can someone tell me the correct dimensions for a 67 400 automatic radiator?
Where is the best place to buy one

 

The dimensions are the same for many late 1960's into the 70's GM cars with side flow tanks. Just different tank widths for different core thicknesses. If you don't have anything to work with I can get some measurements off one I have.

Source, depends on what your looking for. If you just want one that functions but are not too concerned about it looking original there's several aftermarket aluminum radiators available. The other end of the spectrum is to find one with the correct coded tanks for a 1967 442. If the latter is what you want then you'll need to find good used tanks and likely have it re-cored. If you have time use the search option on this site to read up on other threads discussing options. A lot of members here have gone through the process of replacing or restoring the radiator in their car.

John

 

Are you wanting to stay original?? I have a particular year Suburban radiator that dropped right in. The only thing I needed was hose reducers. I can look up the part numbers. Also there was recent thread on another radiator for a 67 that worked well too. My 461 runs very cool 150-170 degrees, even here in Dallas. Cooler is better on this old Olds iron.

 

US Radiator builds the correct radiators, I got one for my 65 and it was dead on for dimensions.

 

Don't remember the dimensions off hand. Are you hung up on "show points correct" or do you want a radiator that fits well and works better than any brass/copper original or fabricated aluminum?

If its a great working radiator your after then Spectra A161 from AutoZone or Ready Rad/Tough One pn.433161 from Advance Auto ($99) Compared to a factory 4 core they cool twice as efficiently and knock off about 35lbs from the nose if the car. You will probably need hose reduction inserts to get proper fitments but that's a minor issue.

 

Thanks Smitty that was your thread on the other radiator application.