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#1 |
Registered User
Join Date: Dec 2008
Location: Jackson, MS
Posts: 373
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Engine Mount Question, to change or not to change
Where I come from they are called motor mounts. Anyway, my engine is almost finished at the machine shop. I have read through Roj2323 mount swap. Here for ref:
http://67-72chevytrucks.com/vboard/s...d.php?t=128765 The block I am using is an 86 model. Should I do this conversion or just use the standard setup that was on my 307, new of course? The engine is not much more than stock, small cam, headers, 4bbl, etc. Thanks for any enlightenment you may have on the subject.
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1968 Chevy C/10 LWB V8 ![]() 1983 K5 Blazer 1989 C1500 Stepside Reg. Cab V8 |
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#2 |
Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: Engine Mount Question, to change or not to change
Why would you considering using the 73-87 mounts? Is there something you like about them? I say stick with what you have or go to a tubular aftermarket set. They will bolt right in.
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb ![]() |
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Engine Mount Question, to change or not to change
the originals lasted 40 years
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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 |
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#4 |
Registered User
Join Date: May 2011
Location: mich
Posts: 655
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Re: Engine Mount Question, to change or not to change
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#5 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,151
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Re: Engine Mount Question, to change or not to change
I would swap. There is definitely a reason that GM went to interlocking mounts. On my '64 Impala I broke a mount which put the fan into the shroud which bent both. If I hadn't had a steel shroud, it would have gone through the hood or at least dented it. If I hadn't been at a low speed it probably would have gotten the radiator too.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#6 | |
Still Learning
Join Date: Jul 2009
Location: Central Oklahoma
Posts: 10,108
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Re: Engine Mount Question, to change or not to change
Quote:
40 year technology isn't always the best. ![]() |
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#7 |
Account Suspended
Join Date: Dec 2011
Location: ma
Posts: 278
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Re: Engine Mount Question, to change or not to change
isn't the 73 up interlocking type..
a failed motor mount can hang the throttle open.. if a lead foot, thats reason enough |
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#8 |
Registered User
Join Date: Dec 2008
Location: Jackson, MS
Posts: 373
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Re: Engine Mount Question, to change or not to change
Thanks for the input fellas!
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1968 Chevy C/10 LWB V8 ![]() 1983 K5 Blazer 1989 C1500 Stepside Reg. Cab V8 |
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#9 |
Still Learning
Join Date: Jul 2009
Location: Central Oklahoma
Posts: 10,108
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Re: Engine Mount Question, to change or not to change
Bert,
I used the 73 up style with clamshells for my build. The main reason, I have had a few of the oem style fail in my big block truck. You can add chains or cables to keep if from over traveling in the event of an over torque situation. I prefer these style mounts. Just my 2 cents. I had to drill a few hole to use them. But I am also using an LS engine in my build. |
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#10 |
Registered User
![]() Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Engine Mount Question, to change or not to change
The originals really are'nt that good but I myself can't bring myself to switch. I still insist on running the drivers side alt. too. I'm kinda weird that way. I wouln't even go to HEI until about 1995.
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#11 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,151
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Re: Engine Mount Question, to change or not to change
I'm not sure I would go out of my way to change them on a driving vehicle, but if I already had the engine out it would be a good time.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#12 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Engine Mount Question, to change or not to change
If you wanna use OEM type, then you might want to scrounge up one of the restraints that GM installed as a result of the recall notice when the motor mounts started coming apart. Here's a pic of the loop that mounts to the chassis. Then, you need to fabricate a duplicate of the cable that went through the loop and around the exhaust manifold. If you run OEM manifolds and have OEM motor mounts, the cable and loop will lend an air or authenticity that all is as GM intended for it to be.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. Last edited by ChevLoRay; 12-22-2011 at 03:43 PM. |
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#13 |
Registered User
![]() Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Engine Mount Question, to change or not to change
I have only seen one truck with those cables still on it. What years were recalled? Wonder if they'de still honor that recall? lol.
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#14 |
Who's got steelies?
![]() Join Date: Feb 2006
Location: Morrison, Oklahoma
Posts: 1,026
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Re: Engine Mount Question, to change or not to change
Get the poly mounts from Summit. They have an internal locking feature if they do break.
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#15 |
Registered User
![]() Join Date: Sep 2009
Location: Prescott Valley AZ
Posts: 345
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Re: Engine Mount Question, to change or not to change
Great idea.
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