Motor Mount modifications for 340/360 into Early A
65s said: "I've seen a few early A's with 340's that did not have the passenger side mount modified, but then only two bolts hook up, which I guess is okay but with 10 minutes of modification time you can have all three...isn't that better"
Neil you are 100% correct in stating that the passenger side mount from a pre-67 will bolt to a 340/360 using 2 of the block mounting ears, and that works just fine. Also, as you stated, 10 minutes of modification to the mount by adding a triangle of metal will allow you to use all 3 mounting lugs on the block.
As far as the driver's side 273 mount in an EARLY (66 or older) A body fitting a 360 type block, they DO FIT. The only difference is that there is a space of about 1/4" between the rear mounting lug of the block and the rear of the 273 mount. You can either weld in a piece of metal and re-drill the hole, or use washers to fill the space.
Here's a photo of my original 273 engine mount from my 66 A body, attached to the 1978 motor - 360 cu. in. I can get a photo of the other side later today if anyone wants to have a lookie see.
65s said: "I've seen a few early A's with 340's that did not have the passenger side mount modified, but then only two bolts hook up, which I guess is okay but with 10 minutes of modification time you can have all three...isn't that better"
Neil you are 100% correct in stating that the passenger side mount from a pre-67 will bolt to a 340/360 using 2 of the block mounting ears, and that works just fine. Also, as you stated, 10 minutes of modification to the mount by adding a triangle of metal will allow you to use all 3 mounting lugs on the block.
As far as the driver's side 273 mount in an EARLY (66 or older) A body fitting a 360 type block, they DO FIT. The only difference is that there is a space of about 1/4" between the rear mounting lug of the block and the rear of the 273 mount. You can either weld in a piece of metal and re-drill the hole, or use washers to fill the space.
Here's a photo of my original 273 engine mount from my 66 A body, attached to the 1978 motor - 360 cu. in. I can get a photo of the other side later today if anyone wants to have a lookie see.