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I'm sure this question has been asked and answered before but I'm a new member so please forgive. I have a 1958 Corvette - the engine casting number is 3756519 which should be correct. the number stamped on the pad under the right head is F07IID. Does this make sense? Thank you!
The casting # is correct for your car. However the D code on the engine pad indicates that it was not originally install in your car. The engine was assembled on July 11. The casting date is on the opposite side of the casting # will provide the year.
Thank you for the quick reply. Can you expand a bit on the D code issue? I'm not sure I understand what you are telling me. The casting opposite says G 8 0 as near as I can read it. The G 8 I'm sure about the 0 is a bit hard to make out.
I think what you are saying is that the casting # indicates it is the correct ?? engine but that it was not the original ? ? I've had the car since 1970. Thanks again
The G80 casting date indicates that the block was cast on July 8th 1960. The F0711D indicates that the engine was assembled on July 11th in the Flint Michigan assembly plant. The D indicates that the engine was originally a 283cu. in./170HP with a powerglide transmission installed in a Chev passenger car, but not a Corvette.
if this car is or was originally Powerglide, not so fast to discount this motor. clean that pad real good and look for a letter after the "D" G, H or J.
sometimes factory added last letter separately
also make absolutely sure of casting date.
vin would help too.
From: Putnam Valley, New York. Amateur Radio Operator K2NS
Casting Date
Take another look at that G80---It might be G88 with a thin cross line in what you think is a zero. It's too much of a coincidence for the casting date and assembly date to be so close and also in the right order. Take some carburetor cleaner or brake cleaner and clean the date well. You might be surprised. It still won't be "matching" number, but you will know what year the block actually is.
The G80 casting date indicates that the block was cast on July 8th 1960. The F0711D indicates that the engine was assembled on July 11th in the Flint Michigan assembly plant. The D indicates that the engine was originally a 283cu. in./170HP with a powerglide transmission installed in a Chev passenger car, but not a Corvette.
I thought the casting date for all corvette motors had a single digit (in this case an 0) for 1960 and all passenger cars had two digits which would be 60. So reguarless of the number on the front pad isn't this a corvette block
I thought the casting date for all corvette motors had a single digit (in this case an 0) for 1960 and all passenger cars had two digits which would be 60. So reguarless of the number on the front pad isn't this a corvette block
Single year digit is for the Flint foundry, double digit is for Tonawanda. Flint made lots of engines for car aside from Corvettes as well as trucks. With very few exceptions no Corvette small blocks were cast in Tonawanda.
Thank you everyone for your help. The Vin is J58S105466 if that helps solve the issue somehow.
The zero in the G80 seems to be filled in. Perhaps a casting issue? I have carefully cleaned the engine pad and there does not appear to be anything following the D in the string there.
Your car was assembled on March 21 1958, +/- a few days. Irrespective of whether the engine casting date is 1958 or 1960, it's too late for a March '58 car.
Thank you everyone for your help. The Vin is J58S105466 if that helps solve the issue somehow.
The zero in the G80 seems to be filled in. Perhaps a casting issue? I have carefully cleaned the engine pad and there does not appear to be anything following the D in the string there.
The fact that the pad is stamped F07IID means that it was definitely built after mid-Jan. 1960. That's when Chevrolet started using a leading zero on single digit months. Your engine is not original.
Code Year CID Vehicle HP RPO Trans Carb Comments
D 56 265 Truck 205 410 Manual 4-Brl
D 58 283 Impala 185 Base Power glide 2-Brl
D 59 283 Impala 185 Base Power glide 2-Brl
D 60 283 Impala 170 Base Power glide 2-Brl Hyd Cam
D 61 283 Impala 170 Base Power glide 2-Brl Hyd Cam
D 62 283 Impala 170 Base Power glide 2-Brl Hyd Cam
D 63 283 Impala 195 Base Power glide 2-Brl Hyd Cam
D 64 283 Impala 195 Base Power glide 2-Brl Hyd Cam