63 radiator petcock question

[Edward J.]

I have a petcock that has aluminum threads on the part that screws into the radiator and metal on the winged ends, is the correct petcock suppose to be all aluminum? during my last judging this was brought to my attention, that its should be all aluminum and not magnetic.

[Patrick H.]

Re: 63 radiator petcock question

Ed,

If 63 is like later years then from the factory they had an aluminum plug that was screwed into the hole, very similar to the drain plugs in the side of the block. In service this was then usually changed to the petcock. So, in theory any petcock would not be correct.

If you need an all-aluminum one, Paragon reproduces it.

https://www.paragoncorvette.com/p-35...-assembly.aspx

Patrick

[Joe R.]

Re: 63 radiator petcock question

Ed,

The judges are correct in that a 63 should have an all aluminum petcock. They were supplied with the radiator from Harrison. Even the replacement radiators were supplied with an aluminum petcock.

JR

[Mike M.]

Re: 63 radiator petcock question

Agree with joe. C2 petcocks were utilized, not a plug. Mike

[Patrick H.]

Re: 63 radiator petcock question

There you go. Aluminum petcock in 63, but your 72 would have been a plug.

[Mike M.]

Re: 63 radiator petcock question

Not seen a plug on any c2 sbcs. Mike

[Patrick H.]

Re: 63 radiator petcock question

I saw one not long ago on a C3. As you might expect they're not common this many years later.

[Edward J.]

Re: 63 radiator petcock question

Thanks everyone for your reply's, I will try and see if DeWitt's has the all aluminum petcock when I am in Carlisle next month.

[Harry S.]

Re: 63 radiator petcock question

Ed, I just ordered one from them. It was $10 and that included shipping. I had it in a few days. Order two and have a backup.

[Edward J.]

Re: 63 radiator petcock question

Harry, did you use DeWitt's ?

[Harry S.]

Re: 63 radiator petcock question

Yes...............

[Edward J.]

Re: 63 radiator petcock question

Thanks, Are you at the national meet ?

[Harry S.]

Re: 63 radiator petcock question

Yes, check the pictures posted by Vinnie Peters

[John H.]

Re: 63 radiator petcock question

Here's what the aluminum petcock looks like.


RadDrain650.jpg

[Edward J.]

Re: 63 radiator petcock question

I wanted to bring this thread back to the front so someone could see a post on this discussion.