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Bad over-the-counter bigblock motor mounts. #2739159
02/02/20 08:03 PM
02/02/20 08:03 PM
Joined: Feb 2003
Posts: 3,691
MO
C
cdp Offline OP
master
cdp  Offline OP
master
C

Joined: Feb 2003
Posts: 3,691
MO
Anyone have problems with replacement 70/71 bigblock B-body motor mounts?

I've purchased 2 sets, Pioneer off Amazon, and Oriellys brand. Both are the same issue (appear to be same supplier). Thru bolt holes/nut on motor mount are 1/4" off when compared to the originals (3/4. Due to this, the engine does not seat fully on the K-member pad. I went to Rock Auto and found 4 to 6 versions. Upon viewing the 3d views, you can clearly tell the thru holes are out of location.

Re: Bad over-the-counter bigblock motor mounts. [Re: cdp] #2739177
02/02/20 09:29 PM
02/02/20 09:29 PM
Joined: Aug 2004
Posts: 2,085
New Mexico
J
JMCFAN Offline
top fuel
JMCFAN  Offline
top fuel
J

Joined: Aug 2004
Posts: 2,085
New Mexico
Originally Posted by cdp
Anyone have problems with replacement 70/71 bigblock B-body motor mounts?

I've purchased 2 sets, Pioneer off Amazon, and Oriellys brand. Both are the same issue (appear to be same supplier). Thru bolt holes/nut on motor mount are 1/4" off when compared to the originals (3/4. Due to this, the engine does not seat fully on the K-member pad. I went to Rock Auto and found 4 to 6 versions. Upon viewing the 3d views, you can clearly tell the thru holes are out of location.


Yes...1st set I purchase had my motor sit shifted ...after checking you could see the difference... bought a good set from Brewers...

Last edited by JMCFAN; 02/02/20 09:29 PM.

68 Charger 383/ AT Green/Green VT
70 Roadrunner 383/4sp Purple/Black VT
Re: Bad over-the-counter bigblock motor mounts. [Re: JMCFAN] #2739185
02/02/20 09:50 PM
02/02/20 09:50 PM
Joined: Mar 2003
Posts: 18,677
Fresno, CA
Jim_Lusk Offline
I Live Here
Jim_Lusk  Offline
I Live Here

Joined: Mar 2003
Posts: 18,677
Fresno, CA
Current parts store motor mounts are pure junk.

Re: Bad over-the-counter bigblock motor mounts. [Re: Jim_Lusk] #2739209
02/02/20 11:12 PM
02/02/20 11:12 PM
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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CMcAllister Offline
Mr. Helpful
CMcAllister  Offline
Mr. Helpful
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Joined: Dec 2005
Posts: 11,408
Fulton County, PA
Offshore trash. So hard to find decent stuff anymore.


If the results don't match the theory, change the theory.
Re: Bad over-the-counter bigblock motor mounts. [Re: cdp] #2739211
02/02/20 11:20 PM
02/02/20 11:20 PM
Joined: Jan 2003
Posts: 1,800
North Dakota
Azzkikrcuda Offline
top fuel
Azzkikrcuda  Offline
top fuel

Joined: Jan 2003
Posts: 1,800
North Dakota
Most of the new mounts are junk now. I have been using NOS mounts lately. They cost more but fit and hold up better.


The only Carbs I care about are under the hood!
Re: Bad over-the-counter bigblock motor mounts. [Re: Azzkikrcuda] #2739216
02/02/20 11:47 PM
02/02/20 11:47 PM
Joined: Nov 2003
Posts: 893
illinois
R
rbkt65 Offline
super stock
rbkt65  Offline
super stock
R

Joined: Nov 2003
Posts: 893
illinois
i traded for a couple of mounts that may need new inserts . are the inserts junk also?







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