I have used later heads with the larger exhaust valve on 413 engines before. I just looked up the 361 bore, and it is slightly smaller than the 413 bore. Has anyone used later heads on a 361? Herb wrote: > we have a self proclaimed MoPar expert with a junky 66 Charger here in town that swears he did the same swap and bent the valves by hitting the block on the smaller cylinder bore. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.