Hola Dennis Ever since 1959 the Imperial Division of The Chrysler Corperation has had only 413's or 440's as an power plant. With this usage they were all only single 4 bbl's. The 413 was from the 1959 year to the end of 1965. The 440's were used from the start of the 1966 car year to the last Imperial of 1978. As a side note, only the entry level Chrysler Windsor/ NewPort and maybe some plain un-lettered 300's had the 383 cubed engine . The peak hp on this engine was 335 . The first 413's had an higher hp and then de-tuned to 340 hp. The first 440's had 350 hp. If they had the HP 440 when they first came out it was the standard 375 hp rating. Rodger & Gabby Colo Spgs '47 De Soto Custom w/Fluid Drive & passenger door mounted swamp cooler '62 Crown Coupe w/std A/C & Auto-Pilot '66 Le Baron w/dual A/C & reverbed AM/FM '70 Overlander - InterNational Dbl '70 W100 w/318, NP 4 Spd, 3:55 & Short Box '77 D150 w/360, NP 4 Spd, 12 Bolt Axle, OEM Buckets & etc ---- 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. This email was sent to: arc.6265@xxxxxxxxxxxxxx bSONJP. Or send an email to: 1962to1965mopars-unsubscribe@