b71vette

Which should I use when I install the body back on my 71 vert ? Original was metal but I was thinking about using the poly.

I am using solid motor mounts due to the torque of the stroker engine and was thinking the poly would help isolate some of the vibration to the interior/body.

Eddie 70

I have used poly on all of my suspension bushings. If I were to redo the body mounts I believe I would go with rubber to isolate the body from some of the noise. I believe Zwede has done the aluminum stock to rubber change. Maybe he will chime in on his experience with this.

b71vette

probably would be better to reduce vibrations, do u think it would affect body roll very much ?

wills670

You may not notice body roll but a question I have concerns about is.
What will this do to the body? With the body on rubber or poly would that allow enough deflection to cause stress at the bummper mountings. The bumpers are mounted directly to the body and frame and I dont think it would be very forgiveing haveing the body and frame moveing in seperate directions. Just trying to give you something to think about.

MYBAD79

Just take one body mount poly cushion and try to squeeze it in a vice - you'll be surprised how stiff that material is.

GDaina

I replaced the aluminum with rubber when I pulled the body on mine...no more jarring when going over a small bump. Best thing I ever did.

I'm Batman

Have fun replacing those rubber parts again in 5 years.

GDaina

No difference between aluminum and poly mounts, except poly is plastic and aluminum disintegrates. The ride will be harsh with either mount. I wonder how the plastic will hold up in a 5-10-15-20 year span.

When I pulled the body in '75, the aluminum mounts were in 1000 pieces. The rubber mounts I put in are in great shape today, and if I were to pull the body, without reservation, I would use rubber.

b71vette

rubber right now. I am going to touch base with Zwede to get his recommendation.

thanks all for your help