Engine ID
Thread Starter
Instructor
Joined: Jan 2003
Posts: 134
Likes: 1
From: Red Lion PA
Engine ID
I'm trying to ID my engine my casting # on the block is 394167? I can't make out the last #. The only thing I can find is a 3941678 which could be a 302, 327 or a 350 made is 1968-1969. I read some where you can tell a 350 4BM by lookin @ the front of the engine above the timing cover to see if there is an oil pressure hole (plugged) and if the block has an extra hole drilled and tapped @ the top center rear of the engine for a HD bell housing. Is there any truth to this? Some of the other "facts" in this book seemed questionable.
Burning Brakes
Joined: Jul 2001
Posts: 1,160
Likes: 0
From: Ajax Ontario
Re: Engine ID (cjgemm)
Suggest you include the casting date code (just above the block number) and also all the numbers on the stamp pad. That'll make it easier to track down. I don't have the reference material handy but there are links that some members will provide you with that can assist you with determining exactly what it is. That will not be a 350 4 bolt block though, it'll be 2 bolt. I have the '68 327 with the same casting number. Good luck!
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,923
From: Washington Michigan
Re: Engine ID (cjgemm)
That block (3914678) was used from '68-'79 in all kinds of large-journal 327 and 350 2-bolt applications in all car and truck lines. The tapped hole and plug above the timing cover has nothing to do with main bolts - it just identifies a Flint block (vs. Tonawanda). :thumbs:
Burning Brakes
Joined: Jul 2001
Posts: 1,160
Likes: 0
From: Ajax Ontario
Re: Engine ID (cjgemm)
The date code will help you sort this out. If date code is '68 or '69 it could be anything from 302/327/350. Only way to know for sure is by pulling the pan and reading the crank part number. If engine later than these years, it could only be a 350 as the 302 and 327 were discontinued by then. Note the 327 was discontinued in the Vette after '68, but was used in other products in '69.
If the heads are original to the engine, do they have the "double hump" pattern? These were used through '68, commonly known as "fuelie" heads, but feature different valve sizes, such were used on "base" engines as well as higher perf. versions. Any of the "Chevy casting number" books or sources will help you identify this!
If the heads are original to the engine, do they have the "double hump" pattern? These were used through '68, commonly known as "fuelie" heads, but feature different valve sizes, such were used on "base" engines as well as higher perf. versions. Any of the "Chevy casting number" books or sources will help you identify this!
