curious?
Le Mans Master
Joined: Oct 2010
Posts: 7,373
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From: cold & windy
depends on what type of supercharger you use, and how good your tuner is. meth does help stave off detonation by lowering IATs and increasing octane, but it ain't required at that level.
mod-for-mod, a centri can get you a higher horsepower number at the same safety level as a PD unit because it flows better above 5000 RPM, has a progressive power onset, makes less torque overall... whereas a twin screw or roots blower will essentially make boost proportional to your throttle position at any RPM.
mod-for-mod, a centri can get you a higher horsepower number at the same safety level as a PD unit because it flows better above 5000 RPM, has a progressive power onset, makes less torque overall... whereas a twin screw or roots blower will essentially make boost proportional to your throttle position at any RPM.
Last edited by _zebra; Oct 27, 2018 at 04:15 PM.
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
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2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
preventing detonation is all about the fuel being used and the tune... decide what power level you want to be at and build accordingly
Last edited by StingrayRebel; Oct 27, 2018 at 05:57 PM.
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
lots of folks "push" stock combos and get away with it based on driving habits. I'll just say tune for ZERO detonation and if you get greedy consider e85 so hopefully save the hyper pistons which are prone to cracking much above 600
cyl pressure can bent rods if you get greedy with too much boost at to low an rpm. a nice turbo setup will be easier on the stock crank and rods.
cyl pressure can bent rods if you get greedy with too much boost at to low an rpm. a nice turbo setup will be easier on the stock crank and rods.
