stick to bolt on's, money spent rebuilding the 305 topend is money that be spent rebuilding a 350 top end. Headers and exhaust are #1, consider a good tuneup, maybe a perf RPM edelbrock intake, but much past that, the 305 isnt worth spending a whole lot on, unless you dead set on keeping it that is.
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Formerly Blownalcoholboy
1986 Z28, 400ci SBC, Twin borg warner billet S467 turbos, Reid case powerglide, Moser 9". Holley EFI, Boost Leash. 950RWHP on pump gas, 1200rwhp on race gas (22 psi)
Best ET 1/4: 8.35 @ 170mph (275 drag radial)
Best ET 1/8: 5.44 @ 132mph (275 drag radial)
Best 60': 1.31 on the back tires (275 drag radial)
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