hmm i've never heard of 4.30's taken u outa the poweband.. everyone i've seemed to talk to never had any problems at the track with them. i have 4.30's an i can tell u from expirence that 4.56's would be kinda steep for a daily street car. track may be a diff story. just my 2 cents
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347- ported X heads, Xcam , RPM air-gap intake, 650 holley DP, 10:5 comp., equal lenght shorties, pullies, MSD ignition, pro 5.0 shifter. stock fuel system !!
best ET: 11.95 @113 1.64 60 foots
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