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Old Feb 8, 2011 | 07:41 PM
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Hello, I am new to this.
I have a 300 for a 1966 f-100 project. I was wandering if a T-5 or T-56 mustang trany would bolt up to the 300?
 
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Old Feb 8, 2011 | 08:42 PM
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Affirmative, if it's from a V8 Mustang. But you'll also need a new tranny crossmember and shorter driveshaft.
 
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Old Feb 8, 2011 | 08:57 PM
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That is true, but i was also wandering if the bolt holes would line up from the transmission to the 300 block.
 
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Old Feb 9, 2011 | 12:17 AM
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Look here at the WIKI info if it is post '64 6 bolt pattern your good to go. List of Ford bellhousing patterns - Wikipedia, the free encyclopedia






<TABLE class=multicol style="BACKGROUND: none transparent scroll repeat 0% 0%; WIDTH: 100%" cellSpacing=0 cellPadding=0><TBODY><TR><TD vAlign=top align=left width="50%">[edit] Early Windsor V8 pattern
  • 221 V8
  • 260 V8
  • 289 V8 (made before August 3, 1964) - had five bolts holding bellhousing to block
</TD><TD vAlign=top align=left width="50%">[edit] Later Windsor V8 pattern

Note: this is commonly called the Ford Small-block V8 pattern, though it is used in some "big block"-sized V8's as well as some V6's and I6's.
  • 200 I6 1978-1983 only, partial (4 of 6 bolts) pattern.
  • 250 I6
  • 255 V8
  • 289 V8 - (made after August 3, 1964) - had 6 bolts holding bellhousing to block
  • 302 V8 including Boss 302
  • 302 Cleveland (Australia)
  • 351 Cleveland V8 (not the 351 Cleveland M-block engine)
  • 351 Boss
  • 351 Cobra Jet
  • 351 Windsor V8
  • 400 Cleveland M-block V8 aka 400FMX (certain 1973 casting numbers D1AE and D3AE, mated to the FMX transmission)
  • 3.8/3.9/4.2L Canadian Essex 90° V6 (RWD only)
  • 240 I6
  • 300 I6
  • 4.6L Modular V8 (first two casting runs, numbers F1AE and F2VE)
  • 5.0L V8
  • 5.8L V8
</TD></TR></TBODY></TABLE>
You will need an adapter for the t-5 and I think for the t-56 also. I am unsure if they are the same pattern...

Ford 240 6 Cylinder with a 5-speed? - THE H.A.M.B.

Match a clutch with the correct diameter and spline and you should be good to go. You may also have to visit the clutch linkage. There are after market master/slave hydro's that would hook ya up. I think the easiest way to approuch the linkage would be to use a t-5/t-56 bell housing.

Did I forget anything?

HTH
Jim
 
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Old Feb 9, 2011 | 06:33 AM
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The 300 and 302 have the same bell bolt pattern, it is a direct bolt-on with no worries if you plan to use a hydraulic clutch.
 
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Old Feb 9, 2011 | 08:35 AM
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Sweet thanks for the great info.
 
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Old Feb 9, 2011 | 03:06 PM
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T5 input is too long for standard 300 bell. You need an adaptor or the input machined.

These guys have the parts, can help:

Modern Driveline - Classic Mustang Small Block T5 conversion parts kit 1965-1973

I looked into this for my '85, but never moved on it.

OD is pretty tall, so you can run a little lower gear if you'd like, which will make life easier on hills, in town etc.
 
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Old Feb 9, 2011 | 04:29 PM
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Ok I will be running around 2.90 gears in the rear end
 
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Old Feb 9, 2011 | 11:59 PM
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Most T5s would have a .68 5th.

28 inch tires
2.90 gears
60 mph
=
1420 rpm.

Might work if you live in flat country. 3.0s or 3.25s might be better depending on your tires.
 
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Old Feb 10, 2011 | 08:58 AM
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2.90 is an awfully high rear. I'd highly recommend going to the 3.55 rear. With that big overdrive you'll run fine at speed without losing all your acceleration.

What size tire are you running?
 
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Old Feb 10, 2011 | 09:09 AM
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I haven't figured that out. I would really like to run white walls.
 
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Old Feb 10, 2011 | 07:29 PM
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Originally Posted by 85e150six4mtod
Most T5s would have a .68 5th.

28 inch tires
2.90 gears
60 mph
=
1420 rpm.

Might work if you live in flat country. 3.0s or 3.25s might be better depending on your tires.
You're killing me there, grandma!

28" tires
2.90 gears
85 mph
=
2011 rpm

Spot on.

Driving 60 mph on the highway will get you dog cussed pretty good down here in Texas. I don't even shift to OD until she breaks 70.

Seriously though, what sort of project are we talking about? Cruiser? Hot rod?

Work backwards from your desired rpm at cruising speed once you figure out the tires and tranny to select the R&P.
 
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