[msg]

Originally Posted by truckster

I recommend using brass fittings with aluminum intakes.

If I can find it in brass. These adapters might do the trick..

https://www.amazon.com/Legines-Brass.../dp/B07485XZN4

https://www.fastenal.com/products/details/440042-131280

and I can get a die set to correct the part I have?

Does this also go for bolts for the thermostat housing, carb , and all? I have anti-seize the permatex aluminum kind that I was thinking to use on bolts. But these fittings require teflon so I was just going to use teflon only.

Also, looks like I need to send these stainless plugs back for the ports next to the thermostat housing for heater hoses I think that I will not be using with the Vintage Air system Ive ordered.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

and instead get these

https://www.amazon.com/Brass-Fitting.../dp/B081YH9W42

Originally Posted by AcampoDave

I think youll be o.k. it looks like it just affected the first few threads in the hole. Get a plastic or brass one and try again. What happened to you is called "galling". Aluminum (and stainless steel) can do that sometimes. Brass doesn't because it "plays nice" with dissimilar metals and of course plastic won't do it either. If you use a plastic fitting there will be minimal risk because the plastic threads will munch up before the aluminum ones in the event you get a cross thread situation. The manifold has what's called "national pipe thread" or NPT. Common PVC pipe fittings are also NPT you can buy a cheapo PVC fitting in the appropriate size and use it for a test mule to see if all will be well when you thread in the real deal. EDIT: ANY TAP YOU MIGHT USE ON THE MANIFOLD SHOULD BE NPT.

Wouldnt plastic have trouble with the heat of the manifold? Ill pick up a pvc 3/8 npt fitting to test today.

Thanks to you both!