PST or GM motor mounts? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BaggedC10 · 09-14-2004, 12:15 AM

Everything on my truck is polygraphite except the 4-link/panhard bar. How would PST units compare to GM mounts? More vibration or what? Thanks for any advice.

TIMSPEED · 09-14-2004, 01:32 AM

I dunno about GM ones..put I have a set of Energy Suspension Polyurethane motor mounts.

BaggedC10 · 09-14-2004, 03:01 AM

Did you notice a difference between the original and polyurethane units, Tim?

bluex · 09-14-2004, 08:56 AM

I have energy suspension poly engine and tranny mounts on my S10. When the a/c is on, or its idling in gear it is trying to shake itself to death. I will never have another set of poly engine mounts. I can only imagine how bad it would be if you had a good sized cam. Its really annoying, I want to change it back to rubber, but dont have the time or $$ as I have about $150 in these. They required custom made frame pads.

**swervin ervin** · 09-14-2004, 09:16 AM

I have Energy Suspension engine and tranny mounts in my 85. All I noticed was more vibration. When at idle you can feel the engine running but it doesn't shake itself to death by no means and I have a Comp XE268 cam.

TIMSPEED · 09-14-2004, 10:16 AM

I was always told, that if you run poly engine mounts, you MUST run a rubber tranny mount, or else SOMEWHERE SOMETHING will crack/break. I have more vibration than rubber, I'll say that..but it's not bad.

ocbaud · 09-14-2004, 10:15 AM

i have energy suspension engine mounts and the stock rubber tranny mount(for now). it does rock back and forth a little bit(tiny tiny bit). but i like it

SanitysBane · 09-14-2004, 09:04 PM

y not run solid motor mounts?

ocbaud · 09-15-2004, 12:34 AM

Quote:

Originally Posted by SanitysBane

y not run solid motor mounts?

to stiff for a truck that you would drive a lot(for most people anyways)

plumbcut · 09-14-2004, 09:22 PM

I run energy suspension polyurethane motor/spring/trans/body/swaybar etc etc and yes you will notice more vibration! Would I do urethane motor mounts again? probably.

If youre looking for ultra comfort in your vehicle, Id go rubber. just my 2 cents

pc

BaggedC10 · 09-14-2004, 09:31 PM

Thanks for the input, everyone. Looks like I'll be purchasing PST motor mounts soon.

09-14-2004, 12:15 AM	#1
BaggedC10 Under construction! Join Date: Aug 2002 Location: NorCal Posts: 1,065	PST or GM motor mounts? Everything on my truck is polygraphite except the 4-link/panhard bar. How would PST units compare to GM mounts? More vibration or what? Thanks for any advice. __________________ 2001 Silverado bagged on 22's. Sold

09-14-2004, 01:32 AM	#2
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	I dunno about GM ones..put I have a set of Energy Suspension Polyurethane motor mounts. __________________ I have a few cars... See Them Here

09-14-2004, 03:01 AM	#3
BaggedC10 Under construction! Join Date: Aug 2002 Location: NorCal Posts: 1,065	Did you notice a difference between the original and polyurethane units, Tim? __________________ 2001 Silverado bagged on 22's. Sold

09-14-2004, 08:56 AM	#4
bluex Registered User Join Date: Jun 2004 Location: Spartanburg, SC Posts: 1,963	I have energy suspension poly engine and tranny mounts on my S10. When the a/c is on, or its idling in gear it is trying to shake itself to death. I will never have another set of poly engine mounts. I can only imagine how bad it would be if you had a good sized cam. Its really annoying, I want to change it back to rubber, but dont have the time or $$ as I have about $150 in these. They required custom made frame pads. __________________ Paul '78 GMC Serria 15 Heavy Half. 361/NV3500/3.73. Former LWB NV3500 swap Trailing arm swap '98 ECSB Z71 daily driver -traded '03 burb. Family cruiser http://upstategmtrucks.com/

09-14-2004, 09:16 AM	#5
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	I have Energy Suspension engine and tranny mounts in my 85. All I noticed was more vibration. When at idle you can feel the engine running but it doesn't shake itself to death by no means and I have a Comp XE268 cam. __________________ Mike 1985 Chevy C-10

09-14-2004, 10:16 AM	#6
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	I was always told, that if you run poly engine mounts, you MUST run a rubber tranny mount, or else SOMEWHERE SOMETHING will crack/break. I have more vibration than rubber, I'll say that..but it's not bad. __________________ I have a few cars... See Them Here

09-14-2004, 10:15 AM	#7
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	i have energy suspension engine mounts and the stock rubber tranny mount(for now). it does rock back and forth a little bit(tiny tiny bit). but i like it

09-14-2004, 09:04 PM	#8
SanitysBane Registered User Join Date: May 2004 Location: Lubbock, Texas Posts: 2,121	y not run solid motor mounts? __________________ '96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer

09-14-2004, 09:22 PM	#10
plumbcut california fill Join Date: Apr 2004 Location: Sunny So-Cal Posts: 694	I run energy suspension polyurethane motor/spring/trans/body/swaybar etc etc and yes you will notice more vibration! Would I do urethane motor mounts again? probably. If youre looking for ultra comfort in your vehicle, Id go rubber. just my 2 cents pc

09-14-2004, 09:31 PM	#11
BaggedC10 Under construction! Join Date: Aug 2002 Location: NorCal Posts: 1,065	Thanks for the input, everyone. Looks like I'll be purchasing PST motor mounts soon. __________________ 2001 Silverado bagged on 22's. Sold



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