350/330 Crate engine
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Speaking of exhaust, does anyone have a used Merc or Aquapower riser they want to get rid of cheap? I want to do some testing, and can't bring myself to drill holes in a brand new riser. I don't care if it's corroded, or beat up, as long as it's not cracked or leaking.
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I have been comparing the Stainless Marine to the GLM and the insides look very similar on the small black application. I have only looked at pictures so far. The picture of the small block manifold cut out is in the latest Hot Boat and it is a picture on page 114 on the right of the display is the small block manifold. Looks very similar to the GLM. Dwight
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If noise regulations are a significant issue, then run thru the outdrive. If there is more than 10hp to be gained on a 330+/- hp smallblock with center risers by going thru the transom, I'd be surprised.