between electronic caps and point caps?


1970 Superbird 440 Six BBL, 4-Speed, Dana, FJ5
1969 Daytona Charger 440 4-Speed, Dana, EV2
1971 340 Challenger Conv. Flemington Speedway Pace Car, FC7
1970 340 Six Pack Callenger T/A 4-speed T8 Tan
1971 340 Challenger RT Formal Roof, EV2 w/ V2 Stripe & Orange Houndstooth
1969 Talladega Torino, 428CJ
1969 Gurney Special Cyclone Spoiler II, 351 Cleveland




"Id rather have a bottle in front of me than a frontal lobotomy" Ben Franklin 1755
Re: School Me on Distributor Caps [Re: RSI700VIPER] #2709663
10/23/19 09:36 PM
10/23/19 09:36 PM
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Maryland
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MoparMike1974 Offline
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Maryland
AFAIK cap is the same for points and electronic.

Re: School Me on Distributor Caps [Re: MoparMike1974] #2709688
10/23/19 11:13 PM
10/23/19 11:13 PM
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Phila
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PhillyRag Offline
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Phila
Didn't some early caps have a side window for point adj.? Or was that a GM only thing

Re: School Me on Distributor Caps [Re: MoparMike1974] #2709690
10/23/19 11:24 PM
10/23/19 11:24 PM
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
Mattax Offline
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Mattax  Offline
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Phila. Pa.
Originally Posted by MoparMike1974
AFAIK cap is the same for points and electronic.

Generally true.

Exception are the dual point - prestolite caps, which are also used for the direct Connection magnetic pickup race ditributor (aka tsach drive distributor)
They have spring loaded carbon centerthat contacts the rotor.

Re: School Me on Distributor Caps [Re: RSI700VIPER] #2709694
10/23/19 11:47 PM
10/23/19 11:47 PM
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Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
The ones with the floating carbon plug hooked to a spring is the Hi Po cap for the race and Hi Po distributors, both points and electronic. You need the rotor to match it also which has a flat brass piece form the outer edge into the contact in the center of the rotor with the carbon plug scope
The other cap is for the non Hi Po distributors with the rotor that has the raised of thin metal flexable tab in the center to touch the pointed tip going through that cap to the coil wire contact


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: School Me on Distributor Caps [Re: PhillyRag] #2709750
10/24/19 10:12 AM
10/24/19 10:12 AM
Joined: Sep 2003
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north of coder
moparx Offline
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north of coder
Originally Posted by PhillyRag
Didn't some early caps have a side window for point adj.? Or was that a GM only thing


GM only.
beer

Re: School Me on Distributor Caps [Re: RSI700VIPER] #2709776
10/24/19 01:13 PM
10/24/19 01:13 PM
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Posts: 36,040
Lincoln Nebraska
RapidRobert Offline
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Lincoln Nebraska
& the good ones have brass terminals, cheaper ones are aluminum


live every 24 hour block of time like it's your last day on earth
Re: School Me on Distributor Caps [Re: RapidRobert] #2709781
10/24/19 01:43 PM
10/24/19 01:43 PM
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Blair County,PA
62maxwgn Offline
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62maxwgn  Offline
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Blair County,PA
Originally Posted by RapidRobert
& the good ones have brass terminals, cheaper ones are aluminum



And all the original O.E.M. Prestolite had aluminum contacts !! work

Re: School Me on Distributor Caps [Re: 62maxwgn] #2709803
10/24/19 02:57 PM
10/24/19 02:57 PM
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Big Sky Country
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MO_PA Offline
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Big Sky Country
Caps that are smooth inside are junk, and they have aluminum terminals.

Re: School Me on Distributor Caps [Re: MO_PA] #2709827
10/24/19 04:48 PM
10/24/19 04:48 PM
Joined: Mar 2003
Posts: 673
Kennewick, Wa.
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71vert340 Offline
mopar
71vert340  Offline
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Kennewick, Wa.
Here's the NAPA cap I use on my 71 340 dual point distributor. Works great .
Terry

Dual Pt Dist. 71 Cap.jpgDual Pt. Dist. Cap 71 Inside.jpg
Re: School Me on Distributor Caps [Re: RSI700VIPER] #2709828
10/24/19 04:52 PM
10/24/19 04:52 PM
Joined: Jun 2003
Posts: 21,346
It's a dry heat
gtx6970 Offline
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gtx6970  Offline
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Posts: 21,346
It's a dry heat
Dists with electronic and single points are/were the same cap
Dual point caps are a different cap altogether

OEM was tan caps up to about 1966 model year,
Black prior to that ,,,then went back to black Im thinking real late 70s early 80s time frame







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