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baja27

11-17-2009 08:09 PM

Heads for blower

Which heads would you guys recomend for a 509 with 5-7 pounds of boost, turning max rpm of 5600.
Thanks

Griff

11-18-2009 01:38 AM

Heads need to match the cam for the best performance. It really just depends on what you want and how much you want to spend.

PatriYacht

11-18-2009 05:54 AM

Afr 315 Cnc

baja27

11-18-2009 07:59 AM

Cams are 525efi

Smitty

11-18-2009 08:43 AM

Many choices out there, just make sure they are aluminum.

Best talk to Bob Madera of Marine Kinetics. He can spec heads and a cam that will make more power than you think.

Call Bob at 585-654-8583

Tell him Smitty sent you.

C5Steve

11-18-2009 04:26 PM

Dart 380's

Griff

11-19-2009 02:11 AM

Quote:

Originally Posted by C5Steve (Post 2992529)

Dart 380's

WAY TOO BIG.

The AFR's 315's would probably be a good choice.

michigan troll

11-19-2009 11:24 AM

I have the same set up. Bored 502efi, procharged at 7#, using the 525 cam and dart Pro1 320 mild port.
The combo dynoed 814+ @ 5500
That was with all the pumps belts and marine exhaust.

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