Will GM 200r4 work with factory floor shift location?

jbc426 said
Ohhhh, so the .220" holes are already on the fittings that came on my 200R4! If they are drilled out and opened up to the .252" inside diameter of the 5/16" cooler lines, will that still allow enough of the flare sealing surface to be effective at the fittings, or will it take away too much material at the seat of the flare making it be prone to leakage/failure? Your thoughts Treblig? I will have to pick some fittings up today and do some experimenting.

Mopar fitting through holes are smaller than current 1/8"" pipe fittings. The aftermarket 1/8" fitting they sell (now) have a larger through hole. I guess the fitting manufacturer's realized that they could increase the size of the through hole without decreasing the structural integrity of the fitting or maybe they've improved the brass alloy. So you can either have the radiator shop install the proper connection on the radiator (like another member did on his radiator, see previous posts) or you can make an adapter fitting like I did. I'm not really sure you could drill out the through hole in the 1/8" pipe fitting without weakening it. You can make the through hole bigger but when you go to tighten the fitting the larger through hole might cause the fitting to break somewhere in the threaded area because of the thinner wall. I didn't drill mine because the hole was so close to the right size I didn't think it would cause much of a restriction. I do know that the new fitting will help the flow quite a bit.
All of the dimensions for both fitting are in my previous posts. If the radiator man does permanently install the fitting (silver solder) then you could drill them out larger since you won't be torqueing on the to screw them into the radiator. Just remember to hold a wrench on the radiator fitting when you tighten the 5/16" line onto it so you don't twist it off. The 5/16" line requires more torque than the 1/8" pipe can handle.

Treblig