little help? confused on my engine mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ta2edjr · 11-03-2015, 01:17 PM

Putting a 5.3 in my 72 and I don't think I'm using the right frame mouts. I pulled these mounts from a mid 80s model truck but they arnt like what everyone else is using and I can't seam to find any pics of these online. They use a clam style mount but they are different and I cannot for the life of me get the engine to bolt up in the truck also if it worth the info the truck I pulled these from had a 4.3 in it the first pic is of the mounts. Second pic is of the driver side bolted on third pic shows how far the mount is off. Any and all help is appreciated

Aruba1 · 11-03-2015, 03:26 PM

I used something like this.... http://www.ebay.com/itm/LS-LSX-Engin...lRP1tt&vxp=mtr

but I used the 3 bolt mount that is for a 72 chevy truck... I believe you can also get the clamshell tipe mounting plate on ebay and you can also get some adjustable brackets that has 3 different mounting positions and then there are the "slide" brackets. I went with the non-adjustable because I wanted the new engine to site in the same place as the SBC did.

Do a search on "LSX swap adapter or plate" on ebay or on this forum, there are TONS of information on them.

http://www.ebay.com/itm/LS-LSX-Engin...lRP1tt&vxp=mtr

Ta2edjr · 11-03-2015, 05:20 PM

I have what you sent me. It's bolted to the block in the pics and hard to see. what I'm having problems with is the frame mounts. I've read that using 73-87 frame mounts will give you more clearance but the ones I picked up arnt what everyone else is using and they came from a 80s model truck. I'm going tomorrow to get the correct frame mount.

NotMyMojo · 11-03-2015, 08:09 PM

It appears that you've already realized this, but you don't have the correct frame mounts from the 73-87 trucks. What you need are the V8 frame mounts with the clam shell style engine mounts such as these:

http://www.ebay.com/itm/Engine-Motor...BWJS8J&vxp=mtr

I picked mine up from a Pull-A-Part yard for about $25. I will be pairing them up with 73-87 Dirty Dingo sliders for the 5.3 that's going in my 67.

Ta2edjr · 11-05-2015, 05:06 PM

I ended up getting the correct frame mount today! So one step closer now!

11-03-2015, 01:17 PM	#1
Ta2edjr Registered User Join Date: Mar 2015 Location: Portsmouth Posts: 123	little help? confused on my engine mounts Putting a 5.3 in my 72 and I don't think I'm using the right frame mouts. I pulled these mounts from a mid 80s model truck but they arnt like what everyone else is using and I can't seam to find any pics of these online. They use a clam style mount but they are different and I cannot for the life of me get the engine to bolt up in the truck also if it worth the info the truck I pulled these from had a 4.3 in it the first pic is of the mounts. Second pic is of the driver side bolted on third pic shows how far the mount is off. Any and all help is appreciated Attached Images

11-03-2015, 03:26 PM	#2
Aruba1 Registered User Join Date: Apr 2014 Location: Birmingham, AL Posts: 560	Re: little help? confused on my engine mounts I used something like this.... http://www.ebay.com/itm/LS-LSX-Engin...lRP1tt&vxp=mtr but I used the 3 bolt mount that is for a 72 chevy truck... I believe you can also get the clamshell tipe mounting plate on ebay and you can also get some adjustable brackets that has 3 different mounting positions and then there are the "slide" brackets. I went with the non-adjustable because I wanted the new engine to site in the same place as the SBC did. Do a search on "LSX swap adapter or plate" on ebay or on this forum, there are TONS of information on them. http://www.ebay.com/itm/LS-LSX-Engin...lRP1tt&vxp=mtr Last edited by Aruba1; 11-03-2015 at 03:27 PM. Reason: add link

11-03-2015, 05:20 PM	#3
Ta2edjr Registered User Join Date: Mar 2015 Location: Portsmouth Posts: 123	Re: little help? confused on my engine mounts I have what you sent me. It's bolted to the block in the pics and hard to see. what I'm having problems with is the frame mounts. I've read that using 73-87 frame mounts will give you more clearance but the ones I picked up arnt what everyone else is using and they came from a 80s model truck. I'm going tomorrow to get the correct frame mount.

11-03-2015, 08:09 PM	#4
NotMyMojo Registered User Join Date: Aug 2014 Location: Gainesville, GA Posts: 51	Re: little help? confused on my engine mounts It appears that you've already realized this, but you don't have the correct frame mounts from the 73-87 trucks. What you need are the V8 frame mounts with the clam shell style engine mounts such as these: http://www.ebay.com/itm/Engine-Motor...BWJS8J&vxp=mtr I picked mine up from a Pull-A-Part yard for about $25. I will be pairing them up with 73-87 Dirty Dingo sliders for the 5.3 that's going in my 67.

11-05-2015, 05:06 PM	#5
Ta2edjr Registered User Join Date: Mar 2015 Location: Portsmouth Posts: 123	Re: little help? confused on my engine mounts I ended up getting the correct frame mount today! So one step closer now!



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