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Old 05-29-2008, 09:14 AM
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Chevy motor mounts won't line up in my Cutlass

Hello all. I've got an 84' Cutlass project. This is the 1st car I've ever completely disassembled and put back together. I came across this website a while ago and I've found answers to all my questions. This problem I'm having now has puzzled me for the last 3 days, please help.

The car had a Chevy 350 in it when I bought it. I pulled the 350, sold it and got a 383. The motor mounts that go on the frame were busted, driver and pass side. So I swapped them out for new mounts from parts store. The new mounts are for an 84' Monte Carlo. I put them on in the place where I outlined the old mounts. I lowered the engine and trans into the car. The driver side lined up perfect with the mount. I bolted it in. The pass side mount on the motor block wont line up. I then took the mounts off the frame and mounted them to the mounts on the block. I lowered the motor in again. It all lines up perfect with the bolt holes on the frame, but only on one side. The other side sits about an inch above the bolt holes. Whats the problem?
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Old 05-29-2008, 09:18 AM
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You should take some pictures, depending on the mounts you have on the frame of the car the passeger side may be upside down. Just a thought, but there are a lot of different mounts out there.
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Old 05-29-2008, 09:25 AM
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They cant be upside down because the top holes are 2-5/16" apart, while the bottom holes are 1-3/4". When I flipped them around, the holes on the bottom wouldn't line up with the bolt holes at the top.
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Old 05-29-2008, 04:26 PM
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Bolt the mounts back to the frame, keep the mount on the drivers side loose, dont snug the bolts. Lower the engine back in, get the bolt in the passengers side, then get a crow bar and get ready to fight like hell with the mount on the drivers side, you will have to insert it in the rubber of the mount and pry it upward until you can get it to line up enough to accept the bolt then tighten down the mount. Been there, done that on my 86 cutlass supreme.
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Old 05-30-2008, 12:14 AM
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Fight like hell is what I'm going to do if this next idea isn't correct.

I had a Chevy 350 in the car. I sold it and got a 383 that was previously in a 73 Impala. I sold the 350 with the upper mounts still bolted to the block. I've been trying to mount the 383 with the upper mounts that were used in the Impala. I believe I need to change the mounts that go on the block, engine mount brackets I believe they are called. If I get engine mount brackets from the boneyard or from parts store for a g-body Monte Carlo it should solve the problem.........I hope.
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Old 05-30-2008, 06:44 AM
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Quote:
Originally Posted by labreejr
They cant be upside down because the top holes are 2-5/16" apart, while the bottom holes are 1-3/4". When I flipped them around, the holes on the bottom wouldn't line up with the bolt holes at the top.

Like I said it depends on the mount, that particular one can't be upside down.

I would order a set of solid motor mounts from moroso and put them where ever you want. I have a set in my 65 buick and contrary to popular belief you don't even notice any vibration from the motor.
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Old 05-30-2008, 06:49 AM
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Sounds like ya need the correct clamshells that you sold with the other engine. Not all are created equal.
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Old 05-30-2008, 07:06 PM
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OK, I got it. Thank all of you for words of advise.

The motor mount brackets (the ones with 3 bolts that mount to the engine block) were too long. I got shorter ones from the yard that were on a Monte Carlo. Perfect Fit!!!
I want to post pics but can't figure how to downsize the pic to fit.
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Old 05-30-2008, 07:53 PM
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Quote:
Originally Posted by labreejr
I want to post pics but can't figure how to downsize the pic to fit.
I use http://imageshack.us you can resize while uploading
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Old 11-23-2010, 05:28 PM
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81 cutlass

which motor mounts off the monte v8 or v6 do you remember the part # im doing the same thing.
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Old 11-23-2010, 05:33 PM
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Quote:
Originally Posted by dbezzel
which motor mounts off the monte v8 or v6 do you remember the part # im doing the same thing.
He was just on here a few day's ago if he don't post back you could alway's send him a PM. JMO


Cole
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