After going through several threads I think I know what the engine is except the engine #. 235 cast July 31, 1957 My guess on the 4th pic of the engine ID is F806H 1131397. I couldn't find another one stamped like this. Please grade my home work
In my younger years I worried about the return on my principal now the older I get I worry about my principal being returned.
It has been double stamped. The original block may have been replaced with a new one. Does any of the block stamped numbers agree with your title and/or VIN tag?
Last edited by buoymaker; 04/21/202210:52 PM.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
No Title and vin match but look like engine numbers which I know was not unusual back then. I had a 51 that with that way. This truck is a 2nd series 55.
In my younger years I worried about the return on my principal now the older I get I worry about my principal being returned.
Block and Head casting codes and Block and Head date casting codes cannot be changed without the attempted changes being obvious.
However, it is not uncommon to find odd looking Engine Serial Numbers - these were codes stamped into that "ledge" on the block when the engine was placed in a truck/chassis on the assembly line.
That stamped Engine Serial Number could be ground-off and a different code could be stamped on that ledge. Or, a second Engine Serial Number could be later stamped on that ledge.
The factory stamped 235 engine code F806H is from a 1957 3000 series truck...Chevrolet stopped putting serial numbers on their engines at the end of the 1956 model year.
F = Flint Engine Plant 8 = Month 06 = Day H = 1957 235 for a 3000 series truck
The hand stamped number doesn't match any Chevrolet factory number format I've ever seen...it could have been from an engine rebuilder or State issued for some reason.
