[ggkeller]

I bought a set of the correct bolts and nuts to mount a radiator on my 68 Camaro. It looks like the right side of the radiator bolts onto the radiator support. But the left side uses the bolts and long well nuts. If am correctly understanding how they work, it looks like the nuts just insert into the holes in the radiator support, but they only hold weight and do not attach the radiator to the support. Is this correct? Do you just bolt the nut onto the radiator and slide it into the holes? Seems like it would move around and would not hold its position. Can anybody help me with this question? Thanks.

[GunnerV]

Once you thread the bolts into the well nut, it will expand much like a wall anchor and secure the rad to the rad support.

[JimM]

I just put mine on yesterday. The wellnuts expand right out and seem to hold it well. Just a guess, but I think they are there so things can move around a bit when the rad gets hot and expands.

[JohnZ]

Exactly - they give the radiator somewhere to go when it expands without stressing the solder joints. The original 35-year-old well-nuts are still there on my car, and look just fine - have never been touched.