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Old 01-22-2017, 08:10 AM   #1
kameltoes2015
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Motor mounts

I bought and installed these motor mount from Scotts Hotrods, sweet looking mounts BTW. The concern I have is when I stomp in it will it stress the mounts and or the frame? Do I need to add gussets or some kind of reinforcement to spread out the load. The frame is boxed and the engine is a SBC 350
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Old 01-22-2017, 10:09 AM   #2
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Re: Motor mounts

Bigger is better
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Old 01-22-2017, 10:26 AM   #3
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Re: Motor mounts

It looks like you have the engine centered in the frame, but before you get too far along with welding in gussets... check clearances around the steering box & your exhaust manifolds or headers. Now is the time to eliminate future interferences.
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Old 01-22-2017, 10:46 PM   #4
kameltoes2015
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Re: Motor mounts

Thanks for the reply. Prior to setting the engine, I had the headers on. I don't have the steering box as of yet so I could not account for it...you live and learn and them get out a big hammer and make it work.
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Old 01-23-2017, 03:49 AM   #5
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Re: Motor mounts

I think I saw some of those double tube weld on mounts on speedway last week and there were a few reviews talking about broken mounts on the tube side, I will try to find it again. I would at the very least cap across the two steel brackets but the direction of force is in line with the tube and brackets so you should be ok.

from the factory most engines are offset to the passenger side, not just for steering clearance but also to put a little angle on the driveshaft in the x plane because the pinion on the rearend is centered on chevies.
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Old 01-23-2017, 06:00 AM   #6
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Re: Motor mounts

If it were me, I would weld a plate connecting the two frame tabs to one another, and I would add a gusset between the two tubes on the engine side, also welding it to the base plate. That would brace everything and add a lot of weld connecting those two skinny tubes to the base plate.
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Last edited by Jesse Z; 01-23-2017 at 06:09 AM.
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Old 01-23-2017, 11:41 AM   #7
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Re: Motor mounts

Interested in this topic. I have the same motor mounts from Scotts. I had to modify them by cutting the tubes off the plate and repositioning them so I could get steering shaft and header clearance on driver side. I modified passenger side to match. I think moving the mount forward added stress since the engine is no longer balanced forward to back. Also had to weld a third time to get it right hopefully it's not brittle from repeated welding. Also had to notch one of the tabs for shaft clearance. But we all tend to overengineer because we want to be sure. I doubt Scott's would sell poorly designed mounts.
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Old 01-23-2017, 11:46 AM   #8
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Re: Motor mounts

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Old 01-23-2017, 01:08 PM   #9
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Re: Motor mounts

found it. same type of mount

http://www.speedwaymotors.com/Chevy-...unts,1906.html
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Old 01-23-2017, 01:11 PM   #10
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Re: Motor mounts

I dont think you'll have any problems with those mounts with a SBC 350, thats pretty much all they were designed for. in comparison to the stock mounts that were only punched steel plates these will work nice.

Granted the mount will ONLY be as good as the 'weld' you put onto the frame rail.


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Old 01-23-2017, 10:53 PM   #11
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Talking Re: Motor mounts

Thanks for all the feedback. I just had a concern and wanted to get your thoughts. You guys have a wealth of info and experience on this site.
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Old 01-24-2017, 02:21 PM   #12
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Re: Motor mounts

I would think putting a 1/8 inch L shaped "pad" on your frame a few inches bigger than your mounting tabs, would be much stronger....
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Old 01-25-2017, 02:23 PM   #13
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Re: Motor mounts

I got my mounts like that from Scotts. They more substantial than the ones in the first post and were painted black. They cost me almost twice as much as the Speedway price which makes me wonder if those aren't cheap knock-offs.
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Old 01-28-2017, 06:55 PM   #14
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Re: Motor mounts

that's not much for holding a motor in, those rod welds look pretty but not much penetration
i'd weld them like jesse z mentioned on both sides and i'd throw those tabs away and make some frame width 10 gauge triangles and box them in
then you'd have a motor mount
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Old 01-28-2017, 07:51 PM   #15
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Re: Motor mounts

Quote:
Originally Posted by joedoh View Post
I think I saw some of those double tube weld on mounts on speedway last week and there were a few reviews talking about broken mounts on the tube side, I will try to find it again. I would at the very least cap across the two steel brackets but the direction of force is in line with the tube and brackets so you should be ok.
I doubt you would have that problem with the ones from Scotts, they tend to over engineer and over build what they sell in the name of it holding up.
You aren't going to get a Speedway price on it though.
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Old 01-29-2017, 02:13 PM   #16
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Re: Motor mounts

I've used some Chassis Engineering mounts. They are about as beefy as it gets, not as pretty as Scotts, but they get the job done.

http://www.chassisengineeringinc.com...ounts-19-inch/

http://www.chassisengineeringinc.com...e-cushion-set/

http://www.chassisengineeringinc.com...er-3-5-8-inch/

I actually used the 6 Cylinder mounts and bolted them to the frame, vs. welding.

http://www.chassisengineeringinc.com...h-194-230-250/
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Old 03-17-2017, 10:33 AM   #17
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Re: Motor mounts

Quote:
Originally Posted by whitedog76 View Post
I've used some Chassis Engineering mounts. They are about as beefy as it gets, not as pretty as Scotts, but they get the job done.

http://www.chassisengineeringinc.com...ounts-19-inch/

http://www.chassisengineeringinc.com...e-cushion-set/

http://www.chassisengineeringinc.com...er-3-5-8-inch/

I actually used the 6 Cylinder mounts and bolted them to the frame, vs. welding.

http://www.chassisengineeringinc.com...h-194-230-250/
Any pictures of the 6 cyl mounts installed?
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Old 03-17-2017, 05:15 PM   #18
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Re: Motor mounts

BTW- it's not a V8.

I made the mount on the block from 3/8 plate and 3/16 steel. I left it long in case I want to re-drill and move the engine back.
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Old 03-17-2017, 07:18 PM   #19
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Re: Motor mounts

That's what I am going to do with the 292 six going in my 48. Not quite the same as the mounts being discussed in the thread though. Those are as much for the trick look as function.
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Old 03-18-2017, 12:47 PM   #20
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Re: Motor mounts

Quote:
Originally Posted by SideStepper View Post
It looks like you have the engine centered in the frame, but before you get too far along with welding in gussets... check clearances around the steering box & your exhaust manifolds or headers. Now is the time to eliminate future interferences.
Words of wisdom right there.

Took me way too long to cut mine out and reweld after the new headers wouldn't clear the passenger side A arm.
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