I know of a "500 MOPAR with B1 heads that has only a "484/500 hydraulic cam in it, .....as opposed to a "600-"750 solid or roller cam that "B1 heads need"...and it works great as a street driven car.
64-68cc comb chamber difference will not matter for a 13sec street engine..i.e., IT wont even know its been changed.....would in a race engine though, so dont overthink here.
Good luck fella.
Sounds like there is a load of "specialist mechanic" BS going on IMO.
Big valve heads, not really required for street use as power from them is only realised at top end rpm. Smaller valves give more low end torque.
You need to start at the beginning and set the timing correctly. Then start tuning the carb.
A trip the rolling road in Essex will get the full potential of your setup and save you weeks of fiddling around while not getting the results you want.
Some interesting reading and plenty of good advice too.Let me state right off I could not make SBC alloy cylinder head if my life depended on it , so I am very slow to bring the Quantico cylinder heads country of origin up,but I am curious. will a relatively unknown V8 Cylinder head manufacturer ,produce a cylinder head as good as say "Made in USA " Brodix or AFR Dart, ETC ETC,The old Camel hump heads Ported by the right hands were well able to produce good power.
They received really good reviews on YouTube by a port and polisher in America. With higher than advertised numbers when measured.
The problem is of course that one of my camel hump heads was cracked. So I bought new heads that I though would increase the power...
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