[acmemopars]

I won't bore you with all the details except act I'm now on my 3rd attempt to find the correct pilot bushing for my new drivetrain.

Car: 67 Fastback
Engine: 302 (1980 Block)
Tranny: 4-Speed Toploader (C4ZR-7A040)

1.) The first pilot bushing ordered at Orielly was too big to fit in the back of the crank but fit over the 4-Speed output shaft.

2.) The 2nd pilot bushing ordered by my local Orielly (guaranteed to work and tested this morning) fit in the back of the crank but was too small to fit around the Tranny output shaft.
--> This pilot bushing was 1 3/8" outer diameter and 5/8" inner diameter.

Question: What should the inner diameter be for this 4-speed Toploader (should be larger than 5/8"):nerd:

The guy at Orielly should have (Or I should have !) measured the inner diameter with calipers before returning it...now I do not know the inner diameter that originally worked ?

The the bushing I need should have outer diameter of 1 3/8" and an inner diameter larger than 5/8"

Any help would be greatly appreciated.

Mike

 

[kml1966]

I used this one, it fit perfect …. 1966 toploader

Non magnetic too...….

good luck

https://www.summitracing.com/parts/ram-bu50j

 

[kml1966]

She did require a couple light taps w/ a rubber mallet to persuade her into place.... ( crank was from a 70 Torino / 302 )

 

[russosborne]

I must be missing something.
Measure the input shaft on the trans.
Measure the opening in the crank.
Use those measurements to find the correct bushing.

The kicker here might be that you have a newer crank that never came with a Toploader, so finding a simple part number in a catalog/computer for this combination might not be possible. I am thinking that the 80 crank was machined for a smaller trans input shaft that was being used at the time.

Take those measurements, find a friendly parts person, and start searching. Take a micrometer with you. Or take attempt number 2 from above to a machine shop and have the bore machined out to fit the toploader.

The more drastic fix would be to either have the crank opening machined to the Toploader spec, or the Toploader shaft machined to the 1980 spec. Not recommending either, but depends on how desperate you get.

Or, I could be completely wrong.

Russ

 

[C6ZZGT]

Or just machine the opening on the one that fits the crank !

 

[GypsyR]

I'm not sure what OReilly's has but Summit has a McLeod pilot bushing that I believe is what you need. Measurements of such being in line with use of calipers and micrometers by being in decimal rather than fractions.
Part #8-1380-2
https://www.summitracing.com/parts/mcl-8-1380-2/overview/make/ford

Oreilly's or any other parts store should have the equivalent in stock if they can figure it out.

 

[22GT]

I won't bore you with all the details except act I'm now on my 3rd attempt to find the correct pilot bushing for my new drivetrain.

We're missing something. All 65-73 260/289/302/351 used the same pilot bushing.

 

[awhtx]

The very common pilot bushing for a Ford is 1.375" OD X .672" ID. The pilot on the transmission input shaft measures .667" which doesn't convert to a common fraction. It's somewhere between 5/8" and 11/16".

 

[Woodchuck]

Any chance your TL has a big-block input shaft?

 

[russosborne]

We're missing something. All 65-73 260/289/302/351 used the same pilot bushing.

Yes, you are.
He stated he is using a 1980 302.
Russ

 

[2nd 66]

We're missing something. All 65-73 260/289/302/351 used the same pilot bushing.

Yes

Any chance your TL has a big-block input shaft?

Was going to be my question

Yes, you are.
He stated he is using a 1980 302.
Russ

should not matter ,I have a Gt40P and it has the same pilot (I'm using a bearing but :shrug as my 289 did

 

[GT289]

Yes, you are.
He stated he is using a 1980 302.
Russ

It's the same pilot bushing dimension. (The Big Block trans...the one with
the shorter input shaft... ALSO uses the same pilot ID and OD, but the
bushing is specially designed to provide support because the input
shaft is shorter)

Standard SBF pilot dimensions are 0.672 ID and 1.3780 OD, which
matches 6003Z bearing dimensions, which is the one I used.
C2OZ-7600-A was the original bushing, back in the day and
at JBA we frequently used a regular 5.0 roller bearing because
those conveniently fit the 289/302 cranks and either SROD, T5
or Toploaders. (D8TZ-7600-A without the lip on the bearing or
F6ZZ-7600-A with the lip)
The bearings generally are more forgiving then the bushings
when trying to line up the trans and slide it into place.... that has
been my experience.

 

[GypsyR]

I shop at Oreilly's too.
"Hiya Mike. Mind handing me those boxes I ordered online. Here's the money, thanks, seeya."

 

[Hemikiller]

back in the day and
at JBA we frequently used a regular 5.0 roller bearing because
those conveniently fit the 289/302 cranks and either SROD, T5
or Toploaders. (D8TZ-7600-A without the lip on the bearing or
F6ZZ-7600-A with the lip)

Same here, never used a pilot bushing, always used the late-model pilot bearing. Makes a toploader shift a bit nicer.

https://www.rockauto.com/en/moreinfo.php?pk=2472700&cc=1133840&jsn=601

 

[jfstang]

Didn't I read somewhere that if using a bearing for a pilot bushing, good luck trying to remove it years later if it screws up or seizes?

 

[GT289]

Didn't I read somewhere that if using a bearing for a pilot bushing, good luck trying to remove it years later if it screws up or seizes?

Usually they come right out. I removed the 5.0 unit that was in my '66
in 2017..... it had been installed since 1990 or so. Maybe took me 10 minutes
with a Dremel. With a slide hammer and the correct tool, it would have taken
30 seconds.