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Hello, I’m sure this has been posted a thousand times but I’m looking to ID my block. I have a 68 f250 daily and managed to pick up a non runner 67 f250 I’m building out. The frame has been notched and this is not the original motor. The truck had an older tag placed under the mounts that said it was a 429 but I’m leaning more towards a 390. I know it’s not a 360 based off the stroke. I have picked up an FE book and chased the codes all over with no luck. My only major reason on the ID is to decide if I want to build it or throw an LS in. Any help is always appreciated. 8U140578
Your spark plugs are //\\. 429/460 plugs are !!!!. Your exhaust manifolds look like FE car manifolds. The casting number shows C8AE--enginered for a car, not a truck.
You have manifold casting number of C8TE9425A. That engineering number is 1968 Truck engine.
You have a date code of 8B8, which would be 1968, B = Feb, the second month, 8 equals the day--Feb 8, 1968--an engine for the 1968 model year.
You have a block casting of C7ME-A. 1967 Mercury engine engineering department. That number fits 360-390-410, but since it was cast for '68, forget the 410.
So it's probably a 390 2V, possibly from a car. Hard to say what has been changed and what is OEM.
Is the frame notched to allow the exhaust to pass?
Note the slightly different exit for pickup manifolds:
If it's a car 390 2V, it will have slightly dished pistons with valve reliefs, about. 015 down the hole. Nominal CR 9.5. A car 4bbl motor would be the same but no dish and nominal CR 10.5. A pickup 360 or 390 will have pistons .100 to .120 down the hole.
The stamped number in the first picture is a partial VIN from the original vehicle the engine was installed in. If the C6 was also from that vehicle it should have the same number stamped on the top near the where the tail shaft housing bolts on.
The stamped number in the first picture is a partial VIN from the original vehicle the engine was installed in. If the C6 was also from that vehicle it should have the same number stamped on the top near the where the tail shaft housing bolts on.
good call, I went and took a look. It does have the same vin.
On that transmission there should be a tag on the servo cover. That tag can help identify which engine and vehicle combination the transmission was built for, if you have a shop manual, "chassis section" for the year car it came from. The tag will have a date code and plant code plus a series of letters like PGB-AC-1, which would have been for a 390-2V in a 1969 truck.
On that transmission there should be a tag on the servo cover. That tag can help identify which engine and vehicle combination the transmission was built for, if you have a shop manual, "chassis section" for the year car it came from. The tag will have a date code and plant code plus a series of letters like PGB-AC-1, which would have been for a 390-2V in a 1969 truck.
Thanks for the info. I ordered a book today and will see what I can come up with. This is the only other number on the trans besides the vin. The vin is the same as the engine so that’s a plus.
Does the shift arm point up or down on the transmission? As OEM, up is car, down is truck. It's fairly easy to change but then so are exhaust manifolds.
Does the shift arm point up or down on the transmission? As OEM, up is car, down is truck. It's fairly easy to change but then so are exhaust manifolds.
It was already a running driving truck with this engine/transmission but I’m 99.9% sure it was from a car based off the cast code someone else pointed out.
Your spark plugs are //\\. 429/460 plugs are !!!!. Your exhaust manifolds look like FE car manifolds. The casting number shows C8AE--enginered for a car, not a truck.
You have manifold casting number of C8TE9425A. That engineering number is 1968 Truck engine.
You have a date code of 8B8, which would be 1968, B = Feb, the second month, 8 equals the day--Feb 8, 1968--an engine for the 1968 model year.
You have a block casting of C7ME-A. 1967 Mercury engine engineering department. That number fits 360-390-410, but since it was cast for '68, forget the 410.
So it's probably a 390 2V, possibly from a car. Hard to say what has been changed and what is OEM.
Is the frame notched to allow the exhaust to pass?
Note the slightly different exit for pickup manifolds:
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