Re: Big Block Engine Mounts
[Re: Beep Beep]
#1562441
01/13/14 12:16 AM
01/13/14 12:16 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Maybe not helpful to your situation, but are the Poly Lock types thicker than your original mounts? I considered the Poly Locks but thought that they would aggravate my already dicey hood clearance issue. I looked at some parts store replacement mounts and found that they appeared to be about 1 1/8" to 1 1/4" thick. The mounts in my car are thinner than that by a noticeable amount. My LH side is an interlocking type and looks to be about 7/8" thick. I can't recall if it was rubber or urethane. I used a quality NON interlocking RH mount that actually failed first. That surprised me since I don't recall hearing of a RH failing before a LH mount. I replaced the broken RH one with an OEM spare I had laying around. It ended up causing the drivers side of the engine to sit lower, resulting in header-to-steering box contact. Anyhow, it may be that your replacement mounts are too thick, causing a misalignment. https://board.moparts.org/ubbthreads/show...e=6#Post7987159
Last edited by Frankenduster; 01/13/14 12:20 AM.
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Re: Big Block Engine Mounts
[Re: Kern Dog]
#1562442
01/13/14 01:57 AM
01/13/14 01:57 AM
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Joined: Jan 2007
Posts: 2,431 SK,Canada
gregsrt
top fuel
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top fuel
Joined: Jan 2007
Posts: 2,431
SK,Canada
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check the thru bolt that goes through the insulator. Mine was just hitting the block and would not allow it to sit correctly and get all the bolts thru. I struggled for a few hours before removing the mount and seeing a mark on the block. cut the bolt down about 1/4 inch or so and it slipped right in. I almost Lol
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Thomas Jefferson
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Re: Big Block Engine Mounts
[Re: Beep Beep]
#1562444
01/13/14 05:26 PM
01/13/14 05:26 PM
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Joined: Feb 2003
Posts: 18,582 Rust Belt, SW PA
Silver70
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
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The trans crossmember will let you move it side to a little, depends on how far you have to go, but you could loosen the 4 bolts and the one on the trans rubber mount and try it.
68 Road Runner, 69 Belvedere, 71 Challenger Vert 340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z 66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram
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Re: Big Block Engine Mounts
[Re: Beep Beep]
#1562447
01/17/14 05:04 AM
01/17/14 05:04 AM
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Joined: Aug 2004
Posts: 214 Hamburg / Germany
Den300
enthusiast
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enthusiast
Joined: Aug 2004
Posts: 214
Hamburg / Germany
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I had the same problem. after 1/2 day I got them installed. After one weekend at the darg strip they melted at the passenger side. (some inches away from the headers). Right now I am running only one at the driver side. Would never buy them again. I think the HD from Mancini are a better option. Personally I would not use any tranny mounts in PU unless your chassis is ultra stiff. I would be afriad to brake the trannys neck.
Hamburg/Germany
69 Chrysler 300 446cui Dual Quad 12.64 @ 110.7
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Re: Big Block Engine Mounts
[Re: 71X-mark]
#1562454
05/23/14 06:52 PM
05/23/14 06:52 PM
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Joined: Jan 2003
Posts: 338 Montreal Quebec
STROKIE
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 338
Montreal Quebec
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Quote:
I have 'mitymounts' in my '71GTX and have had no issues. These are positive locking mounts that appears to mimic the dimensions of the stock mounts. They are made by DynaTech Engineering, LLC. You can check them out at www.mitymounts.com.
I use MityMounts on my 451 stroker, those motor mounts are on regular stress with no failure since years...
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