THE Chevelle
ONLINE INTERCHANGE MANUAL: CHASSIS SECTION
ENGINE MOUNTING (Chevrolet
V8)
It
is important that the frame mounts that secure the engine should match
the motor used, and this is important in which certain components like
header clearance and clutch linkage angles are maintained. The part numbers
that I have listed for Chevrolet engines are discontinued by GM, but the
only way is to find a set that are either NOS or as a reproduction.
*There
are two frame mounts that are common with the Chevelle, and the Chevrolet
part numbers cover both the 1964-67 and 1968-72 vehicles. P/N 3872815/3872816
fits 1964-67 Chevelles with big blocks, and the small block counterparts
are P/N 3840715/3840716.
Not
much is known about the mounting hardware, since the part #s were abstracted
from Super Chevy magazine.
*1968-72
frame mounts use two different mounts to mount the V8, and the most common
mount that is used are P/N 3980711 and 3980712. 307-powered cars used frame
mounts 3980707 and 3980708.
The
307 frame towers, P/Ns 3980707 and 3980708, are taller and wider than the
non-307 frame towers, P/Ns 3980711 and 3980712. The non-307 frame
towers locate the engine a 1/2" lower in the engine bay. The engine
cushions are specific to the frame mounts listed above.
The only completion of mounting a Chevrolet engine into any A-bodied car
will require the correct engine cushions, and aftermarket companies like
TRW will manufacture the OEM style cushions, or the solid mounting hardware
available from Moroso will fit in place of the rubber cushions, but this
will wreak havoc on certain components like trannies and the driveshaft.
Copyright 1997, 1998, 1999, 2000 LSC Publications/LSCSETX
(c/o
DON SERIBUTRA). All Rights
Reserved. This page will continue to evolve if any pertinent information
is detrimental to the restoration of the GM A-body.
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