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9566 BA
01-09-2006, 09:37 PM
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? http://www.yenko.net/ubbthreads/images/graemlins/confused.gif

Lynn
01-09-2006, 10:35 PM
"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
01-09-2006, 11:10 PM
When I restored my 67Z, I asked Macneish and he told me 1967 used the patent pending, no patent #, no R.

Keith Tedford
01-10-2006, 10:43 PM
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
01-11-2006, 04:09 AM
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
01-12-2006, 06:49 PM
I called Groung Up and Paragon and they are not in yet.

Tommy_Mathison
01-13-2006, 02:38 AM
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.