SlvrMN6

I need suggestions for heads given my setup. I'd like to stay around $1,500 or less. I'm looking for power under the curve. I already have spings/pushrods. Whats the next step up from LS6 heads? Patriot, PRC? Should I just get the LS6 heads? Also, my friend doing the install has LS7 lifters, is there any benefit of using these in my car?

Mods:
Texas Speed 228R 114LSA Camshaft
PRC Platinum Double Springs
Hardened 7.40” Chromoly Pushrods
LS6 Intake Manifold
BBK 80MM Throttle Body
ProFlow+ Cold Air Induction
Breathless Performance Increase MAF Sensor
HighFlow 172 Thermostat/Housing
Throttle Body Water Bypass
TPIS Long Tube Headers
Pro Flow X-Pipe & High Flow Catalytic Converters
B&B Tri Flow Sport Mufflers
Racetronix Boost-A-Pump
LS2 Oil Pump
Timinig Chain
Catch can
3.90 Rear Hardened Axle Seals/Gears
Z06 Clutch
Throw Out Bearing
Clutch Master Cylinder
Hurst Short Throw Shifter

zeevette

About the best bargain in quality heads are the "as-cast" 220cc Trickflow heads. I think Vengence has them, and they're around your budget, IIRC.

SlvrMN6

I'll look into those. Is there a benefit to installing ls7 lifters?

9secondflat

buy the tfs 215 listed on the parts for sale section...

SlvrMN6

To late, they're sold.

I think I'm going either PRC ls6 stg.2 or PRC 5.3 stg.2.

Which would be better?

MG RED 99

You might want to try also posting in the LS1 forum. Lots of good knowledge there too. Do you know what your HP & TQ numbers are now at your current setup.

SlvrMN6

My car is getting a few upgrade since the last dyno. With the stock 98 manifold/heads/cam she put down 341 whp and 350 wtq. She's undergoing surgery at the moment. Ls6 manifold, 228r cam, ls7 lifters, a few other goodies. Still figuring out heads.

whiteboy572ci

PRC Stg 2.5 LS6, Texas-speed have done there homework on those. I am planning on using these in the near future. The ls7 lifters are just a new lifter, not sure if there is any advantage. I have 98,xxx on my c5z and still have the stock lifters. Might want to get them milled or use a thinner head gasket to bump that compression up also. My $0.02

SlvrMN6

Going with the prc 2.5 ls6s. I'll report results in about a week. Man I'm excited!

whiteboy572ci

Awesome! I have a 224/228 xer on 114 with lg streets now and would like to see what you make so it gives me a ball park on the gains. Im guessing what i have now makes bw 410-425rwhp, would be happy with anything over 440rwhp and around or over 400rwtq with these heads. I am also planning on decking them to get 11.0:1cr. Good luck and report back!