408 aluminum head choice for 500Hp

mopardude318 said
Eddy's out of the box are not that great. can't expect to them to be all good and just bolt them on...thats where they get there shitty rep...its the additional things people gotta pay to have them gone through is what they dont like....I'd go with the eddy heads myself, maybe order them bare, and have Brian @ IMM engines (located in Cali), or Shady Dell, build them up real nice for you.

here's a the links to there shop, you can order the heads from whoever you choose...they both know their mopars!

http://www.shadydellspeedshop.com/edelbrockheads.htm

http://www.immengines.com/

I wouldn't let Ryan at Shadydell from port Matilda touch my Briggs&stratten flat head without valves. They fly cut my pistons through my Batten heads with a stem cutter . They Charged me for a CnC flycut. They don't even have one there. I gave them my old bridge-port Mill It was wore out but it was better then their Harbor Frieght Drill press. I made them buy me a every piece. They stood behind their mistake. But only because I had pictures and reciepts for everything they did. Lucky me. The only thing I saved from my motor was the timing cover and the valve covers. even the intake and the oil pan was shot. Rocker arm shafts looked like Bananas. Mine was the second that week. A sprint car motor was destroyed that same week. This was the best. They dynoed my motor only 593 and fell of at 7200 . They broke both ears off of the block trying to hit the pins front. They broke one and then instead of looking into why it broke. They broke the other. Then they realized you can't hit them front like a SBC because they are stepped. This happened at Ryder Race engines. Where I made them dyno my motor after the second build because of metal and other issue's I found.

Information? Maybe
Hands on? not a chance
Buying Parts ? Only if dropped shipped

Go with Indy 360-1's . They had to buy me same or better heads that they destroyed and the only better LA heads with up to date parts available are Indy's. My motor sees 8000 all the time and had my recall show 9300 to members on this site after a rolling John Force style Tire melt at a local show. They didn't touch anything on my new motor. Dave at HTA. Home of the Hemi hunter did my current motor. and all motors since.

Go Indy for power and reliability at the RPM's you want to turn.