motor mounts/frame mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

idaho66stepside · 02-09-2010, 11:36 PM

New to the group here and I have been reading lots of great info. I have a 66 longbed sideside that my Dad and I are resto moding. This is are first try at something like this and would like to start a build page. But will we have to change the frame mounts for engine when we take the 283 out for a 350? Thanks for any advice.

blackmopar · 02-09-2010, 11:47 PM

nope I dont think you do - i believe all v8 frame perches are the same (should be symmetrical) whereas the I292 perches were asymmetrical.

**Captainfab** · 02-09-2010, 11:47 PM

Welcome to the forums

No you won't need to change to a different motor mount brackets when switching from a 283 to a 350.....they are both small blocks. However I would recommend installing new replacement motor mounts when installing the 350.

idaho66stepside · 02-10-2010, 12:08 AM

Thanks for the help. I can't wait to make the farm truck nasty!

rbkanco · 02-10-2010, 01:55 AM

Thanks for joining. These guys give some good advice.

silvervic99stang · 02-10-2010, 01:20 PM

Quote:

Originally Posted by blackmopar

nope I dont think you do - i believe all v8 frame perches are the same (should be symmetrical) whereas the I292 perches were asymmetrical.

I have a 292 what motor mounts do I need to drop in a 350 into mine.

padresag · 02-10-2010, 01:33 PM

you need the passenger side frame perch for a 230,250 or a 283 for it to work properly
ron

**DPowers** · 02-10-2010, 01:39 PM

Welcome to the board.

blackmopar · 02-10-2010, 02:49 PM

Quote:

Originally Posted by silvervic99stang

I have a 292 what motor mounts do I need to drop in a 350 into mine.

yep, Padre steered u right. He helped me figure out the mess my PO did. Swapped a 350 using the 292 perches - had a sweet gangsta lean in the engine bay.

low79fx · 03-01-2010, 10:34 PM

What do you mean by lean? I had a problem getting the perches in on mine .I have a 350sbc that the PO installed,the perches were installed backwards i.e.lft.to rght.,rght.to lft. placing engine about an inch back and thus putting driveshaft tight between tranny and rear end.No slip forward clearance.I swapped them around it did give me the clearance needed at the drive shaft but it was hell lining up driver side mount to frame holes.Did I need different mounts.I am not sure exactly what mounts I actually have but they were tight fitting.Oh they are placed in the front mounting holes.

**Captainfab** · 03-02-2010, 02:38 AM

A couple pics might help. The '63-'66 V8 and some 6cyl mounts went in the rear location. The '67-'72 small block mounts were in the forward location. The 292's used one of each, passenger side forward, drivers side rear.

Quote:

Originally Posted by low79fx

What do you mean by lean? I had a problem getting the perches in on mine .I have a 350sbc that the PO installed,the perches were installed backwards i.e.lft.to rght.,rght.to lft. placing engine about an inch back and thus putting driveshaft tight between tranny and rear end.No slip forward clearance.I swapped them around it did give me the clearance needed at the drive shaft but it was hell lining up driver side mount to frame holes.Did I need different mounts.I am not sure exactly what mounts I actually have but they were tight fitting.Oh they are placed in the front mounting holes.

02-09-2010, 11:36 PM	#1
idaho66stepside Registered User Join Date: Feb 2010 Location: Twin Falls, ID Posts: 119	motor mounts/frame mounts New to the group here and I have been reading lots of great info. I have a 66 longbed sideside that my Dad and I are resto moding. This is are first try at something like this and would like to start a build page. But will we have to change the frame mounts for engine when we take the 283 out for a 350? Thanks for any advice.

02-09-2010, 11:47 PM	#2
blackmopar Registered User Join Date: Jul 2009 Location: fallbrook, ca Posts: 326	Re: motor mounts/frame mounts nope I dont think you do - i believe all v8 frame perches are the same (should be symmetrical) whereas the I292 perches were asymmetrical.

02-09-2010, 11:47 PM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: motor mounts/frame mounts Welcome to the forums No you won't need to change to a different motor mount brackets when switching from a 283 to a 350.....they are both small blocks. However I would recommend installing new replacement motor mounts when installing the 350. __________________ 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 Last edited by Captainfab; 02-09-2010 at 11:48 PM.

02-10-2010, 12:08 AM	#4
idaho66stepside Registered User Join Date: Feb 2010 Location: Twin Falls, ID Posts: 119	Re: motor mounts/frame mounts Thanks for the help. I can't wait to make the farm truck nasty!

02-10-2010, 01:55 AM	#5
rbkanco Registered User Join Date: Jul 2009 Location: Montrose, co Posts: 12	Re: motor mounts/frame mounts Thanks for joining. These guys give some good advice.

02-10-2010, 01:33 PM	#7
padresag Registered User Join Date: Feb 2008 Location: Sidney,b.c. Posts: 4,425	Re: motor mounts/frame mounts you need the passenger side frame perch for a 230,250 or a 283 for it to work properly ron

02-10-2010, 01:39 PM	#8
DPowers One foot in front of the other Join Date: Aug 2008 Location: Parrottsville, TN Posts: 5,442	Re: motor mounts/frame mounts Welcome to the board. __________________ DP's 66 Build http://67-72chevytrucks.com/vboard/s...d.php?t=361556

03-01-2010, 10:34 PM	#10
low79fx Registered User Join Date: Jun 2008 Location: odessa,tx Posts: 208	Re: motor mounts/frame mounts What do you mean by lean? I had a problem getting the perches in on mine .I have a 350sbc that the PO installed,the perches were installed backwards i.e.lft.to rght.,rght.to lft. placing engine about an inch back and thus putting driveshaft tight between tranny and rear end.No slip forward clearance.I swapped them around it did give me the clearance needed at the drive shaft but it was hell lining up driver side mount to frame holes.Did I need different mounts.I am not sure exactly what mounts I actually have but they were tight fitting.Oh they are placed in the front mounting holes.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.