Marine L-88 Engine w/ Cast Iron Heads

[SuperNovaSS]

I picked up an engine yesterday and thought I would share. It is a complete L-88 engine that was built by GM with cast iron heads. The cast head L88 is a subject I have always been interested in. I have seen a few pop up over the years and mos message boards seem to dismiss the engines as being home built or L71/L72 engines with a 3933198 intake added.

This engine was removed from a 1969 speedboat and was the original engine to the boat. It was running 2 days ago. The suffix code is 7BL. I have seen this suffix before and always wondered what it was. The engine has the correct 3933198 intake, 840 heads, heavy duty AC fuel pump, 7/16 dimple rods, and the 7115 steel crank.