Let me know how to "infuse a converation with facts" that sounds like a malapropism and I like hearing them.
"Fuelie" doesnt mean anything, its slang. different people ***ign what they want it to mean. Use the casting #, theres a reason its there. chevrolet never used the term from any info Ive seen? Just like every 327's a vette engine and every 4 bolts a "hi po", 3/4 cam, full race cam, and then theres the "Police Interceptor" stuff, just ******** terms people make up, It can all mean something different depending on whos saying it. Use the #'s. For your 265, use the heads that are in the best condition, A 265 isnt gonna be a "monster" anyway - see, more slang. it will be a period correct good running small block.
I think this is really funny too, but for likely a different reason. You know it is really hard to believe the Chevy small block deserves such "**** talk". I guess all of the aftermarket companies, coincidentally, made the same mistake for 40+ years while other "better" engines were over looked.
I beg to differ...I know a guy who had a full house flat head back in the late 50's, who go his *** blown off the track by a girl with her mother's 55 4door,2bbl 265. Since then, all off his hot hods have had a small block Chevy...funny, it still hurts him, but he honestly admits this even though he is still a die hard Ford guy!
All I know is... Thank you Chevrolet for the 327 and the camel hump heads... Ya just can't go wrong with that combo..
I've played and raced these engines for years. The 991's were on the 220hp 57 Corvette , also the 991's were used on the 245 D4BC ,250 FI, and 270 D4BC engines. 539's were on 220 hp p***enger car engines aswell as the 283 hp engine , but, the 283 hp engine had a light weight swirl finish valve. In 1961 the 461 heads came out on the 315 hp FI 283 and then were used again in 62 on the the new 327 engine of the year. I have found the 520 casting 283 heads work well as they have a small combustion chamber. 520s were also machined for 194 valves and used on the 250hp 327 engines. Casting numbers are just that "casting numbers" sometimes the same casting was machined different for different applications. As a side note, "IF", you have a early head that has the casting (double hump or ???) on the front of the head partly milled off (milled thin). It's from an early Vette as they used a mount that was between the water pump and the block causing them to hit the head on the drivers side. http://members.kos.net/willisb/
This is a pretty fair representation but not all casting numbers are noted. Side note: 991's in my experience at the dealership were 1.72 intakes and 1.50 exhausts. http://www.fastnuf.com/Headguide.html
Check out this casting #'s chart!!! Not sure how acurate it is... http://webpages.charter.net/darrell1/casting_numbers.html