Help! Engine mount/location question. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Joemomma1 · 06-20-2009, 10:04 PM

I was droping the cab on the new frame but the firewall was hitting the distributor. The engine mounts are from a 65 283 v8. I have a 350 or a 327, not to sure any more. When it was on the lwb gmc frame it fit perfectly using the rear 2 holes. Now this swb chevy frame wont allow it. I then tried moving it forward but only the driver side will bolt up. The passanger side mount holes are to the right of the frame holes. I know it has to do with the frame narrowing at the front. Is there anything I can do or do I have to buy after market mounts?

When I say mounts I mean the metal brakets not the rubber.

70 Suburban · 06-21-2009, 12:00 AM

sounds like the swb was a 6 cly truck.

**Captainfab** · 06-21-2009, 12:03 AM

Something sounds a little strange. The '63-'66 V8 frame brackets are meant to be on the two rear holes in the frame and the rear holes in the crossmember. If you try to move them to the forward holes they won't fit. Is your SWB frame of the '63-'66 vintage? Has the frame been modified before you got it? If you absolutely need to move the engine forward, you can use the small block mounts for the '67-'72 trucks. They are designed to mount in the froward sets of holes. I have a set if you need them. I'm not sure why some guys have trouble with an HEI and the engine in the stock location.....I've never had a problem

**Captainfab** · 06-21-2009, 12:07 AM

Quote:

Originally Posted by 70 Suburban

sounds like the swb was a 6 cly truck.

The holes in the frame and crossmember are the same regardless of the engine. The only motor mount frame brackets that are different are the ones for the 292. The ones for the V8's and the 230 and 250 I6's are all the same

Joemomma1 · 06-21-2009, 12:35 AM

the frame is 63-66. the '67-'72 trucks are different?
the frame has not been modified.

**Captainfab** · 06-21-2009, 11:26 PM

Quote:

Originally Posted by Joemomma1

the frame is 63-66. the '67-'72 trucks are different?
the frame has not been modified.

The '67-'72 trucks are pretty much the same as the '63-'66's. As far as the motor mount holes and such they are exactly the same. In the '67-'72 years the V8 (small block) mount brackets are shorter than the motor mount brackets for the '63-'66's in that they position the engine in the forward set of holes.

I would take a good hard look at what is causing your HEI and firewall interference......could be something simple. As I said before, I've never had a problem with HEI's in these trucks hitting the firewall.

Maybe if you could post a few pics of your situation.

06-20-2009, 10:04 PM	#1
Joemomma1 Registered User Join Date: Mar 2009 Location: CA Posts: 814	Help! Engine mount/location question. I was droping the cab on the new frame but the firewall was hitting the distributor. The engine mounts are from a 65 283 v8. I have a 350 or a 327, not to sure any more. When it was on the lwb gmc frame it fit perfectly using the rear 2 holes. Now this swb chevy frame wont allow it. I then tried moving it forward but only the driver side will bolt up. The passanger side mount holes are to the right of the frame holes. I know it has to do with the frame narrowing at the front. Is there anything I can do or do I have to buy after market mounts? When I say mounts I mean the metal brakets not the rubber. Last edited by Joemomma1; 06-20-2009 at 10:07 PM.

06-21-2009, 12:00 AM	#2
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Help! Engine mount/location question. sounds like the swb was a 6 cly truck. __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)

06-21-2009, 12:03 AM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Help! Engine mount/location question. Something sounds a little strange. The '63-'66 V8 frame brackets are meant to be on the two rear holes in the frame and the rear holes in the crossmember. If you try to move them to the forward holes they won't fit. Is your SWB frame of the '63-'66 vintage? Has the frame been modified before you got it? If you absolutely need to move the engine forward, you can use the small block mounts for the '67-'72 trucks. They are designed to mount in the froward sets of holes. I have a set if you need them. I'm not sure why some guys have trouble with an HEI and the engine in the stock location.....I've never had a problem __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

06-21-2009, 12:35 AM	#5
Joemomma1 Registered User Join Date: Mar 2009 Location: CA Posts: 814	Re: Help! Engine mount/location question. the frame is 63-66. the '67-'72 trucks are different? the frame has not been modified. Last edited by Joemomma1; 06-21-2009 at 12:36 AM.



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