Engine bracket question

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These are 340 mounts same as you run. I don’t know what’s the right way to mount these brackets (hence the thread lol) because I had a /6 in this car prior so I have no reference for anything regarding this V8.
 
The correct way for drivers side is how you had it(less washers). My pic with bracket mounted is correct also. I think your hole could be messed up or the rubber block? I'll post pics of hole measurement on nos mount later.
 
When you get some time that’ll work great. One buddy has a 408 I took pictures of that has biscuit mounts and both of his brackets sit on the rear side of the block ears. So maybe my passenger needs to sit towards the front to counteract the d/s to make it straight? I guess it makes sense but I don’t know if it’s right to do.
 
Here is mine. 70 Dart with a V8 k member and factory 340 mounts. The thick one is passenger side.

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Interesting how come you used a thick biscuit on the passenger side? Is it needed?
 
Yes the brackets go on the backside of the lugs, with the majority of the bracket hanging down
If you install the biscuits upside down The little line-up nub won't fit in the second hole.
There is no room for a standard flat washer on the engine side of the bracket nor should one be used there; only the regular split spring loc-washer.

Notice again how the biscuit runs of the front edge of the bracket, and the frame-side stud is on the bottom-half of the biscuit.

Notice in post 29 the second pic, how the stud is angled wonky towards the front. Take a look at the metal behind it, and see the curvature. That bracket has been deformed from a [-channel into a (-channel. And because the mounting holes for the biscuit are so close to the front edge, it twists the biscuit.
I don't think that's a big deal......... until you tighten the nut and twist up the rubber. For sure I would straighten it out.
 
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In post #1 I would be very surprised if that P-side bracket was on rightside up; and if it is, it's not for a SBM-abody; the biscuit has to go closer to the water-pump end of the engine., and down further.
 
Im thinking swap rubber mounts side to side or they're upside down?
AJ/FormS said:
In post #1 I would be very surprised if that P-side bracket was on rightside up; and if it is, it's not for a SBM-abody; the biscuit has to go closer to the water-pump end of the engine., and down further.
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Almost looks like there is a "twist" in yours. Could be the pic tho. You can see in my pics it lays flat.

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The biscuits are not side specific.
And I 'm pretty sure not up/down specific either except that the divot on the back has to fit in the proper hole of the bracket. Notice the two holes are different sizes.
 
74Scamp said:
Interesting how come you used a thick biscuit on the passenger side? Is it needed?
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Sorry, I didn't get notified there was a response. No reason, other than that's what came in the kit I bought some time ago. The motor is in with Doug's headers and everything clears fine.
 
I never got notified about your guys responses so sorry for the delay...
4spd: Mine meaures .715” regarding your first measurement and .465” to the 2nd so mine is bent quite a bit more and looking at the picture it’s obvious. It lays flat but has a bend sideways. *pic for reference

AJ: That curvature you’re speaking of, you referring to where the biscuits sits or the side that mounts to the block? That piece has nothing really that’s a [ to it. To the p/s bracket, can a guy just drill new holes towards the front of it to fix the setting of the biscuit? The guy I bought them from knew I was putting them in a A body so I was thinking it would be clear that I would need mounts for one. How close are E body mounts to A body 340’s?

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furrystump said:
I don’t want to add confusion to an already confusing subject, but should the motor side of the bracket mount to the inside of the rear boss and front side of the front boss? That would move the mount about 1” forward which is about the distance it is off. I have no idea what mounts there are. I do know I have run stock 340 mounts on a 360 block with no issues, not sure it would be an issue. Like where the red lines are

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Can’t do that idea as there’s a gap between the last block ear but it would set that biscuit closer to the mounting hole.

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Is this the driver's side? If yes then
See now yer getting it; to install a 318 bracket on a 360 with the bracket behind the ear ; that is exactly what has to be done; just fill that space with a spacer and try again.
But if this is the P-side then the bracket is for the other side because the biscuit needs to be on the front edge of the bracket.

Take a look at the bracket in post 39. That is a driver's side bracket. You know how I know that? because it will put the biscuit towards the radiator.

Go back to post 29; those brackets on that engine, are both correctly installed behind the ears; and on both sides the biscuits are offset to the front; and the frame-side studs are on the lower half of the biscuit face..
If you have a 318 D-side bracket, mounted behind the ears, it will look like your pic in post 40, and you have to fab a spacer to take up the slack; some guys use washers.
If you can't get your parts installed like that, then your brackets and or your block, are not compatible. And I haven't run into that,so IDK


Waitaminuit, something's wrong here. Tell me if you can see it. The pics of the on-engine brackets are correct. The D-side biscuit is correct. The P-side biscuit is not correct for an original A-body. The D-side biscuit has been forced into that unnatural angle by the curvature of the bent bracket behind it.
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I can tell you that the pic of the brackets is somehow mirror-image reversed. I didn't catch it until I put the images side by side. The bottom two brackets on the RH side of the pic are for the P-side, and if you have a bracket that matches it with the holes as in the pic, then IDK what that bracket is for, the biscuit mounting holes are in the wrong place. I imagine you can make it work by redrilling the holes in the correct locations.
As for the D-side brackets on the LH side in the pic. The mirror image makes them impossible to use in your A-body.
 
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Yep #39 is the drivers side and #40 is the passenger side. No part number on the p/s bracket so idk if it’s a 318 but if it’ll work with the gap and have the engine sit right I will just make a spacer and move on lol
 
Ok but the brackets ALWAYS go on the transmission side of the engine lugs. If you spend the time to make changes with the brackets any differently, then after the trans goes on, you'll be starting all over.
 
Far as I know the pass side brackets are the same. That's why in reference pics with labels.on mounts, the pass side(rh in pic) look the same. The difference is in the drive side only.
Gimme a few and I'll get some more pics....we all love pics dont we??
 
AJ/FormS said:
Ok but the brackets ALWAYS go on the transmission side of the engine lugs. If you spend the time to make changes with the brackets any differently, then after the trans goes on, you'll be starting all over.
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Please don’t get frustrated lol but if I were to move that bracket to the front of the ears and make a spacer, why would I be starting all over again with the trans? It wouldn’t move the engine that far forward, just the right side up more to make it even in the engine bay not? I just have to ask.
 
So I think I have my bracket issue figured out...the passenger side bracket biscuit holes needs to be redrilled so the biscuit bolt moves fowards. I know the bracket is on wrong but with it being like it is the engine is centered and not offset in the car. * first pic

Secondly I’m fighting the k frame/ biscuits so that they sit flush on each other. I have a gap on either side with the engine lifted and if I let the engine down, only one side will sit almost flush. My question is, do I need the thicker mounts now to fill the gap or do I lengthen the k frame slot a little bit so the biscuits can sit down further? What cars needed a thicker biscuit? I’m afraid tho if they sit down too far the oil filter will hit the torsion bar as well.

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