C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Motor Mounts

Thread Tools
 
Search this Thread
 
Old Mar 9, 2016 | 02:04 PM
  #1  
JLmiller's Avatar
JLmiller
Thread Starter
Advanced
 
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
Default Motor Mounts

Thanks for all the great advice, I have another question.

I just rebuild my 1970 convertible 350 to a 383. Should I upgrade my motor mounts?
Reply
Old Mar 9, 2016 | 02:31 PM
  #2  
resdoggie's Avatar
resdoggie
Had a 1976 L-82, 4-sp
Supporting Lifetime
10 Year Member
Veteran: Navy
 
Joined: Mar 2011
Posts: 5,338
Likes: 1,213
From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
Default

If they are at all suspect, yes.
Reply
Old Mar 9, 2016 | 03:02 PM
  #3  
OzzyTom's Avatar
OzzyTom
Burning Brakes
20 Year Member
Liked
 
Joined: Dec 2003
Posts: 1,004
Likes: 7
From: Adelaide South Australia
Default

I would put solid mounts in, especially if you have a manual trans.
It is the left mount that shears.
If putting in non solid mounts, certainly put the ones with the interlock to prevent excess engine torque lift when it breaks.
Reply
Old Mar 9, 2016 | 06:17 PM
  #4  
toobroketoretire's Avatar
toobroketoretire
Melting Slicks
 
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
Default

I have always used standard motor mounts but with a 3/8" bolt thru the middle of them with a self locking nut to hold the two halves together. That gives the dampening effect of a standard motor mount but prevents the engine from ever lifting up under hard acceleration. Or you can use "locking" motor mounts that have a mechanical stop built into them.
Reply
Old Mar 9, 2016 | 07:24 PM
  #5  
larrywalk's Avatar
larrywalk
Melting Slicks
20 Year Member
Veteran: Marine Corps
Liked
Loved
 
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
Default

I had a left-side solid motor mount develop a 3/4 crack with about 6 months of usage. I'll never go that way again and am sticking to the newer rubber mounts with the safety interlocking feature.
Reply
Old Mar 9, 2016 | 07:40 PM
  #6  
fishslayer143's Avatar
fishslayer143
Drifting
 
Joined: Aug 2009
Posts: 1,346
Likes: 160
From: new iberia la
Default

Use the heavy duty interlocking type mount.. unless you have a boatload of torque,and very sticky tires, you won t break them .
Reply

Get notified of new replies

To Motor Mounts





All times are GMT -4. The time now is 06:12 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE