Check the service manual frame diagram it will show how many mounting points each body style has.
I'm not sure that its going to make a lot of difference rubber vs poly. Both are very dense - rubber is almost as hard as a frozen hockey puck - and then you tighten them down so very little movement.
Also most originals lasted a long time thru 4 season driving with salt etc vs now only warm, fair weather driving, so no longevity concerns.
Maybe someone makes the polyurethane ones with graphite strands, molded in.
- saw them advertised in Muscle Car review, many years ago / apparently, designed to minimize or stop squeeks
I've read that polyurethane last longer but can produce annoying squeaks. I'd really appreciate any opinions based on first-hand experience.
I've heard about poly arm bushings, trans mounts, and body mounts squeaking if not lubed up adequately when installed (with the supplied grease) ... but no problems if you lube them up well.
Convertibles have more (12) mounts than hardtops/sedans (8) for my car (1964). What year/type Parisienne have you got Rod?
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
Re-pro rubber (inferior offshore rubber) ... have been reported.... to squash down. and not sit as original...
I just replaced rear mounts and rad support with Poly
__________________
Prince Edward Island
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
... but then you have "old" rubber, possibly past it's shelf life.
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Prince Edward Island
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
If you have a '67 hardtop, you need a '65 - '70 Impala hardtop/sedan kit. One of the better makes is Prothane: http://prothane.com/vehicle-applications/ but there are others like Energy.
-- Edited by Pontiacanada on Friday 23rd of January 2015 06:53:44 AM
__________________
Prince Edward Island
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
