Engine numbers and block casting help
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Intermediate
Joined: Oct 2011
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Engine numbers and block casting help
I have an engine that was sold to me with the vette I bought that has a cast number 3869942 which means 427 if I understand it right. Then I can't find a date in the back of the cast. The stamping reads TOI07IL 6112215 then my vin id 6111420. I'm told that this is the code correct numbers and the original numbers to the car. can some one explain this to me thank you .
Race Director
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From: NorCal
I have an engine that was sold to me with the vette I bought that has a cast number 3869942 which means 427 if I understand it right. Then I can't find a date in the back of the cast. The stamping reads TOI07IL 6112215 then my vin id 6111420. I'm told that this is the code correct numbers and the original numbers to the car. can some one explain this to me thank you .
The stamp pad suffix "IL" would indicate a 1966 or 1967 427 ci 390 HP engine.
It appears that the VIN for the car and the stamp pad # do not match -6112215 vs 6111420 - and are some 795 units apart, so I would question it being original to the car.
Can you post some pictures of the casting and stamp pad numbers?
Edit - are you sure that the third character in the stamp is an "I"? It should be a numerical designation - like "1", which would then indicate that it was built on January 7th. The "6" in the VIN you cite should be a "S" for the St. Louis assembly plant. What is the number in the car's VIN right before the 6/S - is it a 6 or a 7?
Last edited by tuxnharley; Mar 30, 2012 at 03:20 PM. Reason: more info/question.
Thread Starter
Intermediate
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The letter is 6S Also I found that the I does stand for 1. But why does the engine not have a date in the back top of rthe block cast givinig a correct date or am i missing something. I will need some time to get any pic's of the stamp pad a block.
Team Owner
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From: Washington Michigan
I have an engine that was sold to me with the vette I bought that has a cast number 3869942 which means 427 if I understand it right. Then I can't find a date in the back of the cast. The stamping reads TOI07IL 6112215 then my vin id 6111420. I'm told that this is the code correct numbers and the original numbers to the car. can some one explain this to me thank you .
The "I" character was used in place of the "1" character in the engine plant stamp - that's perfectly normal; there's no "S" in the VIN derivative stamped on the front pad - just a "6" for the model year, followed by the last six digits of the VIN.
The casting date on a 942 block is found just above the pan rail, a couple of inches forward of the starter, and it's upside-down.
Last edited by JohnZ; Mar 30, 2012 at 03:06 PM.
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67 Corvette
Last edited by hotrodstingray; Mar 10, 2020 at 09:46 AM. Reason: Pics
Dennis
