Originally Posted By Cab_Burge
What diameter are the exhaust valves? What about head casting numbers?
All the Chrysler 300 motors before 1962 had solid lifters and those type adjustable rocker arms. All the letter series 300 motors had them until 1964 also scope I think the 1964 300 letter cars used the six bolt valve covers and the later style rocker arm pedestals cast into the heads also scope
You may have gotten very lucky up


Haven't had much time to get into things yet but I did take a moment to check the heads over briefly. They are casting #2206324 with 2.08 / 1.60 valves. Looks like when they did the valve job they installed new TRW exhaust valves and topped them off with aluminum retainers which don't seem to have a great following from what I've heard. Valve springs were about 140# at 1.750" and about 260# at 1.250". I'll keep you posted as I get into things. Still have the cylinders and lifter bores soaking for disassembly. Fingers crossed it comes apart fairly easily without killing anything. luck

Also, I did check for plugs in the rocker shafts. They are installed just after the first set of bolts. Good looking out guys. up

Last edited by MadMopars; 11/21/18 04:00 PM.
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