Re: Missing numbers on a 1970 383 engine?
[Re: scubakida]
#1915949
09/20/15 01:03 AM
09/20/15 01:03 AM
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Joined: Oct 2003
Posts: 21,345 Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Always heard that an engine replaced under warranty was not stamped.
But, if replaced under warranty... It's not numbers matching.
And if someone bought a replacement engine from the parts counter... Same story.
**Photobucket sucks**
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Re: Missing numbers on a 1970 383 engine?
[Re: scubakida]
#1915989
09/20/15 04:25 AM
09/20/15 04:25 AM
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Joined: Aug 2003
Posts: 43,285 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,285
Bend,OR USA
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Do you have the build sheet or broadcast sheet? If not do you know how to tell what the "scheduled Production date " is on your car? If so look at te SPD and then the casting date on the block from your car, if the block was cast after the SPD then you DO NOT have the original block, sorry If the block was cast before the SPD, lets hope so then it is possible for it to become the "original" block More than one Mopar car that had the original "original" block destroyed or remove before the last or current restoration has ended up with a "factory replacement" numbers matching block in the car according to many internet rumors and allegations
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Missing numbers on a 1970 383 engine?
[Re: 62maxwgn]
#1916148
09/20/15 03:54 PM
09/20/15 03:54 PM
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Joined: Jan 2004
Posts: 9,066 Eugene, Oregon
minivan
master
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master
Joined: Jan 2004
Posts: 9,066
Eugene, Oregon
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Do you have the build sheet or broadcast sheet? If not do you know how to tell what the "scheduled Production date " is on your car? If so look at te SPD and then the casting date on the block from your car, if the block was cast after the SPD then you DO NOT have the original block, sorry If the block was cast before the SPD, lets hope so then it is possible for it to become the "original" block More than one Mopar car that had the original "original" block destroyed or remove before the last or current restoration has ended up with a "factory replacement" numbers matching block in the car according to many internet rumors and allegations Boy,I didn't know that !!!!!! Check the casting date on the block.. Possibly a pre 68 block..
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Re: Missing numbers on a 1970 383 engine?
[Re: scubakida]
#1916203
09/20/15 05:45 PM
09/20/15 05:45 PM
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Joined: Jan 2003
Posts: 25,951 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
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Posts: 25,951
Rio Linda, CA
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I recently pulled the engine only to find the area where the numbers are usually stamped are free from any markings. Did you check both the top pad by the distributor and the bottom pad by the pan rail? Top pad stamping often disappears when a block is decked.
The INTERNET, the MISinformation superhighway
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Re: Missing numbers on a 1970 383 engine?
[Re: John_Kunkel]
#1916267
09/20/15 07:46 PM
09/20/15 07:46 PM
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Joined: Jan 2003
Posts: 75,088 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
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I recently pulled the engine only to find the area where the numbers are usually stamped are free from any markings. Did you check both the top pad by the distributor and the bottom pad by the pan rail? Top pad stamping often disappears when a block is decked. ^^^^ this , the OP doesn't say what pad is blank , we can only SPECULATE what pad has no numbers on it.
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Re: Missing numbers on a 1970 383 engine?
[Re: John_Kunkel]
#1917688
09/22/15 09:49 PM
09/22/15 09:49 PM
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Joined: Aug 2015
Posts: 7 Buffalo, Ny
scubakida
OP
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OP
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Posts: 7
Buffalo, Ny
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I recently pulled the engine only to find the area where the numbers are usually stamped are free from any markings. Did you check both the top pad by the distributor and the bottom pad by the pan rail? Top pad stamping often disappears when a block is decked. thanks for everyones input on this topic, I found the following markings on the top pad by the distributor. S383 15 I looked up and according to the date chart, it states its from 1962, and I have no idea what the 15 stands for, Januarary 5, 1962? Are there any other markings internally, as the manifold numbers match out to a 1970 383. looks to me like someone rebuilt the engine with a 1962 shortblock? Thanks
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Re: Missing numbers on a 1970 383 engine?
[Re: scubakida]
#1917988
09/23/15 12:14 PM
09/23/15 12:14 PM
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Joined: Jan 2003
Posts: 75,088 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
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I recently pulled the engine only to find the area where the numbers are usually stamped are free from any markings. Did you check both the top pad by the distributor and the bottom pad by the pan rail? Top pad stamping often disappears when a block is decked. thanks for everyones input on this topic, I found the following markings on the top pad by the distributor. S383 15 I looked up and according to the date chart, it states its from 1962, and I have no idea what the 15 stands for, Januarary 5, 1962? Are there any other markings internally, as the manifold numbers match out to a 1970 383. looks to me like someone rebuilt the engine with a 1962 shortblock? Thanks No, that is a service replacement 383 short block, look for the casting date on the side of the block
running up my post count some more .
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Re: Missing numbers on a 1970 383 engine?
[Re: Cab_Burge]
#1918085
09/23/15 02:39 PM
09/23/15 02:39 PM
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Joined: Jan 2003
Posts: 28,069 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,069
Irving, TX
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Do you have the build sheet or broadcast sheet? If not do you know how to tell what the "scheduled Production date " is on your car? If so look at te SPD and then the casting date on the block from your car, if the block was cast after the SPD then you DO NOT have the original block, sorry If the block was cast before the SPD, lets hope so then it is possible for it to become the "original" block More than one Mopar car that had the original "original" block destroyed or remove before the last or current restoration has ended up with a "factory replacement" numbers matching block in the car according to many internet rumors and allegations There's a low-scruples Mopar guy in southern Oklahoma that traded me an 18 spline 833 for my bare 383 service block. The block had no numbers on the VIN pad but carried a production date that lined up nicely with the build date on his 383 RT Challenger.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Missing numbers on a 1970 383 engine?
[Re: autoxcuda]
#1951483
11/15/15 10:58 AM
11/15/15 10:58 AM
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Joined: Jan 2003
Posts: 6,433 Abilene, Texas
fastmark
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master
Joined: Jan 2003
Posts: 6,433
Abilene, Texas
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It is not the original block. It does not constitute as original. But a blank vin pad block would be the next best thing.
A 440 block is obviously wrong for the car as you can spot the pad just right of the distributor.
With the advent of inexpensive stroker kits, just put in a stroker rotating assembly. You would just be making a low deck stroker with a little smaller bore than a 400 block. I agree. People make way to much out of the whole matching numbers thing. Mopars are stamped in the vin and fender tag to prove motor, hp, and trim. It's the Chevy crowd that started the matching numbers crap. They have to match numbers to prove the same. If you are worried about the casting date, just find a earlier cast F383 HP. HOWEVER, most premium rebuilds require milling the deck of the block in order to square the deck and get a good flat surface for the head gaskets to seal. If you mill the deck on a 383, those stamped numbers on that pad are removed. Those numbers were originally stamped for a mechanic to easily determine the internals and what cid he was dealing with.
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Re: Missing numbers on a 1970 383 engine?
[Re: AndyF]
#1952167
11/16/15 03:58 AM
11/16/15 03:58 AM
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Joined: Jan 2003
Posts: 17,521 Las Vegas, NV
6bblgt
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,521
Las Vegas, NV
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unless you KNOW differently, the best possible truth to your situation is that you have the engine that was replaced in your car when it was about a year old & it's been there 44+ years keep it - that's history!
Last edited by 6bblgt; 11/16/15 03:59 AM.
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