Corvette Engine Block ID?

[bills69l78]

Hello,

I am looking for help to decode the following SBC.

Block Casting # 3914678
Head Castings # 3917291
Crank Casting # 3911001

Front Pad reads V0617HH
781151984

Pass Side above frost plug,
A44667
78N

Any help would be appreciated.

Thanks,

Bill.B

 

[jdp6000]

68 camaro Z28 block...see link

http://www.camaros.org/diffs68.shtml

 

[jdp6000]

Head is for small block chev casting #3917291 used in 1968-69 327-350 and
1967-70 302-327 1.94 / 1.5 valves and Camel hump, no accessory holes

 

[jdp6000]

crank casting 3911001....is for 307,327...cast....medium journal...3.25" stroke

looks like its sizing up to a 327

 

[bills69l78]

Thank you for your reply. I am curious about the HH suffix as well as the date casting. Any thoughts?

Bill

 

[jdp6000]

Whats the motor out of? there is reference to the HH suffix for a 1967 corvette 327-300 hp....

http://www.corvetteactioncenter.com/specs/c2/1967/67id.html

 

[bills69l78]

I do not know. A friend of mine has had it in his garage for years. It is a standard bore short block missing the timing chain cover and oil pan. The heads are removed and the intake, carb and distributor are missing as well. I understand that V0617 is Flint, June 16. Does the # 781151984 look like a partial or full VIN for a Corvette application?

Thanks,

Bill

 

[Vettehead Mikey]

HH is an engine code that was used on 65/66 327 cu in Corvettes, casting number 3914678 was the correct number for those years too.

You are right that V0617 is Flint, June 17.

The casting date looks a little weird though

http://www.nastyz28.com/sbchevy/spcode5.html

 

[bills69l78]

Mike ,

Thanks. I do not know Corvette VIN #'s. Does the 781151984 stamped close to the V0617HH look like a partial or full Corvette VIN?

Thanks,

Bill

 

[jdp6000]

I don't know what that number is. There should be some letters...or at least one letter in there somewhere.

J

 

[jdp6000]

Block and heads definitely match a 1968

http://www.corvetteactioncenter.com/specs/c3/1968/68id.html

 

[jdp6000]

block, heads and crank match at this site

http://www.thedirtforum.com/castings.htm

 

[jdp6000]

Mike ,

Thanks. I do not know Corvette VIN #'s. Does the 781151984 stamped close to the V0617HH look like a partial or full Corvette VIN?

Thanks,

Bill

I think it should be 78L151984...this would make it a 1968 camaro vin.

Jim

 

[jdp6000]

1 2 4 3 7 8 L 1 5 1 9 8 4 for a coupe or 1 2 4 6 7 8 L 1 5 1 9 8 4 for a ragtop. Both 68 Camaro vins.....actually there goes that theory...68 camaros had the last 6 starting at 300001...67 started at 100001. You sure on that partial vin???

Fun...yes...but its bedtime. Will check more tomorrow.

jim

 

[bills69l78]

Jim,

Thanks for you help. I will have to investigate the partial VIN further. I agree that it looks to be Camaro, however Camaro's did not use the HH suffix. You are right that the 68 Camaro's started at 300001. It looks more like a 67 Camaro VIN #. I do not have a use for the block myself, but I would like to find the correct car for the block so we may re-unite the owner of the Camaro or Corvette with the correct engine.

Thanks,

Bill

 

[Vettehead Mikey]

Mike ,

Thanks. I do not know Corvette VIN #'s. Does the 781151984 stamped close to the V0617HH look like a partial or full Corvette VIN?

Thanks,

Bill

Maybe ask over in the C2 section? I don't know midyear VIN codes at all.

 

[JohnZ]

That block was used for large-journal 327's ('68 only) and for 350's from '68-'79; the crank says it's a 327. The VIN derivative says it was originally installed in a '68 Acadian (Canadian Pontiac) built at the Oshawa, Ontario assembly plant. The 291 heads came in both 1.94/1.5 and 2.02/1.6 valve sizes; no way to tell which ones you have unless you pull the heads and measure the valves.

 

[bills69l78]

John.

Thanks for that reply. I will search for some more info on a Nova wesite. Do you recommend any sites on Nova or Acadian?

Thanks again,

Bill.B

 

[craig32]

hi all,
according to MorTec, the block is 1968 302(Z28), 327, 350 2 bolt main; heads 64cc chamber. Heads should be 1.94 intake valves
According to yearone, the HH designation was for 1968 Impala 327 250 HP 4bbl 8.75:1 compression ratio
Hope this helps.

Craig

 

[JohnZ]

John.

Thanks for that reply. I will search for some more info on a Nova wesite. Do you recommend any sites on Nova or Acadian?

Thanks again,

Bill.B

The fact that it was originally installed in an Acadian doesn't make the engine any different than if it was installed in a Nova, Camaro, or Caprice; they're all the same application as far as the engine is concerned.