Thread: id a 67 390
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09-10-2003 07:09 AM #1
id a 67 390
Bought a 68 f100 and was told it was a rebuilt 390. C7 on the block tells me it is a 67 engine but not sure what it is or from because the 67 trucks didn't come with a 390 so if it is a 390, what is it from.
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09-14-2003 08:39 PM #2
Does it have the tag on the coil bolt. Ford motors had a tag on the coil bolt that told the year and size but unfortunatly most shade tree mechanics removed them when repairing them. The C7 casting number tells when the block was cast and if it was an early 68 it could have a block that was cast in 67 and it could have the original motor.
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09-15-2003 11:12 PM #3
Contrary to popular belief, you'll find that most your truck engines, espically the '68-72 and some '73s came mostly with the 360, be it the standard engine. Just about all of the '67's were 352's and a few were 390's. I think the 390 made the options list in '68 but was seen more widespread from '69 up especailly in the 3/4T and 1T trucks. tha only way to know FOR SURE which one you have is to ID the crank itself.Dan Ouellette
'25 T C-Cab
'47 Ford Coupe
'53 Ford Crestline
'53 Ford Mainline
-And 8 more Fords and 2 Mopars
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09-16-2003 12:26 AM #4
Bore of 4.00 x 3.50 stroke will be a 352
Bore of 4.05 x 3.50 stroke will be a 360
Bore of 4.05 x 3.78 stroke will be a 390
If they did a .030 overbore on the rebuild you can bump up those numbers to 4.03 and 4.08 respectively.
I have seen 68 half tons with both 352's and 360's from the factory. I guess it depends if it's an early or late production for that year.
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09-22-2003 07:30 AM #5
The block is from a car and no tags so I quess I'll just have to mic it.
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10-04-2003 08:53 PM #6
The C-7 is for the first year that the Cast is used, not the year of build. (It is common for C6ME and C7ME 428 CJ blocks to be in 68 and 69 cars)Check under the oil filter spinner for the date code. This will tell when the engine was built. Your VIN code will tell you if it was originally a 390 Truck"If you can't run with the BIG DOGS stay on the Porch and screw their pooch ! "
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10-04-2003 10:50 PM #7
Hope this helpsObjects in the mirror are losing
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance