Distributor question
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Joined: Jan 2007
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From: Santa Clarita CA
Distributor question
What is the difference between the low HP and high HP single point distributors in the C2's. Is it just a spring rate difference or is there some other differences.
Thanks
Thanks
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From: Camp Verde AZ
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Centr adv, vac can and the number stamped on the side.
You can cahnge the can and the springs but the number is a little harder to deal with.
For grins, I looked up the distrib that I had been running since 1974, that was recurved for my motor. It came out of a 1970 Canadian 307 Nova. the PN tells you everything.
Doug
You can cahnge the can and the springs but the number is a little harder to deal with.
For grins, I looked up the distrib that I had been running since 1974, that was recurved for my motor. It came out of a 1970 Canadian 307 Nova. the PN tells you everything.
Doug
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From: Westport CT
not aware of the "numbers stamped on the side" - the only numbers differentiating C2 distributors is on the metal band (date and dist # there, based on config). aside from that band, no way to tell, and even with the band, no way to tell what's in there.
Agree that weights and springs and vac can differ with diff engines, and SHPs got or at least needed to get higher tension points.
Agree that weights and springs and vac can differ with diff engines, and SHPs got or at least needed to get higher tension points.
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Aluminum distribs have the number roll stamped on the side of the housing, at least in passenger car apps.
the post was not clear if it was a cast iron housing, or not. Or if it was dual point, which would indicate high HP.
Doug
the post was not clear if it was a cast iron housing, or not. Or if it was dual point, which would indicate high HP.
Doug
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From: Santa Clarita CA
Thanks for all of the information. I just picked up a 1970 350/350 single point dist part number 1112021. on Ebay today. I was looking at a couple of different ones and just wanted to verify that I could make either one work. This should work for my application. The PO changed out the dist to a non tach drive and sun tach on the steering column I will now find out if this was due to the tech being broken or just to lazy to get the correct tech drive dist.
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CT: Look before you speak...
In 1965, Chev started making distribs out of aluminum, and stamping the part number on the aluminum housing, just below the distrib cap.
Chev kept using cast iron distribs on Corvettes until 68 or 69, and most had the tag as you mentioned probably because they were such low volume, it was easier to do tags rather than stamp, but I have heard of some that may have been stamped, but have no absolute verification.
I believe the cast distribs were used so late on Corvette because they had tach drive provisions and the alum ones did not, but I am not a distrib expert.
ALL distribs from 69 or 70 on, were alum, and had stamped numbers, not tags.
Doug
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From: Westport CT
"CT: Look before you speak..."
I did, I promise, the question was first posed about "distributors in the C2s":
Whereupon you advised him to look for the "part number stamped on the side", which simply does not exist on "distributors in the C2s". As for other cars and later years, obviously I do not know or claim to know anything 'bout that. That's why I stay here, on the C1-C2 forum, and don't stray too far - I don't want to go "outside my circle of competence" as Mr. Buffett would say. 
I did, I promise, the question was first posed about "distributors in the C2s":
That's why I stay here, on the C1-C2 forum, and don't stray too far - I don't want to go "outside my circle of competence" as Mr. Buffett would say.
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From: Huntsville AL
I also believe that the 2021 distributor was originally used on 1970 Corvettes only. Not used on other models.
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