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post #1 of 3 (permalink) Old 03-17-2016, 11:19 AM Thread Starter
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'69 GTO Motor Mounts

Back on 4/29/2012 a person by the username of "Cadillaclady" posted a question about 1969 GTO Motor Mounts. I'm having a problem with the center steering linkage rubbing tight against my oil pan. The very same problem "Cadillaclady" had. "Cadillaclady" didn't post what was done to correct the problem. I'm interested in what was done to correct the problem. I'm in desperate need of some answers for my problem. "Cadillaclady" if you are still on the Forum would you please post what you did to correct the problem or send me a PM. If anyone else has had this same problem please post or PM me ASAP. I purchased new motor mounts from Ames when we restored the car. They shipped them directly to the Restoration Shop. Any help would greatly be appreciated. Thank You Very Much Guys Tom
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post #2 of 3 (permalink) Old 03-17-2016, 02:33 PM
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Was not posting in 2012, but can let you know exactly what is happening. The front frame crossmember where the engine frame stands bolt, that area has slightly sunken in. Either that, or the entire front crossmember has fatigued slightly causing the mounted engine to settle.

Have had to solve this same problem several times, it's a pain, ESP forking the nut or bolts out from under the frame crossmember, then reinstalling.

Basic process goes like this
- unbolt the long motor mount bolts, lift the engine (personally, i prefer to carefully pull it out of the car).
- carefully unbolt the three nuts on each corner of "stretched triangular" frame stand,
- trace the pattern of the bottom of each frame stand onto cardboard, then onto 1/8" plate steel.
- cut the steel with a cutoff wheel or plasma cutter, and finish grind the edges.
- drill the three holes for each side plate, don't mix 'em up, taller frame std goes on drivers side.
- carefully sandwich the spacer between the frame crossmember and the frame stand.
will usually need to fashion a piece of old welding rod or to help line up each hole.
-carefully tighten the 3 bolts, lock washers, and nuts down.
-reinstall or lower down engine. if engines just being lifted, make sure and mark and remove distributor, so don't smack it up against the firewall. Going to only raise, also need the drop the head pipes and watch engine harness and clutch linkage.
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post #3 of 3 (permalink) Old 03-17-2016, 03:31 PM
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does your oil pan have "dimples" stamped on it to provide clearance of the centerlink like factory oil pans have? aftermarket oil pans don't seem to have them. not having the "dimples" on your pan causes clearance problems on some gtos. also sometimes when a power steering box is replaced with another box, the position of the pitman arm mounted on the replacement box will change how close the centerlink is to the oil pan slightly. this could also cause a clearance problem.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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