Yo,

Im addicted and obsessed with my vette. i have a C7 Stingray Z51 making 750hp with 600 to the crank. My build is P-1sc-1 procharger, an LT4 high pressure fuel pump with dsx induction and dsx flex fuel. Awe exhaust, a borla x pipe, and a custom dyno.

Im targeting the mid ARH headers as my next performance purchase based on my budget. I want to add at least 50-75 more HP, and make my exhaust note more menacing. i dont have the cash for a longtube setup, and it makes sense to buy new headers before doing any porting.

So my question is how many hours labor to do this instal, do I need to change any of the pulleys on my procharger or modify it at all based on the header install? With a good tune what is reasonable for the hp increase? And just for a comparison Im out in the slicon valley, in California, whats a fair dyno price for a job like this. Does $3650 cover the heads ($1700) after tax, the labor to install, the tune, and any additional parts I might need. Yes i know i can ask my shop, of course I already have, but Im curious about the feedback and wisdom of the corvette community

much respect

Scott

ZR1 bumper, vicrez side skirt wing, vicrez rear diffuser, tps spoiler, forgestar rims, toyo R88R proxies

 

Making 750HP but 600 to the crank? Did you mean 600 to the wheels? 600 to the wheels won't equal 750 to the crank so a bit confused here.

Aside from that, ARH Mids sound great with the Borla X pipe if it is the cat delete version of the Borla X pipe. As for adding power, you're not going to find 50-75 HP unless you're timing limited on the factory manifolds. However, assuming you have stock LT1 pistons, you're timing limited already by the stock pistons. 600 wheel is about where the limit is for the stock LT1 pistons. Some have pushed it further by running meth and/or Ethanol blends to keep things cooler.

You would probably pick up 15-20 wheel HP by switching to the ARH mids. Make sure you have the fuel for what you're wanting to do. Stock LT1 injectors are going to be tapped out already.

 

As Internet Ninja states , you are going to need a lot more work before you try to add any more power adders , if that's your number

Dave