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Shaggy
07-09-2004, 12:26 AM
Ford Transmission Bellhousing Bolt Patterns

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5 bolt bellhousing
"90 Degree V8" (Windsor V8)
221
260
289 through 1965

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6 bolt bellhousing

This pattern was first used on the 1966 289 CID V8

"90 Degree V8" (Windsor V8)
289, 1966 and later
302 all
351 Windsor (351W) (16 intake manifold bolts) 1968-1975
351 Windsor (351K) (12 intake manifold bolts) 1976-1998
255/4.2
5.0, 5.8L

"335 Series" (Cleveland)
BOSS 302
351 Cleveland 4V
351 Cleveland 2V
BOSS 351
351 HO
351 Cobra Jet
400 (some rare 1971 blocks)


"Big Six" (large 1960s cars, light trucks through '98)
240
300/4.9L

"Small Six"
200
250

Somewhere in the late '60s, at least some of the small sixes
came with the 6-bolt Windsor bellhousing bolt pattern.

"90 Degree V6" (RWD - FWD bolt pattern is different)
3.8L
4.2L

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"Modular V8"
4.6
5.4

"Modular V10"

This pattern is very similar to the Windsor pattern; enough bolt holes
line up to make it possible to interchange without too much work

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"335 Series" (Cleveland)
400 (all except some 1971 models)
351M (variously called Modified or Midland)

"385 Series"
370 (heavy trucks)
429
460
514 (SVO crate motor)
600 (SVO crate motor)


"?"
7.2 Diesel


These are three entirely different series of motors, but they share the
same bellhousing to block bolt patterns.

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"FE" (Ford-Edsel) V8
332
352
360
361
390
391
406
410
427
428

These have their own unique bellhousing pattern. The input shaft is
a little shorter than the 302; you need an extended pilot bearing to use
a 302 transmission.

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"Y block" V8
232
252
272
292
312

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Ford Flathead V8
integral bellhousing

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Ford Flathead V8
separate bellhousing

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Cologne V6
2000 (Europe)
2300 (Europe)
2600
2800
2.9 (light trucks)
4.0 (light trucks) (also Mazda B4000)

Cologne V4
(European Fords, SAAB V4, Ford industrial V4)

The German 2600 and 2800 V6s (Capri, Pinto) share the same bolt
pattern, which is similar to, but not the same as, the Pinto four.

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"Pinto" small 4 (EAO)
1300 (Europe)
1600 (Europe)
2000

"Pinto" big 4
2000 (light trucks)
2300

The 2000cc German Pinto four and the 2000/2300cc Brazilian Pinto/Ranger four
have the same bellhousing bolt pattern, but you have to use stepped
dowels to line them up since the dowel holes are different. There were
also 1300cc and 1600cc European versions, and a Cosworth twin cam. Note
this is the OHC motor, *not* the "Kent". Ford SVO calls it the "EAO"
nowadays. This is also the same short block used for the 4cyl British
model Cosworth Sierra Turbo.

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Kent 4
1300 (Europe)
1600

The English Ford "Kent" pushrod engine was available in 1100, 1300,
1500, 1600, and 2000cc versions, also including a Cosworth twin cam.
This engine was used in some early Pintos and Capris, the Cortina, and
the Fiesta. It was also the basis for many of the Cosworth
aluminum-block racing engines as well as being the standard Formula Ford
motor, and practically every racing transmission builder has a special
bellhousing or adapter for this engine.

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"Small Six"
144
170
200 (early)
250 (early)

These have their own bellhousing to block bolt pattern. Some versions
had different input shaft lengths than the various V8s.

The 144-170-200-250 six had its own unique bolt pattern, except some
later 200s and 250s came with the same bolt pattern as the above. Those
blocks are preferable if you're going to try swapping stuff around.

I'm not sure which bolt pattern is used by the Australian sixes, but
the heads interchange with the 144-250 family.

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unknown
Ranger 3.0 RWD
Taurus 3.0 FWD

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