J. Grady probably knows for sure, but I think the 62 405hp short ram engine probably used a similar or same cam as the optional 60-61 400hp factory engines and it was considerably more radical than the standard version. Intended for racing – street drivability would be poor - poor low end performance, not at lot of vacuum, etc. So J/ramK was NOT a de-rated 62 405hp short ram. 60-62 short rams water heated, exhaust headers similar in dimension but NOT the same as 63-64, no provision for exhaust heat as Don mentioned in an earlier email plus other dimensional differences. 63-64 390hp ram engine designed for street use and good drivability – which it delivers when properly tuned – with a STOCK solid cam (or close equivalent hydraulic cam conversion). And a pretty good wallup under full throttle as well - if you can keep from shredding the tires in the process – which the late George Riehl used to demonstrate most aptly. Carl B. From: Rich Barber Hi, Val: Agreed—That’s why I put the “?” in there. I think the dimensions and interference issues would be the same. Further wondering why the 405 HP ’62 short ram engines were derated to 390 HP in the J’s & K’s. Different cam or other hardware? Credibility issue? Insurance issue? Interference with marketing of hemi and max wedge-engined Plymouths and Dodges? I’ve even seen literature that indicated one could order a hemi engine in a Chrysler—but no indication any were ever produced. Pity. Ahh, sweet mysteries of life in the fast lane. Rich Barber Brentwood CA From: 'Val Jeffers' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> To my knowledge long rams were not available on 62’s. I also think the short rams were supposedly dealer installed ? Thanks, Val Jeffers Sent from my iPhone
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