| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Be careful, if the spacers are single items, vibration might kill them. Find a friend with a lathe or mill, and make a solid plate with your bolt pattern and thickness to install, Al would be fine.
Many engine configurations allow the temp to open the t'stat. at some stated temp shown on the guage(220) then cool down to some static temp that is tolerable(180). My 503 is this way since original t'stats no longer available, put in radiator down pipe.
Ed
Last edited by EdPruss; 10/19/2017 1:52 AM.
'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.
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