47-55.1 Front Motor Mount - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dachshund · 01-07-2020, 10:25 PM

235 motor....47 3600

I have all 4 pieces ( the top cover has enlarged holes, though). The question I have is:

How do these pieces go together? Mainly, the "L" shaped bracket - how does it sit? Is there anything UNDER the crossmember (underside)? And - do all the bolts need to be carriage bolts, or can the hex head be used?

**mr48chev** · 01-08-2020, 01:43 AM

You pretty well have to use the carriage bolts.

Per these shots jacked from Ebay. Creds and thanks to Ebay seller Classychevuysa.

Top should show the exploded view. The rubber sits in the bottom piece with the flat plate on top of it.
Two of the carriage bolts in the outside holes fasten it to the frame.

the "cover" plate goes on and you drop the two other carriage bolts though the holes in the plate at the front of the motor and through the mount and the flat washers and nuts go on from the bottom.

Some times it is easier to drop the outside "hold mount to crossmember" bolts though the mount, put the cover over them and bolt the mount to the plate on the engine and set the engine in the truck with mount attached. Then you just have to put the nuts and washers on the two bolts that hold the mount to the frame and done.

Dachshund · 01-10-2020, 09:45 AM

EXCELLENT! What size are those carriage bolts? Grade 5 I presume...?
I live in Amish country, so I SHOULD be able to find some!

**mr48chev** · 01-11-2020, 01:21 AM

I'm not positive on the size. I'd have to go crawl under the 1-1/2 ton to check. The mount is still in it.

01-07-2020, 10:25 PM	#1
Dachshund Registered User Join Date: Oct 2018 Location: Trenton MO Posts: 201	Front Motor Mount 235 motor....47 3600 I have all 4 pieces ( the top cover has enlarged holes, though). The question I have is: How do these pieces go together? Mainly, the "L" shaped bracket - how does it sit? Is there anything UNDER the crossmember (underside)? And - do all the bolts need to be carriage bolts, or can the hex head be used?

01-08-2020, 01:43 AM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Front Motor Mount You pretty well have to use the carriage bolts. Per these shots jacked from Ebay. Creds and thanks to Ebay seller Classychevuysa. Top should show the exploded view. The rubber sits in the bottom piece with the flat plate on top of it. Two of the carriage bolts in the outside holes fasten it to the frame. the "cover" plate goes on and you drop the two other carriage bolts though the holes in the plate at the front of the motor and through the mount and the flat washers and nuts go on from the bottom. Some times it is easier to drop the outside "hold mount to crossmember" bolts though the mount, put the cover over them and bolt the mount to the plate on the engine and set the engine in the truck with mount attached. Then you just have to put the nuts and washers on the two bolts that hold the mount to the frame and done. Attached Images __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-10-2020, 09:45 AM	#3
Dachshund Registered User Join Date: Oct 2018 Location: Trenton MO Posts: 201	Re: Front Motor Mount EXCELLENT! What size are those carriage bolts? Grade 5 I presume...? I live in Amish country, so I SHOULD be able to find some!

01-11-2020, 01:21 AM	#4
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Front Motor Mount I'm not positive on the size. I'd have to go crawl under the 1-1/2 ton to check. The mount is still in it. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.



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