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Took my car to a local shop to find a baseline before I start my H/C/I build. Current mods in sig, these numbers around where they should be with my mods?
Full kooks TD exhaust and FAST 102/102 for sure, still researching on best cam/head combo. Ultimate goal is to get as close to 500whp NA with my 346.
I see you have the Kooks system, did you get the stepped headers? Don't see many comparisons between stepped and non-stepped headers...
Mine are not stepped. I did some research and noticed the lack of comparisons as well. If you don't do stepped go with the 7/8". The true duals sound amazing. Yes they're expensive but the sound and power gain are worth it IMO. I got mine from Maryland Speed. Make sure you call, you'll get a better price. I've got a FAST 102 that's being ported by Tony Mamo and already have an NW 102 so I agree with your choices. I've got a build thread in the Camaro section. I look forward to seeing the direction yours goes.
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Stock LS1 with a few bolt ons 
