C4 faster shift
- Thread starter werner
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That I couldn't tell you. But I'm pretty sure that in '88 the only transmissions offered in the trucks were the AOD's and the C6's. I could be wrong, but I've just never seen one in an '88
ratio411
Founding Member
Don't forget to get a new adjustable modulator, and upgrade the servo.
A shift kit is nice, but proper adjustment can go a long way.
Make sure the bands are adjusted too.
They can become out of spec over time.
A shift kit is nice, but proper adjustment can go a long way.
Make sure the bands are adjusted too.
They can become out of spec over time.
ratio411
Founding Member
Just look at the pan.
The C4 has a small squared off pan with roughly 12-14 bolts, while the C6 has a large pan with more than 4 straight sides and closer to 20 bolts.
Also, the C6 has a non-removeable bellhousing, while the C4 tranny is seperate from the bell (it unbolts).
If you have an 88 with a C4, it was not stock. I am not even sure a C6 was available in 88. Once the AOD came out, the C4 was gone pretty quick, then when the E40D came out, the C6 went away. I am pretty sure the E40D was out by 88.
The C4 has a small squared off pan with roughly 12-14 bolts, while the C6 has a large pan with more than 4 straight sides and closer to 20 bolts.
Also, the C6 has a non-removeable bellhousing, while the C4 tranny is seperate from the bell (it unbolts).
If you have an 88 with a C4, it was not stock. I am not even sure a C6 was available in 88. Once the AOD came out, the C4 was gone pretty quick, then when the E40D came out, the C6 went away. I am pretty sure the E40D was out by 88.
ratio411
Founding Member
Every C4 I have ever had looked like what that chart calls a "C5". (And I have owned ALOT of C4s)
Even the original 1968 C4 in my Ranchero, and there was no such thing as a C5 in 1968.
Every C4 I have ever had looked like what that chart calls a "C5".
Yeah I think this chart may be a little messed up. Because I thought the only difference with the C4 and C5 was internals (something with the planetaries?) and the dipstick tube set up. I'm sadly not as knowledgeable as I would like to be on these old Ford's. I know more about old GM transmissions than Ford's and I'm a Ford guy!
ratio411
Founding Member
Yeah, I noticed the rest were correct.
If memory serves, it's been a very long time since I have seen a chart like this (they used to hang on the wall at mom and pop parts stores), the first pan is actually a C3, and the second a C4/C5. I could be wrong though. Getting old sux.
If memory serves, it's been a very long time since I have seen a chart like this (they used to hang on the wall at mom and pop parts stores), the first pan is actually a C3, and the second a C4/C5. I could be wrong though. Getting old sux.
You could be correct! C4's and C5's were a "little" before my time. You're probably old enough to be my dad. Not saying you're OLD, it's just that I'm that youngYeah, I noticed the rest were correct.
If memory serves, it's been a very long time since I have seen a chart like this (they used to hang on the wall at mom and pop parts stores), the first pan is actually a C3, and the second a C4/C5. I could be wrong though. Getting old sux.
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