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04-29-2006, 09:24 PM
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#1 |
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All Praise RANDY!!
Join Date: Sep 2004
Location: Central California
Posts: 391
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HELP!!! Which type of motor mounts??
Ok, re-searched this on the site a bit, but thought I would ask again:
What type? Rubber or Poly? What year should I use? Specific to a 72? or should I go with the 73 and newer? Pros and cons please... Oh, I am putting a slightly modified 350 in with more torque than horsepower and nothing too serious! low 300 horsies... Future plans would include a new 700r4, and I know you are supposed to keep the motor and tranny mounts of the same type, RIGHT? Thanks one and all! Bill |
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04-30-2006, 04:16 PM
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#2 |
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All Praise RANDY!!
Join Date: Sep 2004
Location: Central California
Posts: 391
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Re: HELP!!! Which type of motor mounts??
TTT
Help me out you all, any advice? 
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04-30-2006, 04:26 PM
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#3 |
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Registered User
Join Date: Jun 2002
Location: central pa
Posts: 1,525
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Re: HELP!!! Which type of motor mounts??
I would go with the new style as they are easier and cheaper to replace. I would stick with the rubber. Poly might last longer but you will feel more vibration through them. As far as matching engine and trans mounts never heard bad about mixing them. If you are worried about your engine mounts being ripped out from the torque. find a after market chain or strap to tie the engine down to the frame. My sons 283 in his '65 impala had factory tie downs from the exhaust to the frame with a cable.
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72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne |
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04-30-2006, 06:17 PM
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#4 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,402
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Re: HELP!!! Which type of motor mounts??
I have run the sb (replacement) rubber mounts on my 383 for the last 1/2 dozen yrs.....no issues
 Urathane will be a little stiffer/harsher, but will be my choice when it come s time.... L
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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04-30-2006, 06:19 PM
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#5 |
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Registered User
Join Date: Jun 2004
Location: Saskatchewan, Canada
Posts: 1,368
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Re: HELP!!! Which type of motor mounts??
Here is the old style poly made by Prothane, I also run a matching tranny mount. My motor makes 620 plus in torque alone without the N20, they are brand new so we'll see how they hold up.
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Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs Last edited by 71Dragtruck; 04-30-2006 at 06:20 PM. |
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04-30-2006, 11:12 PM
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#6 |
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All Praise RANDY!!
Join Date: Sep 2004
Location: Central California
Posts: 391
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Re: HELP!!! Which type of motor mounts??
WOW! Nice lookin setup there!
 I have the motor balanced, but I still dont want too much vibrations running through the frame and what not... are the 73 and newer ones a direct bolt in? or is there much to change or adapt? Thanks again all!!!! |
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05-01-2006, 12:37 AM
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#7 |
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Senior Member
Join Date: Nov 2005
Location: northwestern wi
Posts: 2,111
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Re: HELP!!! Which type of motor mounts??
cornutz i run the same prothane mounts as 71 dragtruck in my vette i didn't notice a differance in vibs i used there tranny mount as well. hey coud i get the details on your high torque 350 i wanna build one to run tempararly in my 71 4x4 then slip in my 67 after i get the caddy 500 and thd 400 readt for the 4x4
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