Anyone running solid motor mounts?
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Anyone running solid motor mounts?
I'm in the middle of an LS swap. My adapter plates move the motor up about 1/4" from stock causing trans tunnel clearance problems. Flipping the plates would allow me to drop the motor 1/4" from stock.
Problem is that the rubber or poly motor mounts dont look like they would hold mounted upside down.
So I'm guessing I can use solid mounts upside down. Anyone using them? What's the downside, just more vibration? Is it that bad?
Problem is that the rubber or poly motor mounts dont look like they would hold mounted upside down.
So I'm guessing I can use solid mounts upside down. Anyone using them? What's the downside, just more vibration? Is it that bad?
Racer
Joined: Apr 2005
Posts: 259
Likes: 45
From: Columbus Mn
I switched to solid motor mounts years ago. I was constantly ripping my rubber ones in two. I'll never go back. I honestly can't say I noticed any significant increase in vibrations. My favorite benefit was my header and collectors don't loosen up and create leaks. I've seen this question posted before. Try a search. Good luck.
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Yep, I did a search. A lot of posts about changing to them, then not much followup. Also, this is for an iron LS block. I'm assuming the 4 mounting points and cross bolted mains are better for stress on the block compared to a SBC. Wondering if anyone else had an opinion on this?
I switched to solid motor mounts years ago. I was constantly ripping my rubber ones in two. I'll never go back. I honestly can't say I noticed any significant increase in vibrations. My favorite benefit was my header and collectors don't loosen up and create leaks. I've seen this question posted before. Try a search. Good luck.
Pro
Joined: Oct 2005
Posts: 541
Likes: 1
From: Freeport FL
I love mine. Made by Moroso. Got them at Jegs I think. People said I would have vibration, but I dont, and I feel sooo much safer that my supercharged 383 isnt going to come flying out unexpectedly one day 
Get you a VBP spreader bar too. Excellent company to work with.
Get you a VBP spreader bar too. Excellent company to work with.
3rd Gear
Joined: Mar 2009
Posts: 3
Likes: 0
Hi new here to this great forum and this guestion caught my eye as I'm now tossing this very guest. around The info I've rec. is that sold mounts are fine for around 500 hp and down.After that block distortion comes into play.This has made me think of motor plates,being a drag only car.As always everone has a diff. opinion.
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
I've had Moroso solid mounts on every BB I've had in my '78, and would assume the reason for the relative lack of follow up being posted after installation is that there's pretty much no downside about which to complain. Strongly suggest the spreader bar, too. Agree about possible plate(s) for high power drag applications.
TSW
TSW
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Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
FYI, Moroso #62530 appear to fit all C2 & C3 applications. If you don't have a local speed shop source, Jeg's or Summit ought to have them for under $30. BTW, do NOT install a solid transmission mount, unless you happen to like cracked housings...
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Unless you've got a 'glide or an M-40 automatic transmission, one cushion apparently fits all C2/C3's. I'll see if I can get you a GM #; Paragon's is #1519 for $9
edit - GM #3913498
edit - GM #3913498
Last edited by TheSkunkWorks; Apr 15, 2009 at 04:59 PM.
Race Director
Joined: Apr 2000
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Burning Brakes
Joined: Sep 2005
Posts: 895
Likes: 4
From: whitman massachusetts
Poly Mounts
I need to purchase some poly mounts. Sounds like you have put yours to the test. Could I get a brand and part number if you are running a small block?
Thanks