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Need held with my 67 sbc ID code. The engine casting number is 3903352 and tells me its a 67/327. The question is the ID code T022I(eye)HA? I can't find anything that's a 67 with a code IHA. The heads are 3917291 if that helps. What engine do i have?
The engine assembly date will usually be four digits and the letter "I" was substituted for a "1" in some date codes. In your case, the engine assembly date is 02/21. The Lime Book" pages below explain this. You'll also note that "HA" code was only used in a Camaro (CA) in 1969. The only use in 1967 was in a full size Chevrolet (PA). Check the casting date on the block to determine what year the engine was built since this designation was used in multiple production years. The partial VIN on the block should also match the car's sequence number of the VIN if it's original to the car.
Should be on the same pad as the engine code given above. This CRG webpage show a typical engine stamp with the Partial VIN. The Partial VIN should also tell the model year the engine was installed in, the assembly plant and the last six digits of the car's VIN.
The block casting date is about a week before the assembly date, which should be in the proper time span. Without a partial VIN it's impossible to know if the engine is original to the car. According to the Lime Book, most of the 327 Camaro engines were in the area of ME through MN codes.
Would it be safe to say its a 275 hp 327? would it be a small journal? Could it be a warranty replacement? I plan on building a 383 or 400 so if this motor isn't original then i may turn it into a 383. Thanks again
Many years ago I had a friend with a collector quality 1965 Corvette. He had a shop deck the block, telling them explicitly not to machine the stamping surface in front of the passenger side head location, and they milled it anyway.
I'm not very knowledgeable on the journal sizes of a small block Chevy engine. However, the CRG page linked above states "All 67 small blocks, with the notable exception of the SS350 block, were machined with 2.30 inch main journals. The 67 SS350 block and all 68 and later small blocks had 2.45 inch main journals. The blocks used for the 67 SS350 engine were also machined for clearance of the longer stroke of the 350 crankshaft". If the engine was a replacement, the engine code would have been a CE number stamp. I believe the page linked above talks about the replacement blocks too.
01-27-2022, 06:52 PM
