I wanted an engine with a better flowing head and higher compression for power and economy but I want to spend as little as possible for machine work and parts seeing how I have very little money for engines and cars and such.
I thought about intake valve to exhuast valve size ratio of the slant six and compared it to other engines and came to the conclusion that the slant six could use a much larger intake valve while retaining the stock exhaust valve. By only installing larger intake valve I cut my machining costs and parts needed. (Please share thoughts)
So I installed 1.81" big block mopar exhaust valves on the intakes and extensive bowl porting on both the intake and exhuast ports. I left the runners and floors pretty much stock, just gasket matching.
Had the head milled .100" and the deck milled for a 10.2 comp ratio. Enginebldr 340 springs and retainers and they even come with the single groove keepers needed for the new valves!
Put it together and the pushrods were to long. A good time to try my cut and weld rockers rather than buy new pushrods. Plus the comp 264 cam I have has a little less lift than advertised.
The stock rockers averaged about 1.47 ratio. Now they're about 1.58 after cutting about .070" and I was able to adjust for pushrod length.
We'll see how they hold up, so far so good. My welding skills I would describe as average at best so they're not so pretty but I think they're strong enough.

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Franklin
'61 Valiant