Don't forget to only use a 3 or 5 psi cap, old radiators were not built for today's higher pressures, and an overflow tank, to suck the water from heat expansion back in, like modern systems. Chrysler makes a handy size vertical tank that works well in a crowded engine compartment, it is plastic, though, no-one will see it but you on a COE. Various pickups.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.