Ford fe390 352 36 stamped on the blockblock drivers#
The "football cutout" is at about the 4:30 position on the drivers side when the square notch is straight down. Note that the square indexing notch points exactly straight down when the crank is at TDC. The football "clearancing" notch is not needed on the longer strokes, since it is only required to provide drill bit clearance when hollowing the rear crank throw. has only a 3/8" square notch then it is a 1966-later 390 or longer stroke nodular iron casting. has both a 3/8" square "indexing" notch and also an inch-or-so deep football-shaped "clearance" cutout, then it is a 352/360 stroke, or a 1961-65 390-406-427 stroke nodular iron casting. The bellhousing inspection cover will need to be removed to view the features: In case the engine is still in the vehicle, the following is a "quick check" which can approximately identify an FE or FT crankshaft. Sorry, I don't off-hand recall the most common locations. The "-A" indicates a revised bobweight specification, probably due to a piston revision. "2T", "2TA" indicates a 360 crank, 2U, 2UA, or 3U indicates later 390 crank (earlier 390 was cast with taller C3AE-B, etc, markings). Lee 360 and 390 FE pickup truck cranks are typically stamped with 1/4" (or so) tall letters on a crank cheek. Can you guys can give me some help in identifying it? I can't seem to find a casting number anywhere on the crank. The block's bore checks out (4.052 or thereabouts), but the crankshaft I'm not so sure of. Not a bad thing, just something that often gets overlooked.I've just disassembled a project engine that is supposed to be a 390 truck engine that's been rebuilt at least once. I agree, the 0.040" pistons (or possibly the rods) must have been quite a bit different in weight than the originals, requiring the re-balance job.
The 428 (and 410) was externally balanced, but with the 3.98" stroke it is easy to identify the difference. That is a 390 crank and as such is internally balanced. "the stroke measures just under 3.8" - that is all you need to know. I am sure someone will jump my shit and say they have a 390 punched out 0.080", but blocks that can take that are few and far between and don't last long bored to that level without additional support such as hard block, hence the need for a sonic check. Please get some one to sonic check it and see exactly were the wall thicknesses are at if another bore job is needed. 0.050" is typically max on a 390 since the FE motor pioneered thin wall casting techniques and Ford fought core shift problems with the new processes during the FE's entire production run. I would be more concerned about the 0.040" boring job if it is in need of another cleanup. Not a bad thing, just something that often gets overlooked. The long stroke 428 (and 410) was the only externally balanced FE, but with the 3.98" stroke it is easy to identify the difference.
Is it normal to have that much rebalancing? The crank measures stock diameters on the journals.
I read on here that the 390 FE is internally balanced. My question is that I see a lot of welding on the balance holes and cheeks of the crank. Obviously given the over bore the engine has been gotten into sometime in the past. So everything seems to add up matching the VIN that said that it is a 390. The heads are casting C6AER, the block is casting C6ME- and the heads and block are all date coded 5L13 which I see translates into late Nov 1965 castings. The bore measures 0.040 over the 4.05 spec, Pistons are stamped 040, the stroke measures just under 3.8" and the crank is stamped 2U which I have read means a stock 390 crank. I have been reading all I can find on here about FE's and I think I have most of it figured out. I have a '55 F100 that I was thinking of putting it into. I have a 390 FE out of a '66 Thunderbird that I am tearing down to see what condition it is in.
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