Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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did a few more test drives and same results...

driving around 5-10 minutes, no faster than 25 mph, Cloudy evening, temps around 85F 60% humidity. coolant level was just over the core. car fired right up, let it idle for about 10 minutes.

car ran fine, accelerated smoothly. Saw some bubbles on acceleration and when i came to a stop, pulled in driveway and cut it off, no puking but had some bubbles. ran temps. top of radiator was around 190-195 bottom around 160-65. cylinders walls were around 200-210. fired it back up no issues, and pulled it into garage for the night.

double checked timing, it is around 15 deg

...verified with timing light, but set by ear and engine feel & sound
plugs gapped to .040"
point gap set to .018"

car fired right up, idles great, no sputtering or stuttering
exhaust is a constant synchronize put put put

if i retard or advance a little I get a slight miss at idle not consistent but random every 30+ seconds or so

put put put put poof put put put put put put


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Your recent experience with engine is typical of a good running early 6. The "poof" is corrected by gaping spark plugs to 0.040" and advancing timing a few degrees. Corrects for modern 85+ octane gasoline versus the 50-60 octane gas when those vehicles were produced.


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Thanks Chipper...
as noted gapped to .040 if i advance to 18 deg it starts to stutter and poof

just not comfortable driving it more that 5-10 minutes as it gets so hot so fast. any longer than that and it starts puking which looses coolant and gets even hotter :!


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cool video talking about cooling system, granted it is from 1936 very similar concept minus the water directed to the valve seats.
Jump to 3:15 in video or you can watch the intro :)



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Has this car been checked for combustion gas in the coolant?

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Originally Posted by bloo
Has this car been checked for combustion gas in the coolant?
https://vccachat.org/ubbthreads.php...down-3-air-temp-concerns.html#Post471335


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