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865 Casting BBC heads

3K views 2 replies 2 participants last post by  68Chevele 
#1 ·
I got a call yesterday and it was one of the guys I race with asking if I wanted a set of BBC heads. Turns out they were really nice but the valves look really small. They are 856 castings and I think they are off a 366 as the heads have 1.94 intake and 1.66 exhaust valves. The guy said he went to Brodix Race-Rites and his car is now a killer, well I can see why. These heads look to be the same as the 256hp 396 and 360hp 454 heads but with tiny valves, but have a super short side to rework on the exhaust side. Looks like a nice set of 2.06 and 1.72 valves are in order here. Anyone have any flow numbers on these early semi-open chamber heads?
 
#2 ·
Details for 330865


Manufacturer Chevrolet
Category Cylinder Heads
Type Big Block V8
Date 1968-1984
Notes oval port, open chamber, 396, 402, 366 tall deck, 427 tall deck, 454 Truck
Added to DB 2010-12-25 18:03:33 (3427 days ago)
 
#3 ·
Thanks. It looks like these heads had either a 1.94 and 1.66 valves or 2.06 and 1.72 either way I think some larger valves are in order since the guides are slightly loose.
 
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