Original long bolts for 1969 L/78 motor mounts

nuch_ss396 · February 13, 2009, 11:49:56 PM

Big block Camaro's had a unique motor mount that used a threaded receiver on one side. This meant that a nut was not required to secure the long bolt.

I have an original pair of these rare motor mounts and I will be hunting the correct original bolts that were used in conjunction with these mounts. Can anyone
post information on these bolts? I need to know correct head markings, overall length, bolt head style, etc........ An image or two would be fantastic.

Can anyone shed any light?

Nuch

nuch_ss396 · February 22, 2009, 01:30:33 PM

Just a follow-up to my original post on this topic. I was surprised by the number of views, but
no responses.

I did get a few PM's though. Many thanks for those. Maybe the correct original
setup is more rare than I thought. In any event, I have been eagerly looking into this on my
own and I've purchased several original correct items ( I believe ) over the past two weeks.

Shortly, I will post more images to show all of the original components in the original big block
motor mount setup. These will include frame mounts, motor mounts, stop bracket, standard
long bolt & washer for passenger side and odd-ball longer bolt, lock washer, flat washer, bushing,
flat washer setup for the drivers side. I'll have some questions for the group once I post everything.

Through all of this I was able to finally make sense of the AIM page on this topic as well.

Steve

Pex68 · February 22, 2009, 01:38:06 PM

Thanks Steve, interested to see what you came up with! Please keep us posted

nuch_ss396 · February 28, 2009, 06:40:50 PM

Here is the AIM page pertaining to the big block left hand motor mount assembly.
The part highlighted in red is the odd locking bracket I referenced initially.

Parts List:

nuch_ss396 · February 28, 2009, 06:44:30 PM

Here is the AIM page pertaining to the small block ( Z/28 & SS-350 ) left hand motor mount assembly.
The part highlighted in orange is the small block version of the locking bracket.

Parts List:

nuch_ss396 · February 28, 2009, 06:47:46 PM

Here is the AIM page pertaining to the standard 8-cylinder right hand motor mount assembly.

nuch_ss396 · February 28, 2009, 06:51:12 PM

I will be posting images of the motor mount components shortly.

Nuch

nuch_ss396 · February 28, 2009, 07:35:19 PM

Original big block left hand motor mount assembly:

Close-up view of bolt & locking bracket assembly:

nuch_ss396 · February 28, 2009, 07:38:53 PM

Original 3950113 left hand engine frame bracket:

nuch_ss396 · February 28, 2009, 07:41:24 PM

Original motor mount ( NOS ) 3920627:

Close-up of threaded receiver:

nuch_ss396 · February 28, 2009, 07:42:46 PM

Original stop bracket 3977983:

nuch_ss396 · February 28, 2009, 07:47:14 PM

Original big block right hand motor mount assembly:

Close-up view of bolt:

nuch_ss396 · February 28, 2009, 07:50:21 PM

Original 3950114 right hand engine frame bracket:

nuch_ss396 · February 28, 2009, 07:52:03 PM

3950113 & 3950114 engine frame bracket comparison ( notice the height difference - left side is taller ):

nuch_ss396 · February 28, 2009, 07:55:34 PM

Original long motor mount bolt components ( SEE PART LIST FOR NUMBERS ):

News:

Original long bolts for 1969 L/78 motor mounts