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Discussion Starter #1
I found a C4 in a 1975 Maverick. According to the VIN, I think it should have a 302 but it has an Inline-6. Not sure if it is 200 or the 250.

Just wondering, is the bell housing the same for 200/250 & a 302 / 5.0L ?

Thanks

Waid
 

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Not 100% sure but I think they are different... Think the 300 6 is the same tho...
 

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Just wondering, is the bell housing the same for 200/250 & a 302 / 5.0L ?
Waid, the 250 - yes. The 200 - no. The 200 had the starter mounted up high on the bell, so you can ID it that way. Just for reference, the following 6-cylinder bellhousings will fit 1965+ small blocks (255, 289, 302, 351W, 351C and early 400):

  • 232 (V6 3.8L)
  • 240 I6
  • 250 I6
  • 300 (I6 4.9L)
While most are for 164-tooth flywheels - not all are. Also, some 232 and 300 C4 bells (any after 1981 are actually C5) are deeper and must use a longer torque converter, originally designed as lockup for cars, and non-lockup (but same OAL) for trucks. As a side-note, many of the HD 300 C4 versions (mostly trucks and vans) are built with V8 guts.

David
 

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Discussion Starter #5
I found another 76 Comet and by the VIN number 6K30L536306, it has a 250 so it's C4 would have same bolt pattern at the 302.

Is the gearing any different & strength of the C4 different between 250 & 302?

Thanks

Waid
 

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waid, the gearing will be the same as far as I know, but the internals are a little "weaker" compared to the v-8 internals.... (if I read the post by david correctly) Ya didnt get v-8 guts unless it was behind the HD 300ci I6.
 

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True. Gearing is the same for all. The number of clutches (and therefore power-holding capacity) changes depending on application. The HD and V8s had the most, and weaker engines had less. For example, a Pinto with a 2.3L 4-cylinder and C4 will only have 2 forward clutch plates, as they found 3 or 4 to engage too harshly even with flow restrictors (and why Pinto valve bodies are specifically 'different').

I6 C4s can be upgraded with swap-in drums or by modifying the I6 drums for more clutches - but with all the C4 cores out there on the local Craigslist for under $50, why bother? On the other hand, if it's in nice shape, you may want to grab it if cheap or free just for the extra parts towards your next build. Lots of little stuff to use for HP building, like extra pressure plates, planetaries, shift lever to mod and stuff. I finally dumped a bunch of parts cores that were picked-over for builds just to make space. BTDT.

David
 
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