engine stamp question
Thread Starter
Intermediate
Joined: Apr 2016
Posts: 35
Likes: 0
engine stamp question
Good morning all
I have just purchased a 1964 coupe still getting safetied . It has a 350 in it at the moment with a Hurst shifter. Otherwise it seems to be original. It came with an extra 327 as well
I am confused with the stamping #s They are definitely (checked 10 times) F0127YWC
the casting #s are 14 GM 3858174 these are no problem. Its the stamping that I cannot figure out.
Could anyone shed some light Please
Thx
Ken
I have just purchased a 1964 coupe still getting safetied . It has a 350 in it at the moment with a Hurst shifter. Otherwise it seems to be original. It came with an extra 327 as well
I am confused with the stamping #s They are definitely (checked 10 times) F0127YWC
the casting #s are 14 GM 3858174 these are no problem. Its the stamping that I cannot figure out.
Could anyone shed some light Please
Thx
Ken
Team Owner
Joined: Feb 2003
Posts: 54,062
Likes: 9,396
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
can you post a clear picture. YWC is not a valid suffix code. WC was used from 66-68 in trucks but C could stand for a carter carb as well. so can you also get the date code from the block its on the opposite side of the casting number
Thread Starter
Intermediate
Joined: Apr 2016
Posts: 35
Likes: 0
I will have another look . When you say date code do you mean the casting #s 3858174 that are raised or is there another stamp did not see. The stamp is on the passenger side at front . Where would the code you need be? Thx for the help... could it be Marine???
Team Owner
Joined: Feb 2003
Posts: 54,062
Likes: 9,396
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
pictures worked. but the casting date is going to be close to where you got that last picture of the casting clock
Thread Starter
Intermediate
Joined: Apr 2016
Posts: 35
Likes: 0
that clock is towards the passenger side from the GM14 pic Is the date you want somewhere farther towards the passenger side??? I did nit see anything else but will look again....Love looking at things in the garage...LOL
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Thread Starter
Intermediate
Joined: Apr 2016
Posts: 35
Likes: 0
Administrator
Joined: Jul 2000
Posts: 53,980
Likes: 6,207
From: About 1100 miles from where I call home.
These 2 pictures are from a 1966 #174 327 block I had.
The casting date is directly across from the block number. on the edge. The format is G-28-5 (M-D-Y)
The casting date is directly across from the block number. on the edge. The format is G-28-5 (M-D-Y)
Thread Starter
Intermediate
Joined: Apr 2016
Posts: 35
Likes: 0
Team Owner
Joined: Feb 2003
Posts: 54,062
Likes: 9,396
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
That was cast on January 24, 1966 for a 66 model year car But the suffix code is throwing me for a loop. As YWC is not in my book of codes. But YW is as a 67 427 truck block. But this block is not that. If the W is upside down and should be a M that could was used in 67-68 as a 327 used in trucks. But the casting date says that's not it. If the W was a mistake a YC is the code that would make sense as that was used from 66-69 as a 327 truck block. So I'm not sure the original use.
Last edited by Nowhere Man; Aug 19, 2016 at 11:15 AM.
Administrator
Joined: Jul 2000
Posts: 53,980
Likes: 6,207
From: About 1100 miles from where I call home.
I see an inquiry on an automotive site asking about stamping Fo316YWC from 2010 in a #174. Baffled by suffix.Was told it was a 307 but others said no. He never got an answer...
Team Owner
Joined: Feb 2003
Posts: 54,062
Likes: 9,396
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
If I was to guess I would say it's a factory error. And since its most likely a truck block it has not been given much thought or research unlike a error made for a Corvette block.
Team Owner
Joined: May 2006
Posts: 37,654
Likes: 1,110
From: CA
WC 1967
283
tur hydro 175 2 C-20 to 35
WC 1968
307
m/t, 3 spd - 200 2 C-10 to 35
AND
YC 1966
327
m/t, A.I.R. - 220 4 C-10 to 25
YC 1968
327
m/t, A.I.R. - 240 4 C-10 to 25
BIG BLOCK...
YC 1969 Truck 366 235 L-41 60
Administrator
Joined: Jul 2000
Posts: 53,980
Likes: 6,207
From: About 1100 miles from where I call home.
Yeah, like everyone else, I could not find YWC. I did see a listing for YC, which showed a 1966 327, I think for a truck, with 220 hp. Interesting that the date lines up.
EDIT, and for the second time in the thread, somebody beat me while I was typing. I'm going for more coffee...
EDIT, and for the second time in the thread, somebody beat me while I was typing. I'm going for more coffee...
Last edited by vettebuyer6369; Aug 19, 2016 at 11:42 AM.