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#1
11-16-2004, 01:05 AM
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what grade gas to use??
Im running a 3.4 inch pulley and tr66 plugs do i have to use the 93-94 octane the price is killin me
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1998 silver gtp, GM performance Handling kit ,cold air intake, KYB struts ,HD supercharger coupler ,Gatorback belts ,U bend delete ,NGK TR6 plugs ,DHP PCM, Electric exhaust cutout - SOLD 98 White GTP, N* TB, 3.0 MPS pulley, SLP headers, 1.9 Rockers, 105# springs, ZZP PCM, Flowmasters, GM performance Handling kit, FWI, GMPP springs, U bend delete, SSIC, Ported LIM, Autolite plugs, ported SC, 12" brake upgrade with slotted cross-drilled rotors, 
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#2
11-16-2004, 01:38 AM
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Price you pay for performance
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#3
11-16-2004, 01:43 AM
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Re: what grade gas to use??
Quote:
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#4
11-16-2004, 06:45 AM
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Re: what grade gas to use??
You need the highest octane you can get on the supercharged 3.8. 93 or 94 is good. If you use 87 or 89 you will experience severe detonation on hard acceleration and end up with a destroyed engine. Anytime you compress air in the combustion chamber you need the higher octane to decrease the possibility of pre-ignition (detonation) otherwise the noise you hear may be parts breaking.
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