440 HEADS - HELP

[phade]

I need your HELP! I have a 73 440 RB, probably out of a motor home or truck. I am planning on replacing the heads. My CURRENT heads casting number reads "3769907". I looked it up on an online chart and the closest I found was 3769902. Will my current rockers on this head fit any 440 heads? If not, what heads will they fit on? Thanks guyz

[firefighter3931]

All BB rocker arms/shafts are interchangable. Look around for a set of 452 castings....those will have the hardened exhaust valve seats for use with unleaded fuel. Welcome to the site, btw.



Ron

[phade]

right on, thanks. Which are the better performance-906,516 or 346? these are what i am finding available right now.

[Chryco Psycho]

all big block castings flow preety close , personally I like the 516 with larger vales as it has the true closed chamber & will make quench , after that any casting is pretty much equal , 906s have slightly better intake port & 452s have hardened exhuast seats which works only if you stay with stock valve size which I never do on the exhaust side the benefit is lost

[Challenger340]

I vote 452 castings, just my 2 cents.

Bob out.