dparker

If you plan on running 8000 rpms, don't skemp on the block. The block, crank, and rods are what decide how long your engine will last. Especially at 8000rpm. Get a Dart block and go to the next step.

hammertime

Which GM 502 is it, a Bowtie ?

Like Parker mentioned a motor that spins that high will need very good parts to stay alive. Titanium valves would also be on that list.

tcarda

I bought the Dart 355 CNC heads from Reher Morrison along with their CNC Edelbrock Super Victor with 1" spacer and reversion plate. They are good heads, but they don't flow much over 400 cfm. I don't think you will achieve the power your looking for with the 355s without doing a lot of work to them and you can get Edelbrock Victor heads from RFD that will be CNC'd for you motor and application that will suit you better if you are staying with a conventional style head. I know "obsessedtruck's" motor and his Big Dukes are awesome from RFD. Are you planning on putting titanium valves on the intake side?

ultimatewarrior1

WELL IT COMES TO BIG CHIEF HEADS OR VICTOR HEADS. FIXING TO PUT A FRESH VAVLE JOB ON MY AFR 335 SO I CAN SELL THEM. TRYING TO GET THE NEW HEADS FIRST BEFORE ORDRING THE BOTTOMEND SO EVERTHING MATCHES UP.I APPRECIATE EVERYBODYS INPUT ON THIS SUBJECT .

hammertime

Will be more cost going the 18 degree setup for sure, if it were me I'd order Brodix bb3x's for it.

obsessedtruck

I just finished chassis dynoieng my truck today. I ened up with 740 at the wheel. With my drive line that comes to 1070hp at the crank out of my little 522. Peak hp @ 7200rpm. Thats with RFDs 1803 Oval port Brodix big dukes. Im not done yet either theres more in it yet.

hammertime

http://www.racingjunk.com/post/13881...p-profile.html

something like this setup would be perfect.

ultimatewarrior1

THAT LOOKS LIKE A GOOD DEAL BUT WHY GO WITH OVAL PORTS?THIS DEAL WOULD HELP THEY ARE 200 MILES AWAY.

hammertime

Oval ports are the way to go now you'd make the power you wanted with them heads for sure, and can put good valve in them.

badbug3

just how good are the new brodix oval port -3 extra heads compared to the conventional rect port heads of the same port volumn. Anyone have any experience with them?