Dist cap I.D.

[9566 BA]

On a point type GM dist cap which years used the "R"? Which years didnt use the "R"s? Which year used the Patent Pending?

[Lynn]

"R" represented a resistor type spark plug was being used. I believe this started on all the 69 models.

I know 68 Z/28 did not come with a resistor plug, but 69 did R43 as opposed to 43). I am assuming the same holds true across the board, but am sure I will be corrected if I am wrong.

Lynn

[Denis]

When I restored my 67Z, I asked Macneish and he told me 1967 used the patent pending, no patent #, no R.

[Keith Tedford]

A couple of years ago I picked up an old ignition tester. It had a brand new "Patent Pending R" cap on it. I was told at the time that this was correct for a '69. I'm just taking someone's word on that though.

[JohnZ]

That's correct - the "Patent Pending" (no "R") cap is correct for '67, also on Corvettes. They've been bringing big bucks ($150-$400) for the last six months or so on eBay, but there is now a PERFECT licensed reproduction on the market (Zip, Paragon, and several others have it this week), which will drive the prices down on eBay.

[9566 BA]

I called Groung Up and Paragon and they are not in yet.

[Tommy_Mathison]

What is the exact application for the 67 D309 non "R" cap? I have 2 NOS D308 non "R" caps that I should probably put on ebay if they are doing repos now. Thanks!

Tommy M.