The last two times that my 1970 has been judged, I've been informed that my distributor is not correct because of a hole opposite the tachometer drive gear. For starters, is this the hole the judges are referring to that's just above and to the right of my blue flashlight? If so, the judging manual states that distributors after mid-1970 have the aforementioned hole (1970-72 4th Edition page 64). My car is #9638. I'd consider it a mid-1970 car, and thus should have the hole. Thanks for your help.
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Re: 1970 350/350 Distributor
Steve....
My june L-46 doesn't have a hole. Believe it to be original. But your right about the info.
BTW, is your vac advance tube original? Been on a mission for this piece. Had a guy nice enough to send me his to evaluate/copy. Looks original to me, but I have nothing to compare it to. Emailed for some NCRS help,and a vender for copying/ reproducing..... but no responses.
Since you take such nice pics, though while you were in there you could snap one of that line. Dennis -
Re: 1970 350/350 Distributor
My vac tube is not original. I took it off a junked Chevelle or Nova many years ago. It's close to the diagram that was posted a couple of weeks ago; however, it has a couple of different bends. It passed judging in Florida last month thou, but it does not fit well. I can post a pic of it if you like.Comment
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Re: 1970 350/350 Distributor
Thanks
Have a bogus one myself.
That pic from couple of weeks ago was from me. I now have that piece in hand. It looks original in patina, and it fits my L-46 well in regard to its bending. Waiting for some input, before I post another thread about it. DennisComment
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Re: 1970 350/350 Distributor
You'd think that the Chevelle or Nova metal line would be the same considering that they have the same TCS valves. Interesting...Comment
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posting a new thread about it *NM*
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A couple of my distributors
Dec 1969 350/350 TI NOS distributor - no hole
March 23 1970 390/454 - has hole
So, it certainly may be possible that your car has a hole, my 454 is approx #7500.
MarkComment
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Re: A couple of my distributors
My #9638 car is a May 1970 car. Thanks, BunkyComment
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Re: A couple of my distributors
I have a distributor with a band that reads 1112021 9 L 16 with vacuum no. 360 12 that has a hole. BobComment
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Re: 1970 350/350 Distributor
What style of distributor shield do you have?
Box style
angled top and front as one piece?TerryComment
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Re: 1970 350/350 Distributor
Yes, box style. The shielding on my car in the picture is the incorrect one-piece replacement box.Comment
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Re: 1970 350/350 Distributor
The reason I ask is that I suspect that the hole to locate the tach drive end play bushing changed around the time of the shielding styles -- even though they are unrelated technologies. Do you believe the distributor housing and box style shielding are original to your car?
Unfortunately when we were researching these issues in the late '80s, we failed to document the change point for the distributor body very well. Now the cat is out of the bag so to speak, and one sees too few unmolested 1970 Corvettes to determine with certainty. But then maybe I am jaded.
FWIW the hole is easily filled with seam sealer and a dab of paint will cover the deed. Nice thing about the seam sealer is that it is removable should you chose to later on.TerryComment
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Re: 1970 350/350 Distributor
My Feb 05 70 coupe has 2020 distributor which I presume is the original. Has no hole. But soon will have... I prefer to install the famous plastic button to better preserve the tach gear integrity.
Best regards, Roberto, NCRS #30019, RMCComment
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Re: 1970 350/350 Distributor
I believe the plastic button can be installed without drilling the hole all the way through. Do some checking before you damage your original distributor housing.TerryComment
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Re: 1970 350/350 Distributor
I purchased my car 20 years ago without shielding; therefore, I have no idea which shielding it came with. Thanks for the idea to fill the hole.Comment
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