vipershark11

To start off I have a 350 in my Firebird and am wondering whether new heads or a cam will net me more hp. The motor is a non roller 350 with 9.5:1 compression. I put 190cc Procomp heads on it a while back along with a Comp XE268 cam. Its specs are at .05 224 230,advertised 268 280, lobe sep 114, and lift is .509 .512 with my 1.6 roller rockers. It has a Holley stealth ram on it for an intake being fed by a D1SC pushing 14psi. The exhaust is a 1.75 primary shortys into a 2.5" collector into a dual 2.5" y to a single 3". This is all through a 700r4 with a 3200 rpm custom 9" stall. Now last year it dynoed 370 whp and 490rwtq through 1 5/8 headers and a dual 2.25" y pipe So now Ive been looking at either Pro-Filer heads or a bigger cam with more duration and lift. BTW the tq peaked at 3200rpm then just dropped to 350 at 5200 rpms Im looking for a flatter curve that pulls nicely to 6k rpms.