post badest stock stroke small blocks

a true 340. the old MPperformance 318-3 truck crank- stock polished rods w/pin oiling mod - ross 12-1 lightened pistons 510 grams- hughes solid cam - chapman w2 econo heads -victor w2 intake w/ hvh 2" spacer and a pro systems 870 carb. heddman 1-7/8 husler headers through 3-1/2 kooks exhaust with xpipe and borla muffs at rear axle. 4spd and 489 gears motor was together for 7 years and i drove on the street all the time. i started racing the 10.00 class and at the 3rd race it spun a bearing and that was that. this combo was a few years ago. i sold the w2 top end and still have the short block .