radiator nipple cap?
Carl
See the two black caps in the picture below......one on my vacuum port on the TB and one on my passenger valve cover port....those are heater caps meant for radiator ports. I've seen much more heavy duty ones too.
The second picture is my extra port on the LT1 radiator I put in my LS1. I used a short piece of 3/8" heater hose, clamped it onto the port, then stuck a plastic plug in the other end to use for flushing the cooling system easily. You could do that maybe and cap off the other end the same way. Mine has been like that for about 5 years now and its still good and strong.
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That thing can take one of those caps with a clamp. But like I said...I have seen much more heavy duty caps. The ones I have on the TB and intake ports in my pictures were NOT the heavy duty ones. I didn;t need them to be so thick and tough.
If you can't find them just use 2 inches of heater hose, clamp it on, then plug the other end and clamp it also.
I'm going to the parts store today actually, if I find them I'll grab'em and mail them to you. They're only a couple dollars.
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