The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-10-2008, 03:05 AM   #1
harrdawg54
Registered User
 
harrdawg54's Avatar
 
Join Date: Apr 2007
Location: Sandpoint, Idaho
Posts: 178
? about motor mounts

I am going to replace my existing 350 with a new 350 and need to replace the motor mounts. My question is do i get the early style "short and wide" motor mount that measures 2 5/8 in. between the ears and 1 3/4 in. tall to the center of the through bolt hole, or the "tall and narrow" motor mount that measures 2 3/8 in. between the ears and 2 3/16 in. tall to the center of the through bolt hole. Is one for a car and one for a truck or ? Thanks.
harrdawg54 is offline   Reply With Quote
Old 03-10-2008, 03:37 AM   #2
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
Re: ? about motor mounts

the one with the bolt up through, is the early style. In 72 there was a recall due to those mounts breaking.
I think in 73 they went to the clamshell mounts, which bolts them together laterally.
The later ones are much better in every aspect, but I am not sure what it would take to put them in your truck... I'd imagine later model engine towers would do the trick.
Myself, if your old ones are good, I'd swap them to the new engine.
Longhorn Man is offline   Reply With Quote
Old 03-10-2008, 04:23 AM   #3
70GMCer
Senior Member
 
70GMCer's Avatar
 
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
Re: ? about motor mounts

I went with these mounts. Of course I didn't get the chrome ones, so they were cheaper. Fit great.....
http://www.performanceonline.com/sto...cat=455&page=1
__________________
1997 GMC Sierra Ext

1965 Mustang
70GMCer is offline   Reply With Quote
Old 03-10-2008, 04:30 AM   #4
skokie
Registered User
 
skokie's Avatar
 
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,339
Re: ? about motor mounts

Quote:
Originally Posted by 70GMCer View Post
I went with these mounts. Of course I didn't get the chrome ones, so they were cheaper. Fit great.....
http://www.performanceonline.com/sto...cat=455&page=1

Were they a direct bolt in or did you have to do some fabricating? What motor mounts did you use?

harrdawg54 if you go for the ones longhornman is talking about make sure that the 3/8s bolt will fit in the mount. I ran 3 parts stores out of these because the company that made them tapped the hole for metric instead of 3/8.
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018
If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started.
https://slothforpedcancer.org



68 build thread
http://67-72chevytrucks.com/vboard/s...d.php?t=223234
skokie is offline   Reply With Quote
Old 03-10-2008, 07:29 AM   #5
68C15
blood type; Retumbo
 
68C15's Avatar
 
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
Re: ? about motor mounts

will the clamshell ones fit with ram's horn manifolds? I know with the later style bottom log type manifolds you have to have the clamshell mounts.
68C15 is offline   Reply With Quote
Old 03-10-2008, 12:05 PM   #6
harrdawg54
Registered User
 
harrdawg54's Avatar
 
Join Date: Apr 2007
Location: Sandpoint, Idaho
Posts: 178
Re: ? about motor mounts

I don't have to worry about ram horns or anything like that, I have headers on the new motor. These are the mounts that I am thinking of using.
The are Energy Suspension part number ENS-3-1120G and it includes both motor mounts and also the trans mount.
__________________
1969 Chevy K20 Custom Camper
350, 4sp, 33's
High on plans, Low on funds
harrdawg54 is offline   Reply With Quote
Old 03-10-2008, 12:08 PM   #7
harrdawg54
Registered User
 
harrdawg54's Avatar
 
Join Date: Apr 2007
Location: Sandpoint, Idaho
Posts: 178
Re: ? about motor mounts

sorry the link for the pic didn't work here is what I am talking about.
Attached Images
 
__________________
1969 Chevy K20 Custom Camper
350, 4sp, 33's
High on plans, Low on funds
harrdawg54 is offline   Reply With Quote
Old 03-10-2008, 04:25 PM   #8
70GMCer
Senior Member
 
70GMCer's Avatar
 
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
Re: ? about motor mounts

Quote:
Originally Posted by skokie View Post
Were they a direct bolt in or did you have to do some fabricating? What motor mounts did you use?

harrdawg54 if you go for the ones longhornman is talking about make sure that the 3/8s bolt will fit in the mount. I ran 3 parts stores out of these because the company that made them tapped the hole for metric instead of 3/8.
Yes, they were a direct bolt on. No mods and they came with the standard OEM rubber mounts and hardware. You also get more clearance around the frame with these. IMO, money well spent, (but not for the chrome ones).
__________________
1997 GMC Sierra Ext

1965 Mustang
70GMCer is offline   Reply With Quote
Old 03-10-2008, 08:16 PM   #9
tnblazerk5
User #12137
 
tnblazerk5's Avatar
 
Join Date: Apr 2004
Location: kingsport,upper east tenn
Posts: 11,598
Re: ? about motor mounts

if your useing stock towers on the frame you will need to use these
http://store.summitracing.com/egnsea...115+4294861902
tnblazerk5 is offline   Reply With Quote
Old 03-10-2008, 08:30 PM   #10
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
Re: ? about motor mounts

Hmmm- I went down to NAPA and asked for mounts for the 71.
Did I do something I'm going to regret?
s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.
Sport/Truck is offline   Reply With Quote
Old 03-10-2008, 08:35 PM   #11
tnblazerk5
User #12137
 
tnblazerk5's Avatar
 
Join Date: Apr 2004
Location: kingsport,upper east tenn
Posts: 11,598
Re: ? about motor mounts

Quote:
Originally Posted by Sport/Truck View Post
Hmmm- I went down to NAPA and asked for mounts for the 71.
Did I do something I'm going to regret?
s/t
no i wouldnt think so , i did the same bout a year ago on both trucks i owned at the time a 67 and a 70 , i no longer own the 70, and they (napa mounts) are holding up well on the 67 and i beat the crap outa the truck , hard lanching and banging gears
tnblazerk5 is offline   Reply With Quote
Old 03-13-2008, 04:04 AM   #12
JayDubBlazer
go cyclones
 
JayDubBlazer's Avatar
 
Join Date: Jun 2003
Location: Ames, IA
Posts: 1,885
Re: ? about motor mounts

Quote:
Originally Posted by tnblazerk5 View Post
if your useing stock towers on the frame you will need to use these
http://store.summitracing.com/egnsea...115+4294861902
I just started a thread on this, 80 bucks?, that's pretty steep. Isn't there a mid priced set? Somewhere in the 30 buck range that would rust?
__________________
Wes



PROJECT OLE GREEN

1972 Blazer 4X4 350/700R4
2017 Silverado LT

Last edited by JayDubBlazer; 03-13-2008 at 04:05 AM. Reason: missed puctuation
JayDubBlazer is offline   Reply With Quote
Old 03-13-2008, 06:57 AM   #13
prg machine
Registered User
 
prg machine's Avatar
 
Join Date: Jun 2007
Location: oregon
Posts: 1,069
Re: ? about motor mounts

Quote:
Originally Posted by tnblazerk5 View Post
no i wouldnt think so , i did the same bout a year ago on both trucks i owned at the time a 67 and a 70 , i no longer own the 70, and they (napa mounts) are holding up well on the 67 and i beat the crap outa the truck , hard lanching and banging gears
Napa here also!!! Stock mounts for the 69 K truck
__________________
69 K-20 cloned to a 67 with front clip and some other stuff.
383 .040 over
Crane roller cam lifters and rockers ,1.6 intake ratio, Open chamber heads, 9.5-1 compression ratio, 2.02 intake valves , Edelbrock performer Air Gap manifold Carter AFB performer 750cfm, MSD ignition, SM465 NP205 4.10 gears:
prg machine is offline   Reply With Quote
Old 04-26-2008, 06:57 PM   #14
Chris4x4Gill2
Registered User
 
Join Date: Apr 2006
Location: Alabama
Posts: 794
Re: ? about motor mounts

I'm almost ready to drop my motor back in as well and I need new Motor and tranny mounts. I am seeing a huge difference in prices, from the $90 summit sets above to about $30 I think for stock replacement from LMC or some others. Are the summit ones worth the extra cash? whats the difference? is it just rubber vs polyurethane bushings?
Chris4x4Gill2 is offline   Reply With Quote
Old 04-27-2008, 09:19 PM   #15
tnblazerk5
User #12137
 
tnblazerk5's Avatar
 
Join Date: Apr 2004
Location: kingsport,upper east tenn
Posts: 11,598
Re: ? about motor mounts

Quote:
Originally Posted by Chris4x4Gill2 View Post
I'm almost ready to drop my motor back in as well and I need new Motor and tranny mounts. I am seeing a huge difference in prices, from the $90 summit sets above to about $30 I think for stock replacement from LMC or some others. Are the summit ones worth the extra cash? whats the difference? is it just rubber vs polyurethane bushings?
cant help ya , i have never ran anything with the poly mounts
i just go to napa and get reg motor mounts and trans mounts.
but i do have a set of poly mounts for the 71 monty but its a long long ways away from getting a motor
tnblazerk5 is offline   Reply With Quote
Old 04-27-2008, 09:35 PM   #16
cdowns
Senior Member
 
cdowns's Avatar
 
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
Re: ? about motor mounts

poly mounts transfer a huge amt of vibration to the frame and body they're not all that great for a daily driver i had them once and chucked them in the garbage in less than 3months cause i couldnt see in my mirrors cause the truck was vibratin so bad a waste of money for me
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane

MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF

DONT BELIEVE EVERYTHING YOU THINK

TAKE MY ADVISE;I DON'T USE IT ANYWAY
cdowns is offline   Reply With Quote
Old 04-27-2008, 09:56 PM   #17
Billla
Account Suspended
 
Billla's Avatar
 
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
Re: ? about motor mounts

Quote:
Originally Posted by cdowns View Post
poly mounts transfer a huge amt of vibration to the frame and body they're not all that great for a daily driver i had them once and chucked them in the garbage in less than 3months cause i couldnt see in my mirrors cause the truck was vibratin so bad a waste of money for me
Poly mounts are a middle ground between stock rubber mounts and solid mounts. They're a performance add-on for hot trucks...not a good choice for street driving.
Billla is offline   Reply With Quote
Old 04-27-2008, 10:03 PM   #18
67_C-30
I have a radical idea!
 
67_C-30's Avatar
 
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
Re: ? about motor mounts

I agree X 2 on the poly mounts. Great for a strip/street vehicle or a truck doing heavy towing, but new stock mounts are fine for a driver.
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435
‘72 C-10 SWB , 350 4bbl, TH350
'69 C-10 SWB , 250 L6, 3 OTT
'69 GMC C3500, dump truck, 351 V6, NP435
'84 M1009 CUCV Military Blazer

67 C-30 Turbodiesel build thread
http://67-72chevytrucks.com/vboard/s...d.php?t=254096

My trucks
http://s226.photobucket.com/albums/d...ediafilter=all

Member of the 1-Ton Club!
67_C-30 is offline   Reply With Quote
Old 04-27-2008, 11:38 PM   #19
El Jay
Gone to greener pastures
 
Join Date: May 2007
Location: Gateway to the Delta
Posts: 7,354
Re: ? about motor mounts

Quote:
Originally Posted by Sport/Truck View Post
Hmmm- I went down to NAPA and asked for mounts for the 71.
Did I do something I'm going to regret?
s/t
I've also used CarQuest.
Just told 'em, "'69 1/2 T, 350."
Installed without any problems.
__________________
'69 Chevy 1/2 T LWB Stepper: Daily Beater
'72 GMC 3/4 T Fleet: Another Daily Beater
'72 Plymouth Gran Coupe: ?


"Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche

"Never kick a fresh turd on a hot day." Harry S. Truman

GUN CONTROL: Never having to say, "I missed you."

Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck
El Jay is offline   Reply With Quote
Old 04-28-2008, 11:01 PM   #20
64 GMC Mike
Registered User
 
Join Date: Apr 2008
Location: St Francis MN
Posts: 13
Re: ? about motor mounts

Hi i am new here,I have a 69 chevy frame that is 2 wheel drive, and had a 6 cyl. engine with 4 speed. I am putting in a 350 v-8 with a tubo 400 auto. I have my engine and tranny in, not sure if i am using wright mounts. The right side is bolted in ,the left side is off. ? also dose anyone know if i am in the wright holes?


64 GMC Mike is offline   Reply With Quote
Old 04-29-2008, 01:34 AM   #21
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
Re: ? about motor mounts

You might want to look at starting another thread instead of threadjacking an old one... you'll get more ppl looking, and more answers.
Persnoally i have never had an issue with these old style mounts, but it seems a lot of people have, there was actually a thread about getting them to line up a couple days ago. I would say loosen it all up, and tsab it, then tighten it all down.
As for location, yes, that looks correct if i'm not mistaken.
Longhorn Man is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:00 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com