Mines got a 318. All stock bottom end. Block, rods, crank, oil pan. Its the original engine (bottom part). 360 heads from a junk yard car. Lapped the valves & bolted em on. MP oil pump & mild cam. Stock converter. Trannys seen some attention cause it died & I had my tranny guy build it right. I only turn it to 4500 cause of its 40 year old internals. Runs 8.90 to 9.00 in the 1/8 th. One of these days I'll drop a 440 or something in it. To darn busy working on other cars to mess with it. Besides it runs good & wins rounds.