318 & 360 block variations

[Retroboy]

Howdy. I seem to think I've read 318 and 360 have different mountings. Are the lugs cast onto the side of the block different? I have a solid mounted 360 using the front lugs on each side of the block but when we welded it all up I used a 318 block.
Cheers
Tony

 

[omahamoparguy]

I think the 318 lugs are spread wider apart on the block and the 340/360 lugs are narrower. this difference may be compensated for with some washers or a carefully crafted spacer. [at least thats what I remember when going from a 318 to a 360]

 

[moper]

Yes - 273/318 mounts as cast into the block (the "ears") are different from 340/360. You need to space it or re-weld mocking up on a 360.

 

[dukeboy440]

Yes - 273/318 mounts as cast into the block (the "ears") are different from 340/360. You need to space it or re-weld mocking up on a 360.

This^

 

[Marcohotrod]

I think the different width is only on the right side

 

[crackedback]

If you are ONLY using the two front lugs, you should be OK. They are in the same place on both blocks.