This head is a 305 HO head from 87-91 models and the chamber size is 58cc. Also, this head has 1.85/1.50 valves.
58.cc low torque swirl chamber head
That head was used on the 305 engines from 1987 to 1991. NOTHING SPECIAL about that head at all.
58cc
I couldn't find that number, but 3932441 is 69 and 70 350 with 76cc chamber.
64 cc's
The combustion chamber size of a Chevy 350 stock head typically ranges from 64cc to 76cc, depending on the specific cylinder head casting.
76cc...and those heads are crack prone and not recommended for performance.
I measured mine 14102193. Result 68cc. You find 65.3cc from internet, I trust my measured result. I measured 4 cylinders , 2 from each head. Difference was between 68-70cc. -Tuomas
NO NO NO the combustion chamber is smaller and will have too much compression.
Yes they both have 4 inch bores but if the chamber size where the valves is different it will change the compression.
write down the casting number under the valve cover and compare it to the list of chevy head castings at mortec.com
Timing not set properly, carbon deposits in the combustion chamber, cracked head, blown head gasket, overheating.