(Not meaning to hi-jack this thread... but...)


It would seem that the New Yorker and Imperials had the 413 RB engine, and that the "low-priced Chrysler (Windsor)" should have a "smaller", less powerful engine, that was yet "different" from the 383 B motor that was available in the De Soto...

So, they came up with an " under-bored 413"....in all other aspects, it's the same mill as the 413 - same heads, same valves, same crank & bearings...

I think Chrysler realized after two seasons, that this wasn't worth the effort, and just offered the 413 and the 361 ( still a "B" motor).
Pistons and rings are right pricey for the 4.0312 motor, so if the original bores and pistons are beyond help, I think I'm going to have it punched-out to a 426 or 440. At least the performance gains would justify the machine shop expense; doing a .020"-over rebore just isn't worth it in my book - not when those pistons are running $50 /slug.

I bought the car because it has a really solid body and nice interior...I hope I'll get it back together some day !