Donor engine opinion wanted

[PlumLoco]

I know a guy who parked a 1986 Winnebago back in the day with 28K miles in so Cal.
What are the pros/cons of using it as a base for a jet boat build? I'm looking for a big, flat torque curve around 550-580 ft/lbs.
Would this likely still be a decent block, rods and crank to start with? Assuming I would stay with iron heads, what would be a good choice there?

 

[obnoxious001]

I know a guy who parked a 1986 Winnebago back in the day with 28K miles in so Cal.
What are the pros/cons of using it as a base for a jet boat build? I'm looking for a big, flat torque curve around 550-580 ft/lbs.
Would this likely still be a decent block, rods and crank to start with? Assuming I would stay with iron heads, what would be a good choice there?

The block should be fine, crank likely cast rather than forged and the heads are probably going to be peanut port. Large oval port heads such as 049 or 781 work really well for jet boats. Usually I would consider it only for the block, but you could elect to use the crank and rods if you were trying to work with a budget.

 

[Teague_JR]

The block should be fine, crank likely cast rather than forged and the heads are probably going to be peanut port. Large oval port heads such as 049 or 781 work really well for jet boats. Usually I would consider it only for the block, but you could elect to use the crank and rods if you were trying to work with a budget.

agreed. cheap head and cam swap should net you that 550 torque, just be prepared that the crank and rods are only good for that at most and 5200 RPM.. but that might be all you need in the jet