I am building a 454 and am looking to make 450 to 500 hp. My question is what head casting numbers will be able to produce this with out a lot of work. I am looking at making this a driver not a racer but still want the power. I was told 791 and 049 were good any others. I am not that familiar with big blocks. Any info will be helpful.
781's and 049's are very good but only for open chamber pistons. 063's and 206's are good closed chamber heads. It depends what type of engine you build. There are other good heads but it's too early to think straight.
Garnet Red 69/SS396/TH400/355 Posi Sold
'02 triple blk Vette Vert. now
94 HD Dyna Wideglide
Let me give some more info the block is bored .030 the cam I am going to run is a comp cam 280 duration .520 lift hydraulic lifter or a 280 grind roller cam and lifters. I have not bought pistons yet and want to run on pump gas.
270 dur .510 lift -copy of ls-5 hyd. cam from isky.
How would this cam work in a 468 with stock 80's 'truck' heads and a 670cfm carb? Machine shop is putting pistons in to give me about 9.5:1 compression. I'm concerned with power from idle to 5000rpm, don't really care what it does past that.
All the info is great I am building a 72 z28/rs it is on my rotisserie. I have a 700r4 that will back to the engine and a 3:73 posi. I am putting it all together for the hot rod power tour this june. I build 67-69 camaros everyday but really like the 2nd gen. and it seems like there popularity is starting to catch. Any other advice for the 454 build up is greatly appreciated.