049 BB heads
11-04-2013, 07:03 AM
#1
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049 BB heads
Does anyone know the complete casting number for the BB chevy 049 heads . Want to look up some info on them CC, valve size ect. Thanks JOHN SR
11-04-2013, 04:32 PM
#4
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The 049 is very similar to the 781 casing. Its been proven many times on the dyno that the 049 or 781 with 2.19/1.88 valves installed will out perform stock GM rectangle port heads on a NA 454 up to about 5500 rpm
Last edited by dandercam1; 11-05-2013 at 02:09 AM.
11-05-2013, 10:17 AM
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Be forewarned though- By the time you buy some old castings and rebuild them with good (not Great) parts for a marine engine you're going to be very close to what you will have into a new set of aluminum heads. The aluminum heads will blow them away in every area. I almost went down this path 5 years ago until I did the math. Add some porting and you will have more in them than new aluminum heads. IMO they are not a good value even if you are on a budget.
Now if you could grab a set for $600 all rebuilt that is a different story.
Now if you could grab a set for $600 all rebuilt that is a different story.
Last edited by endeavour32; 11-05-2013 at 10:20 AM.
