Quote: With the edelbrocks, the short turn is not only THE most critical part (usually true with most heads) but if you did almost nothing to it I can assure you it is stalling at .500 lift or before. There's no need to sleeve the pushrod holes, but you have to be crafty about slowing the air down right there. I can get it to 305fps but I have to flow each and every intake port to do it. Measuring is not accurate enough. That's when I charge!! But it works awesome and these heads will make power for alot less money than other heads. There is a TON of work on these heads, about 20 hours of porting, seat work and chamber work. I don't really pour heads anymore, it seems to me that it's really useless because the castings will only allow so much but I would say they are not small! I have to sonic test the ports in some spots when I start cutting to make sure the port will allow my shape. I'll say this...I spot check the intake ports at 36" from .500 to .700 to see how it works and at .600 it's fairly stable but after that it gets a little turbulent!!
So your telling me all thework ive done on these heads are worth nothing?
No....I'm giving an overview of what I've seen after doing like 15 sets of these heads. And on the street stuff we actually speed up the air if the lifts are low and it's a 340/360. I'll speed the air up so it's so fast it won't take much more than .550 lift but roll-on power is instant! My porting is application specific, like any good porter's. I don't subscribe to the cnc "port the head to it's max" jobs because of this. Nothing against good cnc work, but every time I get a cnc'd head I can gain flow and sometimes alot without much work. There's a guy out here that will digitize ports for me and create programs with really good Haas machine's for cheap as long as I supply him with monthly work, but I just don't want to give up the hands on application specific work that I like to do. Call me old fashoned I guess...
