| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Hold your manifolds up against the engine, add nut, lockwasher dimension, add .250", add manifold dimension, add all up.
Remember to snug up intermanifold bolts, tighten manifold bolts, then tighten intermanifold bolts last.
Ed
Last edited by EdPruss; 12/14/2019 5:25 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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