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Tech Editor's DeskProjects, papers, writings, thoughts, musings of our technical editor Joe Padavano. To begin with, he will be making threads and can approve posts to it if he wishes. This can be changed in the future if it does not work out well.
Actually, the frame-side mounts are bolted to the frame, not riveted.
This is why I suggested the Chevy clamshell mounts. These put the rubber on the frame side, and since the rubber does deteriorate, replacements are readily available. Anchor P/N 2387 are used on the 403 Trans Am as well as on a bazillion Chevy applications,
The 403 block-side brackets to mate with these are also pretty readily available. People who are pulling the 403s out of their Pontiacs sell them all the time on ebay, and reproductions are also available.
joe,
this is a two piece correct? is the straight bar required to be used? or can just the piece that cross bolts to the frame mount be used?
Last edited by naphtali5725; March 4th, 2015 at 05:21 AM.
this is a two piece correct? is the straight bar required to be used? or can just the piece that cross bolts to the frame mount be used?
Yes and yes. The straight bar bolts to the three motor mount bolt holes in the Olds block and has two studs that the U-shaped bracket bolts to. There's no other way to attache the U-bracket to the block.
Yes and yes. The straight bar bolts to the three motor mount bolt holes in the Olds block and has two studs that the U-shaped bracket bolts to. There's no other way to attache the U-bracket to the block.
Great thread! Thanks to Joe. I know this has been brought up before. But I can't find good quality mounts. My 71 Cutlass 350 had sagged so much the oil pan hit on the crossmember. My 70 Vista 350 had a small aftermarket flex fan on it when I bought it and when I attempted to put the original factory type clutch fan back on it, I found the mounts had sagged. I had to replace them to get the fan on. Now after 5 years or so I can tell the mounts in the Cutlass have started to sag again. Also the motor mounts on my 65 Coronet big block had sagged causing the headers to hit on the pitman arm. I finally replaced those with Schumacher polyurethane mounts and it raised the engine 3/4 inch. But I hate those! Car shakes like it has solid mounts! Anyone know of higher quality mount available?
Great thread! Thanks to Joe. I know this has been brought up before. But I can't find good quality mounts. My 71 Cutlass 350 had sagged so much the oil pan hit on the crossmember. My 70 Vista 350 had a small aftermarket flex fan on it when I bought it and when I attempted to put the original factory type clutch fan back on it, I found the mounts had sagged. I had to replace them to get the fan on. Now after 5 years or so I can tell the mounts in the Cutlass have started to sag again. Also the motor mounts on my 65 Coronet big block had sagged causing the headers to hit on the pitman arm. I finally replaced those with Schumacher polyurethane mounts and it raised the engine 3/4 inch. But I hate those! Car shakes like it has solid mounts! Anyone know of higher quality mount available?
Unfortunately there are no polyurethane mounts for Olds motors that I am aware of. Supercars sells very nice Olds mounts, though I have no first-hand experience with them. Other Olds vendors sell reboxed Anchor/Pioneer Chinesium mounts at far higher prices than RockAuto.
1964-1968 frame mounts (all) - use P/N 2261 motor mounts
1969-1972 SBO frame mounts - use P/N 2261 motor mounts
1969-1972 BBO frame mounts - use P/N 2328 motor mounts
1973-1988 frame mounts (all) - use P/N 2328 motor mounts
This is good info, my understanding is that PN 2261 is roughly 1-5/8 from mount engine mount hole to center of frame mount hole, PN 2328 is 2-1/2, you can also use PN 2286 which is a ford/mercury part number and it measures right under 2 inches. I actually ran that on my BBO for the last year. So it's in between the Olds mounts but still fits.
I'm getting ready to change to the taller mount so I have a spare set that I would be happy to send you Joe for verication just to put into the data bank of what fits and what will work I can see where this might be beneficial for some people doing engine swaps
Last edited by real57vetteguy; July 19th, 2015 at 09:06 PM.
Anyone have a source for the single front, and double rear (transmission) rubber mount cushions for Toronado?
I re-used the mounts that came with the car, but I expect they're original 1966 items. They're due for replacement.
Unfortunately, no one makes replacement motor mounts for these cars (though everyone incorrectly lists the Delta 88 mounts for the Toro). Your only options are to find good used ones or to have your originals re-vulcanized by Steele Rubber.
I wanted to add this here so it's documented in the motor mount sticky. Here are a 2261 and 2328 side-by-side with the correct frame pad for each. I've tried to match scale and line up some reference points. Unfortunately, the photos are not quite at the same angle, so there's a little distortion. Note that relative to the bolts in the frame (which are the same in both cases), the motor mount bolt holes in the block are in exactly the same place. Also note how the 2328 wraps down under the oil pan rail and is closer to the pan than the 2261. The lesson there is that if you have an aftermarket pan, you might want to use 2261 mounts and matching frame pads for a little extra clearance. On the other hand, 2328 mounts provide a little more room for headers.
Previous 403 villian where a 455 should call home!
Understand the A bodies have the bolt going down and are unique... do those bolt down through the frame? My W30 had a "403" swap (apparently
- a rescued parts car...)
I assume the current incorrect mount covers the needed holes? Every other car I have is a 350 or a parts car. A pic of what it should be would be really helpful (installed view)... thanks. Brian
I'm not sure what you mean by "bolt going down". The only Olds motor mounts with a threaded stud that goes through the frame are the ones for the 1964 and 1965-70 full size cars (photo below). The mounts in the photo you posted are correct for the 2328 motor mounts used on the 1969-up BBO A-body cars and all 1973-76 A-body cars with any Olds motor.
This is the 2262/2263 style mount for the 65-70 full size cars only.
On Summit is shows these for the 70 Olds 442 W30 and other websites so that is my confusion! If these are incorrect... that is great news. I am good to go then. Trying to get it right and motor mounts I have never got a straight goods answer. Thanks!
The 2328 like ones are what I have been pulling off my big block parts engines and was so hoping that is correct. I have hesitated so many times to order new for my W30 resto as I was never sure. Yep, you list is clear but of course is contradicted by many websites. I'll take your list as the gospel. The bolt downward just confused the hell outta me. Take it easy!
Hello to all, new to Olds. Question I have that I haven't seen yet is which 2 bolt holes on the block do you use. Doing a resto mod on a 71 Cutlass conv. that had a 350 in it but I'm swapping in a 455. Car came with no engine and 455 came with no mounts attached to it. Just trying to avoid redoing it if I choose the wrong location from the beginning.
Appreciate any help given.
Hello to all, new to Olds. Question I have that I haven't seen yet is which 2 bolt holes on the block do you use. Doing a resto mod on a 71 Cutlass conv. that had a 350 in it but I'm swapping in a 455. Car came with no engine and 455 came with no mounts attached to it. Just trying to avoid redoing it if I choose the wrong location from the beginning.
Appreciate any help given.
Welcome. The A-body cars use the rear two of the three motor mount bolt holes in the side of the block. And hopefully you didn't buy "455" motor mounts. If your Cutlass has the original frame pads get Anchor 2261 mounts.
Thanks for the quick response. No, I actually had the 2328 mounts until reading all this. I ordered the 2261mounts now. Thankfully they were both rather cheap.
Thanks for the quick response. No, I actually had the 2328 mounts until reading all this. I ordered the 2261mounts now. Thankfully they were both rather cheap.
Be sure your chassis has the original frame pads. Scroll up to the first page in this thread for photos.
January 30th, 2015, 12:12 PM
