Re: 236 vs 049
I don't know alot about the peanut port heads, but i built a .030" over 396 20 + years ago, when I just put a bunch of mish mash together that i bought from a guy. I had the small domed forged TRW pistons and the 781 heads, which are very similar to 049. It had to have very low compression. I added a 294s Comp solid lifter cam, lifter, springs kit and a Edelbrock Performer RPM intake with a 750 Edelbrock. I ended up replacing it with an 800 cfm Double Pumper Holley. I had a 4 spd and a 3.90 12 bolt posi in my 69 Camaro. Since it was my first big block i ever built, I goofed on the pistons as I didn't realize a big block engine with a open chamber head would be so low of compression. That is why i bought the 294 duration cam, as I figured it would be at least 10 to 1 compression. LOL. At any rate, the STOCK 781 heads 119cc, and small domed piston which probably gave me a 8.5 to 1 compression, didn't miss a beat. It ran really good. I was amazed. It would rev 6500 rpm all day long and obliterate the tires! So there are potential in just stock 049's. I had a pair of 049's and ran those last with 2.19/1.88 valves on a solid roller 468 and ran amazing. But if you could get the stock 049's for just a song, i would get them. run them for awhile, and then maybe later put some larger valves in them, as the flow potential in them are amazing for a GM casting. you will definitely pick up midrange and top end.
69 Camaro SS Clone fully restored
496, Straub cam, 700R4, 3200 stall, Fitech Meanstreet EFI with Ahhhh... A/C,
3.42 12 bolt posi rear end