273 Engine intake upgrade turned sour

Get the E-4 cam and lifters. Racer Brown can also grind a nice cam for a 273. Might want to get a set of 340 valve springs or equivalent to get the most out of the E-4 cam. Everything else should be fine. Use a good double roller timing chain. I might have a Racer Brown solid cam and lifters close to the Commando cam in my stash.