Your use of the word BEST takes the 350 completely out of the picture---If you want to change your request for a GOOD or FAIR choice then we can offer some help. The 350 and other gen 1 sbc are very old tech and have been surpassed in every basic thru advanced levels of every function of the engine---------


Step up to something that doesn't use the camshaft to drive the ignition and oil pump------has cylinder heads that aren't compromised by adjacient exhaust valves, has shaft rocker system the intake port isn't squeezed by pushrod locatonn, etc, etc