[Chevelle-list] Motor Mounts

[Jon Vore]

The 307 mounts are different for some reason. I ran into the same thing. You
can change the pedestals on the fram, but I don't see why you couldn't just
use 307 Motor Mounts on your 454. I believe the block side is the same
between BB/SB. Maybe someone else could answer that one for sure.

On Dec 5, 2007 1:40 PM, SLWeaver <slweaver at yahoo.com> wrote:

> Ausleys and others show the engine mount (frame) as the same part number
> for 68-72 cars  http://www.chevelle.com/catalog/index.php?cPath=57_125_223
>
> and energy suspension shows the motor mounts the same for 454, 396,  350,
> but differnet # for 307...
> http://www.energysuspension.com/pages/mt_tr3.html
>
> the truck motor mounts are also differnt form the chevelle motor mounts...
> are using chevelle/malibu motor mounts for the 454?
> becasue truck motor mounts are different number
>
> I do recall switching out the frame mounts on one car for whatever reason
> at one time but do not recall if the mount (it bolts to crosmemember and the
> motor mount sits on top) is any shorter/wider or whatever for big block or
> 307....you should call one of those guys above, or even the GM dealer. they
> are usually pretty helpful
>
>
>
> SLWeaver
>
>
> ----- Original Message ----
> From: "seventychevy at aol.com" <seventychevy at aol.com>
> To: chevelle-list at chevelles.net
> Sent: Wednesday, December 5, 2007 12:32:17 PM
> Subject: [Chevelle-list] Motor Mounts
>
> I've been reading the questions posted for the last couple of years and
> have one of my own.  I sold my last Chevelle 14 years ago when my son was
> born, so it's been a while- it feels good to be a Chevelle owner again.
>
> I recently purchased another 70 Chevelle to play with.  I have a 454 with
> TH400 from a 73 Chevy C10 that I will be swapping over but the motor mounts
> are different.  I purchased a set of mounts from the parts store but they
> don't fit down over the frame mount.  The frame mount is about 1/4" wider
> than the opening of the motor mount.
>
> I looked on-line at different suppliers and parts stores but they all
> appear to be the same part number.  Do I need different frame mounts or is
> there a different motor mount I'm not finding?  My step-father thinks there
> were two different motor mounts.  The Chevelle I have did not come with an
> engine so I don't know for sure what it had originally; it appears to have
> been a SBC.  From my searches it looks like the frame mount and motor mount
> for a 350 to 454 are the same and the motor mount for a 307 is a different
> style.
>
> Any help is appreciated.
>
> Eric
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