Can Am BBC

[Carleen]

Can-Am blocks 68/69 - Winters
# 0-294550 = 4.250" bore with steel liners Experimental Prototype 67-68 Dry sump (427 ci)
# 0-321270 = 4.440" bore with steel liners Experimental Prototype 68 no boss for mechanical fuel pump(430, 465 ci)
# 0-326711 = 4.440" bore with steel liners Experimental Prototype 68 (430, 465 ci)
# 3946052 = 4.440" bore with steel liners (430, 465 ci)
# 3946053 = 4.440" bore with steel liners (430, 465 ci)

Can-Am Block 70 Winters
# 3946052 = 4.440" bore with steel liners (494 ci)
# 3946053 = 4.440" bore with steel liners (494 ci)

Can-Am blocks 70/71 - Reynolds
# O-399204 = 4.5" bore and steel liners (509 ci)
# O-495102 = 4.5" bore and no liners

ZL-1 Factory blocks - 1969 - Winters
# 3946052 427 ci.
# 3946053 427 ci

ZL-1 Factory blocks - 1997 & up
# 3946053 427 ci.

# 3992038 may be 4.44" bore w/ Liners - era?.

# 3946052 Yenko Casting LC 427
# 3946053 Yenko - Casting has YENKO
# 3946053 Yenko - Casting has Y E N K O
# 394605Y Yenko - Casting has Yenko Crest Logo

[Hoovy88]

here are some more...

[Carleen]

Post more Pictures.
That looks like 0-294550 427 CanAm
But someone has modified the block.
Newer threaded Frost plugs and has been machined on the outside of the block.

[Hoovy88]

Now again, According to Guinn, The machining on the side of the block could very well be a fingerprint of what chassis it was in. Each team machined the blocks however they needed for clearance and fitment issues. For what that's worth anyway. Will post more soon.

[JoePientaJr]

This is the front engine pad area. It appears that the block has had some history. I wonder if the initials A.C. are known to anyone.

[Kered-TCracingCA]

Originally Posted by JoePientaJr

This is the front engine pad area. It appears that the block has had some history. I wonder if the initials A.C. are known to anyone.

I just joined and participating in some of these Aluminum Development threads. Yes I know exactly where this block was used. Too bad something famous like this can't be reunited to it's home car.

So ZL-1 Engine #1 was being pushed from the CEC White Room to the Hot Test Room, which was just 175 feet away. The guy pushing it, stopped to use a vending machine and when he walked back around the corner into that hallway, that engine was gone/stolen. Because of GM clout, even the FBI came in. So Engine #2 was heavily escorted, as #1 has never turned up.

So Engine #3 was the first engine that made it into Zora Duntov's care. They had disbanded his Engine Development team, just prior to ZL-1, so was waiting on his first ZL-1 from the Chevrolet Engine team where Frincke was transferred. Thus this got fitted to what would become known as the ZL-1 Super Vette, made famous in an article named 10 Second Ride or whatever it was named. Not getting that title off the top of the brain. So they were using this engine to push the limits on the capability of the platform, this particular engine #3 getting modifications. Then this very unit was built up into the 454 #2 config, and installed in the famed LT-2 car, that was used for the Press showing, to demonstrate 1/4 mile capability.

I have tried to accumulate names of guys in these different departments, but I have that data loose in notes all over the place. So don't know who A.C is, without looking into it.

This is a treat to see these stampings on this very block!

I love stuff like this, like another famed block popped up that I saw belonging to the famed 1966 Penske L88 race car. What is in the car now belongs in the Penske L88 Grand Sport, as some of these guys that do restoration find something rare and it doesn't make it back to the right car!

[Keith Seymore]

Originally Posted by Kered-TCracingCA

Thus this got fitted to what would become known as the ZL-1 Super Vette, made famous in an article named 10 Second Ride or whatever it was named. Not getting that title off the top of the brain. So they were using this engine to push the limits on the capability of the platform, this particular engine #3 getting modifications. Then this very unit was built up into the 454 #2 config, and installed in the famed LT-2 car, that was used for the Press showing, to demonstrate 1/4 mile capability.

This one?

https://www.yenko.net/forum/showthre...ghlight=orange

K

[Kered-TCracingCA]

Yes, the car started with the ZL-1, and that was built into the 454 LT-2.

[JoePientaJr]

Thank you very much. My head is sort of spinning with the information. I have so many questions that to most people would seem awfully stupid, but I’m one for the details. I was actually jumping between sites researching some other blocks I have, (I’m certain they will be of equal interest) when I realized you had responded to my inquiry. I’m going to take a guess that the number stamped underneath the 454-02 had something to do with how you determined this information. Would that be correct? That happens to be the rabbit hole I was going down last night when researching other blocks I have. I’m trying to put together a timeline on these things. PS.. Be prepared for several questions. Thanks again, -Joe