I just went and looked at what's supposed to be a 427. The numbers on the back of the block are 3989854 or 3969854  (hard to tell). On the front pad T0614TKB. On the back behind the intake is GM8T. I also found K24 on there somewhere too. It's seems like a good deal. Rebuilt 500 miles ago, the guy says it has a truck crank in it ground down to be a mild stroker (does that make sense) With heavier GM rods, 11.0 forged pistons, crane cam, crane gold roller rockers, Holley intake and newer 850 Holley. He wants $2000 for it, I just want to know what the block is 427 like he says or 396. I'm no where near a Barnes & Noble and I don't have a numbers book.

Thanks for any input.

Matt

3969854....396.......69......2 or 4 bolt
Haven't found 3989854 yet

Hope this helps

Big Al

Another list shows 3969854 as apossible 402 or 454 1972 2 bolt-no 3989854 found

Big Al

Matt.

I think the correct number is 3969854. It's either a 454 or 402 from 69-72.

rearn2go7238811.433599537

  You're right Al......depends on which site you're looking at. It could be a 396, 402 or 454. One site says 1972 only, another say 1969-1972.

Jim ; Love your 72 - Mines a T-Top and hopefully someday will look like yours . How did you post a pic on your signature ?

Big Al

Thanks Al. Actually, I could never figure it out. My wife is a computer programmer and she did it for me.

My book shows:
#3969854
1)402ci-69-72 passenger/Chevelle/Camaro 4-barrel carb, 2 & 4 bolt main

2)402ci- 1970 Nova-2 & 4 bolt

3)400/402- 70-72 Truck 2 & 4 bolt

I think if you look closely at the casting # again, you will see it is a "6", not an 8. They can look amost identical in a casting #. I personaly would run away from any 402. While most any big-block heads/intake/cams/etc. will fit, the bore size is goofy, and sometimes hard to get parts(pistons) for. I had a 69 Chevelle drag car once, that we bored the engine on, thinking it was the original 396. We just took it to the machine shop and said, "Bore it .30 over". We ordered pistons from Manley for a .30 over 396. Needless to say, things didn't fit together very well!!! Many $$$ down the drain.
The "K24" is the casting date, Nov. 24.
The stamp number, however, is confusing.
T0614TKB
T= Tonawanda assy plant. Most big blocks were assembled there.
06= June
14=(June)14th
TKB= engine suffix #: tells what vehicle the engine was intended for, as well as trans(man/auto).
While it's possible to have a Nov. cast engine assembled in June, it is out of the norm.
I would stay away from this one; it's already been mis-represented as a 427.

[QUOTE=apasbigal]

Jim ; Love your 72 - Mines a T-Top and hopefully someday will look like yours . How did you post a pic on your signature ?

Big Al

[/QUOTE]

Big Al,
Have you read this information yet?
Give it a try and PM me if you have problems.

Thanks Guys, I'm gonna pass on it.

Matt