Need help deciphering 327 engine codes
Thread Starter
Pro
Joined: Feb 2010
Posts: 643
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From: San Francisco CA
Need help deciphering 327 engine codes
I'm trying to sell my 327 engine...it was installed by the previous owner after the original 1965 327 cylinder wall cracked.
Any help is appreciated.
Here are the codes. The only one that I can verify with the Nolan Adams Guide is the block casting #3782870: corvette block Jan. 15, 1964
The SB suffix is a mystery.
Block: stamped number in front YL66638FOI25SB
Block Casting Number: 3782870 date code A 15 4
Intake: Casting Number 3866922 date code A 27 5
Cylinder Heads: Casting number 3782416 Date codes A 14 4 and A 4 4
Any help is appreciated.
Here are the codes. The only one that I can verify with the Nolan Adams Guide is the block casting #3782870: corvette block Jan. 15, 1964
The SB suffix is a mystery.
Block: stamped number in front YL66638FOI25SB
Block Casting Number: 3782870 date code A 15 4
Intake: Casting Number 3866922 date code A 27 5
Cylinder Heads: Casting number 3782416 Date codes A 14 4 and A 4 4
Le Mans Master
Joined: Apr 2006
Posts: 5,347
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From: San Clemente CA
That block was used not only in Corvettes but passenger cars with 327's also so I would bet that is where that engine came from. The SB is strange as is the VIN derivative. I've never seen that type VIN in a Corvette. For the heads did you mean 3782461 and not 416?
Don
Don
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Joined: Feb 2010
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From: San Francisco CA
Thanks
Race Director
Joined: Jul 2001
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FOI25SB F= Engine was built at the Flint MI plant on 0125= Jan 25th assembly date SB= 327 cu in.Impala 300HP L-74 Power glide 4-Brl Hyd Cam
3782870 date code A 15 4: Cast Jan 14 1964.
YL66638 Y=Wilmonton,DE assembly plant Y= Impala 66638= car serial number
Thread Starter
Pro
Joined: Feb 2010
Posts: 643
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From: San Francisco CA
Thanks for that info...mystery solved. Any info on the intake?
Thread Starter
Pro
Joined: Feb 2010
Posts: 643
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From: San Francisco CA
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Verdad Gallardo
Team Owner
Joined: Mar 2003
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From: Greenville, Indiana
Your intake manifold was used in all 1965 standard 327 V-8 applications including the 283/220 and 327/250 for all carlines.
It was also a service replacement manifold in later years. There should be a cast date on it, behind the carb.
It was also a service replacement manifold in later years. There should be a cast date on it, behind the carb.
