Motor mount to stand bolts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mindhive · 07-02-2004, 08:45 PM

I got my truck disassembled and can't find the original bolts that go through the engine stand into the mount. I read here somewhere they are 7/16-14 so I bought a couple, but when I put it in it got really tight. I figured it was supposed to be tight to lock the bolt in but I ended up ripping out the nut from the rubber in my brand new mount. 3/8 bolts are swimming in the hole in my other new mount but I can't even get the 7/8 bolt started. Any help would be appreciated.

Tim

JimKshortstep4x4 · 07-02-2004, 09:22 PM

The nuts in the mounts should be for the 7/16-14 bolts as you tried. I would try running a tap through the nuts.

Jim

Tx Firefighter · 07-02-2004, 09:48 PM

Quote:

Originally Posted by JimKshortstep4x4

The nuts in the mounts should be for the 7/16-14 bolts as you tried. I would try running a tap through the nuts.

Jim

Yep, modern parts store motor mounts aren't exactly the epitome of quality. They usually have some rubber goobers down in the threaded hole. The tap should clear it out.

7/16 bolt and put some groovin music on the radio. It usually takes a few minutes to get everything lined up.

crazy longhorn · 07-02-2004, 10:57 PM

Yup, along with the groovin jams, I will add a few beers.....& some real special cuss words(pick your own favorites!)

crazyL

bucket · 07-02-2004, 11:08 PM

I ran into the same problem........the mounts required metric bolts.

FRENCHBLUE72 · 07-02-2004, 11:13 PM

I ran into the same problem as bucket did .. I bought 2 motor mount's from auto zone and one was made in the usa and the other korea guess which one would not accept a sae bolt...

mindhive · 07-03-2004, 02:05 AM

Ya, I was wondering if they could be metric. But I thought to myself "who would make metric threads in a part for a 1970 chevy". I ended digging up another new one that came with the truck from LMC. Guess what, same deal as the others. So, I drilled them out and tapped them for the correct bolt. It was a real PITA to tap that thing it must be made of some space age steel or something. All is well now the motor is bolted in and I can move on to something else. BTW The first two were from checker\schucks\kragen the third was from LMC and all had "Made In India" stickers on them. Thanks for all your help, its been fun.

Tim

**Yukon Jack** · 07-03-2004, 09:00 AM

Metric, now I wouldn't have thought of that.

07-02-2004, 08:45 PM	#1
mindhive Registered User Join Date: Jul 2003 Location: Mountain Home ID Posts: 85	Motor mount to stand bolts I got my truck disassembled and can't find the original bolts that go through the engine stand into the mount. I read here somewhere they are 7/16-14 so I bought a couple, but when I put it in it got really tight. I figured it was supposed to be tight to lock the bolt in but I ended up ripping out the nut from the rubber in my brand new mount. 3/8 bolts are swimming in the hole in my other new mount but I can't even get the 7/8 bolt started. Any help would be appreciated. Tim

07-02-2004, 10:57 PM	#4
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Yup, along with the groovin jams, I will add a few beers.....& some real special cuss words(pick your own favorites!) crazyL __________________ 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....

07-03-2004, 09:00 AM	#8
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Metric, now I wouldn't have thought of that. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

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07-02-2004, 09:22 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The nuts in the mounts should be for the 7/16-14 bolts as you tried. I would try running a tap through the nuts. Jim

07-02-2004, 11:08 PM	#5
bucket Registered User Join Date: Aug 2001 Location: Shawnee, KS Posts: 923	I ran into the same problem........the mounts required metric bolts.

07-02-2004, 11:13 PM	#6
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	I ran into the same problem as bucket did .. I bought 2 motor mount's from auto zone and one was made in the usa and the other korea guess which one would not accept a sae bolt...

07-03-2004, 02:05 AM	#7
mindhive Registered User Join Date: Jul 2003 Location: Mountain Home ID Posts: 85	Ya, I was wondering if they could be metric. But I thought to myself "who would make metric threads in a part for a 1970 chevy". I ended digging up another new one that came with the truck from LMC. Guess what, same deal as the others. So, I drilled them out and tapped them for the correct bolt. It was a real PITA to tap that thing it must be made of some space age steel or something. All is well now the motor is bolted in and I can move on to something else. BTW The first two were from checker\schucks\kragen the third was from LMC and all had "Made In India" stickers on them. Thanks for all your help, its been fun. Tim



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