how to make a 306?!
 

Ok now correct me if i am wrong here...

a 5.0 mustang is a 302, however it isn't a 289 bored to a 302 it is stroked (correct?) .. because i know an old 302 i had was a bored 289. And if i have a 289 bored to a 302 and put a 302 crank (from a late model 5.0 ) then it would be a 306 correct?

302 bored .030 over = 306.

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90 GT 150k on the motor never had the valve covers off, 1 5/8" headers, x-pipe, 2chamber flowmaster,fms aluminum ds, 3.55, best time on 245/45/17 2.08 60', 13.906 @ 98.98

Enigine math my friend:

bore x bore x stroke x number of cylinders x 0.7854 = cubic inches

So...4.00 x 4.00 x 3.00 x 8 x 0.7854 = 302 (it's actually 301.5936...but it's rounded)

Thus...4.030 x 4.030 x 3.00 8 x 0.7854 = 306

Does that make sense?

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s