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Discussion Starter #1
Can anyone tell me if all the intake and exhaust ports are the same between a chev 250 straight 6 and a 292? I have located a 292 to put in my boat and need to know if the water cooled manifold off the 250 would fit.
 

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years ago I had one of those engines and put it in a 63 chevy II,from what I can remember the difference was in the longer crankshaft for the 292.I used an aftermarket 4bbl intake for a 250 I got at a swapmeet,so I would say the manifolds are the same
 

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Clifford (http://www.cliffordperformance.com/), the 6-cylinder specialists, sell the exact same manifolds for 248 (250), 292, and 302 engines.
 

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The 292 will bolt right in. The exhaust will fit from your old engine, along with all of your original accessories. Mercruiser used 292s at one time and even used q-jet carbs on them,if I remember right they all used the same intake. They used an aluminum adapter to put 2bbls on the 250s. :)
 

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Discussion Starter #6
thanks for the help, the motor is in albiet a little taller than the last one. only major problem was that i had to punch out the mounting holes on the 250 flywheel to fit the 292. find out how she runs tommorrow, rain or shine, probably rain.
 
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