Big Block Motor Mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MAC71 · 03-09-2015, 12:30 AM

Where do I get Big Block Motor mounts for a 1969 C20 with a 396. Parts stores only have the small block ones and I have been looking on line and can not find the ones for a big block.

MAC71 · 03-09-2015, 01:47 AM

Did some more looking at the small block mounts and now understand what the difference is. The small block only have the rubber linking the engine to the frame where the big block has the bolt go to the plate that bolts to the block. Much stronger but can not find new ones. May have to make the small block ones work.

**68bowtie** · 03-09-2015, 02:04 AM

http://www.earlyclassic.com/

look for 68-71 motor mounts. part #700697.

mechanicalman · 03-09-2015, 02:11 AM

Quote:

Originally Posted by MAC71

Did some more looking at the small block mounts and now understand what the difference is. The small block only have the rubber linking the engine to the frame where the big block has the bolt go to the plate that bolts to the block. Much stronger but can not find new ones. May have to make the small block ones work.

OK you likely have already seen this?
https://www.rockauto.com/catalog/x,c...69%2BCHEVROLET
https://www.rockauto.com/catalog/mor...836&cc=1031667

Now I don't know if that's an accurate picture/depiction, but it looks different from my small block mounts in my 72. It is application-specific, however I know that does not mean they are what you are looking for.

MAC71 · 03-09-2015, 02:14 AM

Quote:

Originally Posted by 68bowtie

http://www.earlyclassic.com/

look for 68-71 motor mounts. part #700697.

Found them, thank you. $79 each. Wow

hilandr452 · 03-09-2015, 02:16 AM

I would try a pull and pay type boneyard. They will go cheap and be as good as anything you'll find new.

MAC71 · 03-09-2015, 02:16 AM

Quote:

Originally Posted by mechanicalman

OK you likely have already seen this?
https://www.rockauto.com/catalog/x,c...69%2BCHEVROLET
https://www.rockauto.com/catalog/mor...836&cc=1031667

Now I don't know if that's an accurate picture/depiction, but it looks different from my small block mounts in my 72. It is application-specific, however I know that does not mean they are what you are looking for.

This is what the auto parts store has, but this is incorrect

MAC71 · 03-09-2015, 02:19 AM

It's the rubber I need not the stands.

MAC71 · 03-09-2015, 02:24 AM

Quote:

Originally Posted by MAC71

Found them, thank you. $79 each. Wow

68 bow tie found the rubber mounts but at $79 per side I can not do that. I have a set of small block mounts $2.69 a side. Any one use small block mounts. Looks like the driver side will have to be trimmed and I will have to use big washers. Not sure if it will cause the engine to sit to low. The photo is all that is left of my mounts

**68bowtie** · 03-09-2015, 02:25 AM

yep they are pricey. you can supposedly make small block rubber mounts work (cheaper) with some oversized washers. there's a thread on here about it somewhere, but i can't vouch for it personally.

hilandr452 · 03-09-2015, 04:13 AM

If you have the mounts and just need what bolts to your engine, I used the later model mounts for an 83 gmc. Added large washer with rubber from a shock mount on the back side I had laying around. I'll get some pictures tomorrow for ya.

hugger6933 · 03-09-2015, 07:13 AM

The guy from Texas [whose screen name escapes me at the moment] made his small block mounts work by using big washers. Look in the FAQ section of the home page of this site. Oh yeah, I think TX firefighter is his name.. I remember he does real good work. jim

**Ironangel** · 03-09-2015, 11:03 AM

I'm all eyes and ears for big block motor mounts and stands...I'm dropping a 69 396ci into a 72 C-10 that has the 350/350tb in it now. I really hate to drop $200 in mounts and stands if small block stands can be made to work? Links? Pics? Thanks, ~Ghostrider~

46stude · 03-09-2015, 02:44 PM

Google "POL tubular engine mount brackets 1968-72", if you're not concerned w originality. That's what I plan to use in my 454\TH400 swap in my 350/TH350 equipped '72 Cheyenne.

**lolife99** · 03-09-2015, 03:20 PM

Tx Firefighter link:
http://67-72chevytrucks.com/vboard/s...d.php?t=122645

cla511 · 03-09-2015, 03:44 PM

I have these with the urethane in my 72 and really like them. For a high torque BBC they hold up well.

https://www.performanceonline.com/19...-Brackets-V-8/

MAC71 · 03-09-2015, 04:31 PM

Quote:

Originally Posted by lolife99

Tx Firefighter link:
http://67-72chevytrucks.com/vboard/s...d.php?t=122645

This helps. The drivers side small block rubber mount hits the block on the corner but I can cut a 1/4 in off and it will work

**Ironangel** · 03-09-2015, 06:43 PM

Awesome! Thanks for the links you guys...

hilandr452 · 03-09-2015, 10:31 PM

I ran these mounts with the 454 for about 10000 miles while the engine had a horrible vibration caused by installing the wrong flex plate. They were very solid considering I tried to shake the motor out of my truck....

Mount from Autozone for 1980's BB

Stock BB Mount in my 71

Bolt with rear shock mount washer from a rodeo, very rugged

03-09-2015, 12:30 AM	#1
MAC71 Registered User Join Date: Dec 2011 Location: UTAH Posts: 353	Big Block Motor Mounts Where do I get Big Block Motor mounts for a 1969 C20 with a 396. Parts stores only have the small block ones and I have been looking on line and can not find the ones for a big block. __________________ Mike 1971 C10 350 1969 C20 396 1979 Corvette L-82

03-09-2015, 01:47 AM	#2
MAC71 Registered User Join Date: Dec 2011 Location: UTAH Posts: 353	Re: Big Block Motor Mounts Did some more looking at the small block mounts and now understand what the difference is. The small block only have the rubber linking the engine to the frame where the big block has the bolt go to the plate that bolts to the block. Much stronger but can not find new ones. May have to make the small block ones work. __________________ Mike 1971 C10 350 1969 C20 396 1979 Corvette L-82

03-09-2015, 02:04 AM	#3
68bowtie Senior Member Join Date: Jan 2007 Location: Turlock, CA Posts: 8,553	Re: Big Block Motor Mounts http://www.earlyclassic.com/ look for 68-71 motor mounts. part #700697. __________________ Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Survivor "Lil’ Mint" (67 c10 40k mile light green original paint) Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD

03-09-2015, 02:16 AM	#6
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: Big Block Motor Mounts I would try a pull and pay type boneyard. They will go cheap and be as good as anything you'll find new. __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442

03-09-2015, 02:19 AM	#8
MAC71 Registered User Join Date: Dec 2011 Location: UTAH Posts: 353	Re: Big Block Motor Mounts It's the rubber I need not the stands. __________________ Mike 1971 C10 350 1969 C20 396 1979 Corvette L-82

03-09-2015, 02:25 AM	#10
68bowtie Senior Member Join Date: Jan 2007 Location: Turlock, CA Posts: 8,553	Re: Big Block Motor Mounts yep they are pricey. you can supposedly make small block rubber mounts work (cheaper) with some oversized washers. there's a thread on here about it somewhere, but i can't vouch for it personally. __________________ Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Survivor "Lil’ Mint" (67 c10 40k mile light green original paint) Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD

03-09-2015, 04:13 AM	#11
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: Big Block Motor Mounts If you have the mounts and just need what bolts to your engine, I used the later model mounts for an 83 gmc. Added large washer with rubber from a shock mount on the back side I had laying around. I'll get some pictures tomorrow for ya. __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442

03-09-2015, 07:13 AM	#12
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,261	Re: Big Block Motor Mounts The guy from Texas [whose screen name escapes me at the moment] made his small block mounts work by using big washers. Look in the FAQ section of the home page of this site. Oh yeah, I think TX firefighter is his name.. I remember he does real good work. jim

03-09-2015, 11:03 AM	#13
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Big Block Motor Mounts I'm all eyes and ears for big block motor mounts and stands...I'm dropping a 69 396ci into a 72 C-10 that has the 350/350tb in it now. I really hate to drop $200 in mounts and stands if small block stands can be made to work? Links? Pics? Thanks, ~Ghostrider~ __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

03-09-2015, 02:44 PM	#14
46stude Registered User Join Date: Dec 2014 Location: Rockport, Texas Posts: 192	Re: Big Block Motor Mounts Google "POL tubular engine mount brackets 1968-72", if you're not concerned w originality. That's what I plan to use in my 454\TH400 swap in my 350/TH350 equipped '72 Cheyenne.

03-09-2015, 03:20 PM	#15
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,690	Re: Big Block Motor Mounts Tx Firefighter link: http://67-72chevytrucks.com/vboard/s...d.php?t=122645 __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

03-09-2015, 03:44 PM	#16
cla511 Registered User Join Date: Aug 2014 Location: Alabama Posts: 50	Re: Big Block Motor Mounts I have these with the urethane in my 72 and really like them. For a high torque BBC they hold up well. https://www.performanceonline.com/19...-Brackets-V-8/ __________________ 1972 C10 Cheyenne 402/TH350 1985 GMC 1500 Sierra Classic 350/700R 1986 K20 427/NV4500 1986 K20 Sub 406/TH400 "Life's tough.....It's enough tougher if your stupid." John Wayne

03-09-2015, 06:43 PM	#18
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Big Block Motor Mounts Awesome! Thanks for the links you guys... __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

03-09-2015, 10:31 PM	#19
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: Big Block Motor Mounts I ran these mounts with the 454 for about 10000 miles while the engine had a horrible vibration caused by installing the wrong flex plate. They were very solid considering I tried to shake the motor out of my truck.... Mount from Autozone for 1980's BB Stock BB Mount in my 71 Bolt with rear shock mount washer from a rodeo, very rugged __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442



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