| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | D-70 or D-80 rear axle with modern ratios and disc brakes and P-3500 HD, etc., front disc brake hubs and spindles, Delphi( ex Saginaw) power steering and hydro boost brakes as above can keep any truck with older frame and ‘tin up to modern highway speeds and roads with a little bit of effort.
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.
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