Draining manifolds & block '92 5.7L Bravo?

[purl]

I have a 1992 5.7L Bravo and I'm trying to winterize. I fogged the engine and now I'm trying to drain the block and manifolds. I can't seem to locate drain plugs. Both manifolds have heater type hoses coming to the bottom side. Should I pull these to drain or is there a plug or petcock? As for the block I can't seem to locate any drain plugs. My last boat was a 4.3L V6 and it had petcocks for both manifolds and each side of the block. Then I would pull and drain the lower water pump hoses and all would be good. My service manual is vague as to draining the engine.
Any help or pics would be greatly appreciated.

 

[Bondo]

Re: Draining manifolds & block '92 5.7L Bravo?

I have a 1992 5.7L Bravo and I'm trying to winterize. I fogged the engine and now I'm trying to drain the block and manifolds. I can't seem to locate drain plugs. Both manifolds have heater type hoses coming to the bottom side. Should I pull these to drain or is there a plug or petcock? As for the block I can't seem to locate any drain plugs. My last boat was a 4.3L V6 and it had petcocks for both manifolds and each side of the block. Then I would pull and drain the lower water pump hoses and all would be good. My service manual is vague as to draining the engine.
Any help or pics would be greatly appreciated.

Ayuh,... If there's no drains in the manifolds, Yes, pull the hoses off the bottom...

Yer 350 block has the same drains in the same locations as yer 4.3l did...