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Anonymous
Guest
Hi, can anyone tell me if a 72 or even a 76 200 is the same as far as dimensions, bolt holes, and other critical factors as a 66 200? Thanks.
Basically, they are the same and backwards interchangeable thru the years. What ford did over the years was to add various mounting points for ancilliary things like PS, AC, and alternators. A later block will have mounting bosses not seen on earlier ones.
What that means is that for the most part the newer blocks can go into older cars pretty easily, but an older engine may not work in a newer car because it lacks mounitng bosses for things.
What that means is that for the most part the newer blocks can go into older cars pretty easily, but an older engine may not work in a newer car because it lacks mounitng bosses for things.
80Stang
Well-known member
Some differences in oil dip stick location; later models may have the dipstick placed at the rear of the engine, as the earliers has it pretty close to the distrubutor. Later block has the front dipstick hole also and it is plugged, but an earlier block naturally don't have the rear hole at all. There is no boss to drill it into.
This info comes from my project of swapping a '68 200 block into a '80 fox. Fox has the oil pan at the rear due to crossmember clearance, that's why the dipstick is at the rear. The '68 block lacks metal at the steering pump bracket and has one necessary hole related to that area but the hole lacks the thread; it had to be tapped 5/16" UNC. Also there is one boss in both the blocks below the fuel pump at the edge of the oil pan. The '68 lacks the hole in it, while the '80 has a threaded hole there, but I don't know if it is used anyway.
In this case the bellhousing pattern with the two was identical, but I have learned that it is not always so.
This info comes from my project of swapping a '68 200 block into a '80 fox. Fox has the oil pan at the rear due to crossmember clearance, that's why the dipstick is at the rear. The '68 block lacks metal at the steering pump bracket and has one necessary hole related to that area but the hole lacks the thread; it had to be tapped 5/16" UNC. Also there is one boss in both the blocks below the fuel pump at the edge of the oil pan. The '68 lacks the hole in it, while the '80 has a threaded hole there, but I don't know if it is used anyway.
In this case the bellhousing pattern with the two was identical, but I have learned that it is not always so.
Same with our sixes. Centre percussion mounts (3-bolters per side) came in in the late 60's, and early Ford I6 200's missed out on extra bolt holes. I've found that you can just add a 6 mm (1/4") steel plate, and this makes them the same width as our later 200/250 engines, plus you can fit a nut or drilling to hold the three bolt engine mounts. All our sixes had the same bellhousing bolt spacings for the 27 years after 1966.
Aussie cars had rear mount sumps in Cortinas which were similar to the Fox body cars. They also had different suspension and engine mounting details, so when you order headers for them, you get lots of questions.
We have to drill out the rear dipstick hole too. Early sixes to 1972 never had these holes, and any drilling goes through one of the engine numbers stampled on the back. The rear mount boss apeared in 1972, and stayed untill 1993.
Some versions have the big crankcase vent if its pre-clean air act (1968).
Aussie cars had rear mount sumps in Cortinas which were similar to the Fox body cars. They also had different suspension and engine mounting details, so when you order headers for them, you get lots of questions.
We have to drill out the rear dipstick hole too. Early sixes to 1972 never had these holes, and any drilling goes through one of the engine numbers stampled on the back. The rear mount boss apeared in 1972, and stayed untill 1993.
Some versions have the big crankcase vent if its pre-clean air act (1968).
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Anonymous
Guest
Thanks for all the info guys. So basically, a 72 should have all the required holes and locations as the 66? Or should I just keep trying to hunt down a 66. Thanks again.
72 will work fine in a 66 application.
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