289 water passages

[40 Bud]

I have been told that there are water passages in the heads of a 289 that do not have openings onto the earlier (1965-66) blocks. My understanding is that there is a template for locating the right position to drill these openings into the block and improve cooling. Anyone familiar with this procedure?

 

[40 Bud]

Still looking for some confirmation of the cooling passage issue on the 289.

 

[Mike Huddart]

Bud,
seems if you need to know about an American engine on here you need to ask an Englishman !

You don't need a template, lay a head gasket on the block, you are dealing with both front cylinders, # 1 and # 5. At the top ( pushrod side )of the cylinder ( and all other cylinders ) there are two small round openings in the gasket at about one o'clock and eleven o'clock. For # 1 cylinder drill an 1/8 th hole into the block through the one o'clock hole ( the one nearest to the front )_ for # 5 cylinder, again, drill through the one o'clock hole, in this case the second from the front.

Easy Peasy. !

Mike

 

[40 Bud]

Thanks Mike.