1984-1996 C4 Corvette

C4 Corvettes engine mounts changed in 1992 with the introduction the LT1 (Generation 2 SBC) engine. 1984-91 used a clamshell bolted directly to the block and bolted into a frame mount while 1992-96 used a hydraulic mount bolted to the frame and two additional motor mount brackets.

Rubber VS Poly? That is up to you. We prefer Poly motor mounts for any engine swap. The only downside to Poly is they don't absorb as much road vibrations as rubber.

Poly lasts longer
Molded-in safety interlock to prevent tearing
Less engine movement means more power delivery to the wheels

Energy Suspension Red VS Black? Black has graphite and has been reported to last even longer than Red. Red has had many reports of squeeking more than Black.

1984-1991

The original motor mount bolted to directly to the block and then you lower the entire block into the frame perches with a horizontal through-bolt. This will be bolted on to your conversion mount for a swap.

OEM Part Number: 17984449, 17984499 (NLA)

Afermarket Part Number: Anchor 2713 (Rubber)

Energy Suspension: 3.1172G (Poly)

LS GEN III/IV Conversion Mount Options:

DD-LS-DOUBLE-D-S (Steel)

(Starting out in raw non painted steel so make sure you paint them before the final install otherwise they will rust. Otherwise they are offered in black textured powdercoat for a small additional charge)