I've installed a 71 455 with 71 455 Delta engine mounts into my 68 cutlass with 455 pads purchased on Evil bay. I'm having difficulty aligning one of the engine mounts. I'm assuming this is typical alignment tweeking I need to do and not that I've got the formula wrong. Is this true? I thought I'd ask before I spent time trying to wrestle it into place. See Pics.

 

Just a tweek, loosen the bolts to the engine a little use a pry bar and align the holes and then retighten the bolts

 

I agree, lift the motor a little and the bolt should wiggle in.

Don

 

I know your are going to hate this. I had to get three different pairs of mounts for my 455 going in to a 72' cutlass. It was the same motor that came out and I even took the old pads up to the parts store. They look identical (out side of not beeing crushed), but just would not match up to pads. I ordered new ones for a 350 and they looked a little bit different kind of notched on both sides of the holes, like the lower side on your photos, but the holes lined up, and that is all that matters.

 

Sorry, but I fail to understand why this is always so hard. First, the rubber moves over time. Second, the mounts are flexible. Third, there are manufacturing tolerances in the whole car. You cannot simply set the engine in and expect the bolts to line up. Leave the mount-to-engine bolts loose, hold the engine on the hoist, wiggle the cross bolts into place, lower the motor, THEN tighten everything.

 

Same issue with my install. Very poor mount manufacturing makes it hard to find mounts that fit. I've found the pad pockets are not made deep enough to allow the bolts to align .In the end I used 1 new which was a perfect match to the old ones,and 1 old. I was not able to find another mount the same after 1 of the same company that was perfect and 3 other companies. What a pain.Good luck.

 

I took some photos today. To show you the ones I had to use. Bending, twisting, forcing and putting a round peg in a square hole is not my way of putting it together. Little easier when it fitts right.

 

looks very familiar. The distance between the bolt hole and the pad on the mount is too small. Is this correct? That's how mine were.

 

Little hard to follow your statement.
My rubber mounts were a tight fit, but nothing was cut, bent, or done to force it.

 

one word ...

Hammer ...

 

Did you get it fixed?

 

I have found on the '68 Cutlass that you have to use the small block frame mounts and the small block rubber mounts. After market mounts part mumber is #2261. That makes the big block sit just as low as the small block.

Gene

 

Just to be completely correct, for 1968 and earlier, the was no "big block" or "small block" mounts. There was only one design that was used for all motors (except the L6, of course) in the Cutlass line. Many aftermarket vendors incorrectly label the 69-72 mounts as 68-72. This is not correct, as you have pointed out.

 

will that work for a '70 ...

 

If your Cutlass is a small block, then use the small block mounts. Both frame mounts and rubber mounts. Direct fit on the big block. As "Joe" said '69 to '72. Use the parts for the V8 that came out.

Gene

 

Success!
Sorry for the long wait but this is my life. Mounting the engine took me 2 months and 1 day. Here's what happened (besides the dozens of soccer games, x-country track meets, boy scouts, girl scouts, brownies, and/or helping the in-laws or my folks. Thank goodness piano lessons and hockey are gone from my life (for now).
Anyway... I originally attempted to mount the 455 into my cutlass using the engine mounts that were on the used 455 I purchased. Knowing that my parts purchases were getting excessive, I tried cheaping out and re-using the mounts attached to the motor I bought. Wrong move.
After my troubles, I purchased new mounts thinking the old ones may have settled into whatever configuration they were installed. The new ones were much better. They still involved muscling the engine around to get the bolts lined up but things finally fell into place.
And yes. I left the mounts loose and tweeked the hoist every possible way to allow the engine to drop into place. So my recommendation to you. Don't cheap out.

 

One word Mugzilla: Hammer...

 

Why Olds did this I will never know why, but it should not matter.
Use whatever mounts are called for the car you have (be it a 455 or a 307 car). Remember that the engine wieghs 6-700 pounds, and these are flexible items. YOU WILL have to muscle them in. You may even scratch the frame paint. A tapered drift punch works wonders here-even a phillips screwdriver works well.
I have done BB/SB crossovers in 65,66,68,70,& 78's (a 260 car that got a 455 no less) and NEVER had a problem with an install.

All Olds V-8 were drilled in the exact same spot for the engine mounts.
Use the mounts for the car as it was originally made (V-8 only).