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A centri is like a turbo, but spools off of the belt. It increases HP and TQ with RPMs. Twin screws and roots are both positive displacement, but a twin screw creates boost in the housing and feeds it into the combustion chambers while a roots force feeds air into the combustion chambers. Twin screws and roots both tend to make almost all of their usable HP and torque at lower RPMs and remain high across the band with roots tending to drop off at the very highest RPMs. Twin screws and centrifugals tend to run cooler than roots. (That's the not-so-Mr-Wizard summary.)
Last edited by Diabolical!; 01-13-2011 at 10:52 PM.
Aint that the truth! The only way for a V8, even the 5.0 Coyote, to trump that is to go blown too!
Well, if 475 is crank, to be honest I think you could top that on the coyote without going blown. Say you have a tune and CAI, people are posting 380rwhp or so, and assuming that's about 17% loss, you'd be at about 458 at the crank. If you threw on some LT headers and a new exhaust setup I think you'd be over 475 crank easily. And IMO CAI, tune, and exhaust isn't even that extensive an N/A setup. You could of course also throw in cams too to boost those numbers even further.
Nevertheless though, that's some crazy *** HP on a sixxer. I'm impressed! Although I do wonder how well those blocks will hold up under 475hp over time just as I wonder about blown coyotes.
Well, if 475 is crank, to be honest I think you could top that on the coyote without going blown. Say you have a tune and CAI, people are posting 380rwhp or so, and assuming that's about 17% loss, you'd be at about 458 at the crank. If you threw on some LT headers and a new exhaust setup I think you'd be over 475 crank easily. And IMO CAI, tune, and exhaust isn't even that extensive an N/A setup. You could of course also throw in cams too to boost those numbers even further.
Nevertheless though, that's some crazy *** HP on a sixxer. I'm impressed! Although I do wonder how well those blocks will hold up under 475hp over time just as I wonder about blown coyotes.
I'm not saying you couldn't beat an N/A V8 with a blown V6 even if the V8 has upgrades, I was just countering his point that technically you could get above 475 crank HP on a coyote without going blown.