LS1TECH - View Single Post - New Build. Procharger or NA? Best bang for the buck

candlelit · 10-26-2008, 10:36 PM

I'm pretty sure my brother is going to buy the Firehawk as a roller from me. So we're discussing new build options for him, because I think I'm going to sell my 8.7:1 CR 347 that's in it. We're debating whether we should do a 347 procharged, LQ4/LQ9 iron block procharged, maybe 408 procharged, or a NA motor... 402 LS2, 408 iron, 416, etc. He may drive it 5 times a week for awhile, but eventually only about twice a week it'll be driven. He's also a fan on the "big cam" sound. I know how much money he's got to spend matters on what to do, but right now I'm leaving that open. Power goals are at least 500rwhp, 475+rwtq. This will be through a 6 speed. Eventually there will be a 9" in future mods.

How much $ difference will it cost between a built 347 & built 408, with same heads/cam/etc? If only like $1000 he would rather go with the bigger motor. Also, what CR for optimal power on a 402/408/416 NA setup pump gas?

As for the difference of either NA or Procharger, NA gives you the idea that you have to change your build to increase power numbers quite a bit. So I'm afraid he'll be like everyone else and want more power after 500rwhp, especially since he will already be spending money on bigger injectors & fuel pump upgrades. Is it worth the cost difference to go with a smaller LS based motor & procharger, or should he use that extra money for better flowing heads/intake?

10-26-2008, 10:36 PM	#1
candlelit TECH Resident Trader Rating: 13 Join Date: Oct 2006 Location: Stillwater, OK Posts: 958	New Build. Procharger or NA? Best bang for the buck I'm pretty sure my brother is going to buy the Firehawk as a roller from me. So we're discussing new build options for him, because I think I'm going to sell my 8.7:1 CR 347 that's in it. We're debating whether we should do a 347 procharged, LQ4/LQ9 iron block procharged, maybe 408 procharged, or a NA motor... 402 LS2, 408 iron, 416, etc. He may drive it 5 times a week for awhile, but eventually only about twice a week it'll be driven. He's also a fan on the "big cam" sound. I know how much money he's got to spend matters on what to do, but right now I'm leaving that open. Power goals are at least 500rwhp, 475+rwtq. This will be through a 6 speed. Eventually there will be a 9" in future mods. How much $ difference will it cost between a built 347 & built 408, with same heads/cam/etc? If only like $1000 he would rather go with the bigger motor. Also, what CR for optimal power on a 402/408/416 NA setup pump gas? As for the difference of either NA or Procharger, NA gives you the idea that you have to change your build to increase power numbers quite a bit. So I'm afraid he'll be like everyone else and want more power after 500rwhp, especially since he will already be spending money on bigger injectors & fuel pump upgrades. Is it worth the cost difference to go with a smaller LS based motor & procharger, or should he use that extra money for better flowing heads/intake? __________________ 98 White TA... project. HPE Heads/Cam, Fast 90/NW 90, Moser 12 bolt, Built 4l60e, TCI 3400, B&M cooler, YT roller rockers, QA1 12 way adj, BMR & Hotchkis suspension, Racetronix fuel pump, 6 pt, Dry NOS, Drilled/Slotted rotors, Kooks 1 7/8", Borla, Raptor hood, etc.