#Small block chevy numbers stamped how to
#Small block chevy numbers stamped serial number
#Small block chevy numbers stamped driver
#Small block chevy numbers stamped code

'Main Caps' is the number of bolts holding the cap. Notes (for below): 'High Power' is the maximum rate HP this block was used for, 'Low Power' is the lowest rated horsepower otherwise 2 or 4 bolt can mean either design.Ĭhevy Small Block - Engine Block Casting Numbers In 1968 the main bearing saddles were increased in size from 2.3' to 2.45'. While 6 different bore size blocks have been produced, the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec Big block on the right side of engine above the oil pan rails.Ĭasting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)).

#Small block chevy numbers stamped driver

Small block casting date is located on driver side rear of block on flange forward ofīellhousing. Anyways, that's what that circle thing is (if you happen to The clock is a circle of 10 dots, one dot for each hour of a shift (usually 10 hour shifts).Īn arrow points to the beginning of the shift an another dot outside the circle indicates what On some Saginaw blocks, intakes and exhausts a 'clock' was cast into the block. (1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN) Technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what Pad (in front of the cylinder head), or on the transmission flange somewhere.

#Small block chevy numbers stamped serial number

Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped Number, model year, assembly plant designation and vehicle serial or sequence number. The format consists of divisional identification

#Small block chevy numbers stamped code

The vin code format is stamped onto most engines. Machining operations (decking) will obliterate the engine ID.Įngine ID Code Example: V0101CLJ - (V = Plant, 01 = Month, 01 = Day, CLJ = Engine Suffix Code)Īnother example: T0830CTY - (T = Tonawanda, 08 = August, 30 = 30th day, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400) The engine date must precede the car build date, otherwise something is amiss. 6 cylinder engines are stamped on the passenger side of the block behind theĬlick here for Chevy Engine Code Listings V8 codes are stamped on a pad just forward of the right side (passenger)Ĭylinder head.

#Small block chevy numbers stamped how to

The point of this article is to help you figure out how to decode stuff.Īll engines are stamped with an engine ID code, consisting of assembly plant code, productionĭate and suffix code. Lastly, in extreme cases, you'll want to verify the numbers stamped onto the component were the ones stamped into it originally and aren't restamped. You need to decode the engineĪnd see if it matches the vehicle, and if the code signifies Z28 or SS equipment.

Numbers matching is important when you're trying to decode a Z28 or Super Sport where the VIN won't identify the vehicle as such. But numbers correct is not numbers matching. Some folks use these terms loosely, or will say 'numbers correct' or something to that effect.

The partial VIN will match the vehicles VIN. This match is done via the PARTIAL VIN stamp on the component. When people say 'It's numbers matching' - what they mean is the engine (or other component, i.e the transmission) can be MATCHED to the vehicle it was This is my opinion, and the generally accepted norm:

The Engine Code page is where this topic is further detailed. This page has basic information on it, but it's a portion of the Small Block Chevy numbers information. QUICKLY IDENTIFY A CHEVY ENGINE CLICK HERE - for decoding engine codes. The engine code and partial vin # will accurately nail down whatever the thing is rather quickly, and the other information will fall into line with that. The primary pieces of information you'll decode are the Engine Code and Partial VIN. This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. Small Block Chevy Engine Block Identification