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4.25 Top fuel crank to 727 transmission #2678475
07/17/19 10:38 PM
07/17/19 10:38 PM
Joined: Oct 2004
Posts: 5,617
long island NY
A
Ari440 Offline OP
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Ari440  Offline OP
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Joined: Oct 2004
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long island NY
Hello

I have a 511B1 motor

It has a Keith Black top fuel crank 4.25

I'm looking for ideas or if you guys did this how do I use my 727 Tourque flight to work together

Meziere sells a flywheel to use on a billet crank

Any one use this or any other ideas I can go about this problem

Thank you Ari


1.39 9.85 - 137 mph
Re: 4.25 Top fuel crank to 727 transmission [Re: Ari440] #2678482
07/17/19 11:14 PM
07/17/19 11:14 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Kieth Black shop use to sell a press in steel adapter for your needs, not sure if they still do or not. You can try calling them at 562-869-1518 to see if they still offer them or not I bought 6 of them back a long time ago for $25.00 each plus the shipping.
I've used them in the past but now with the new stroker crankshafts being readily available and reasonably price for new ones I don't buy any of the used Top Fuel cranks any more shruggy

Last edited by Cab_Burge; 07/17/19 11:15 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 4.25 Top fuel crank to 727 transmission [Re: Cab_Burge] #2678509
07/18/19 12:18 AM
07/18/19 12:18 AM
Joined: Nov 2003
Posts: 1,874
Pittsburgh,PA
RTSrunner Offline
top fuel
RTSrunner  Offline
top fuel

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Pittsburgh,PA
What is the issue with the TF crank,no register for the toque converter?

Re: 4.25 Top fuel crank to 727 transmission [Re: RTSrunner] #2678523
07/18/19 03:16 AM
07/18/19 03:16 AM
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Bend,OR USA
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Originally Posted by RTSrunner
What is the issue with the TF crank,no register for the toque converter?

Correct, most of the old Nitro racers had the early 392 type hemi motors a long time ago that had the flywheels fit around the outside of the crankshaft flanges with no provisions for a converter register on the back of them like the new stock wedges and hemi motors made after 1962. They would have crankshafts made for the early type flywheels and clutches instead of buying new ones, some racers are still doing that shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 4.25 Top fuel crank to 727 transmission [Re: Ari440] #2678793
07/18/19 06:30 PM
07/18/19 06:30 PM
Joined: Dec 2006
Posts: 2,094
Byron, NY
W.I.N. Racing Offline
top fuel
W.I.N. Racing  Offline
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Byron, NY
I made one of these up, both an alignment ring and distance adapter. It pilots the flywheel and TC and registers in the crank CO' bore

525 Hemi crank 001.jpg525 Hemi crank 005.jpg
Last edited by W.I.N. racing; 07/18/19 06:31 PM.

'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
Re: 4.25 Top fuel crank to 727 transmission [Re: W.I.N. Racing] #2678834
07/18/19 07:47 PM
07/18/19 07:47 PM
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Posts: 5,617
long island NY
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Ari440 Offline OP
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J@W makes a flywheel and adapter

Meziere sells one too

130 teeth gm style flywheel

You can use a stock mini starter

It's the converter that we will see when we get there !


1.39 9.85 - 137 mph
Re: 4.25 Top fuel crank to 727 transmission [Re: W.I.N. Racing] #2678870
07/18/19 09:35 PM
07/18/19 09:35 PM
Joined: Oct 2004
Posts: 5,617
long island NY
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Ari440 Offline OP
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Originally Posted by W.I.N. racing
I made one of these up, both an alignment ring and distance adapter. It pilots the flywheel and TC and registers in the crank CO' bore






Any more pics of your setup

Converter is like a gm style ?


1.39 9.85 - 137 mph
Re: 4.25 Top fuel crank to 727 transmission [Re: Ari440] #2678920
07/19/19 12:29 AM
07/19/19 12:29 AM
Joined: Sep 2009
Posts: 1,805
ky hills
thehemikid Offline
top fuel
thehemikid  Offline
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ky hills
I had another one made basing it off the one that came with a crank,when it
needed a tighter ID, and a little more converter nose engagement for a 1/4" mid plate,...after talking to PTC.
I don't remember the final dimensions though.
Doesn't have to have a beveled shoulder,...could be squared. Just went with the bevel to be able to pry it out easier
Watch your bevel angle tho,...to make sure you have enough to register the flex plate.

IMG_3515.JPGIMG_3535.JPG
Re: 4.25 Top fuel crank to 727 transmission [Re: thehemikid] #2679007
07/19/19 09:53 AM
07/19/19 09:53 AM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
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Great Neck,LI,new york
I went down that road over 20 years ago with a 4.5 arm that had the radial cracks.

ShortBlock Crank Flange1.jpg
Last edited by hemi-itis; 07/19/19 09:55 AM.

HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: 4.25 Top fuel crank to 727 transmission [Re: Ari440] #2679401
07/20/19 12:05 PM
07/20/19 12:05 PM
Joined: Dec 2006
Posts: 2,094
Byron, NY
W.I.N. Racing Offline
top fuel
W.I.N. Racing  Offline
top fuel

Joined: Dec 2006
Posts: 2,094
Byron, NY
Yes converters are GM style. I moved the started the right side so there would be less clutter on the left side. it is a GM flex plate with a 8 bolt mount and 6 bolt converter pattern. Used a minnie starter as a mock up starter and then replaced it with a better aftermarket version. Also had to change the pinion gear to a GM tooth count. The full diameter adapter between the crank and flex plate makes up for the .500" thick mid plate so no spacers are needed between the flex plate and converter

525 Hemi crank 016.jpg525 Hemi crank 007.jpgIMG_0978.JPG
Last edited by W.I.N. racing; 07/21/19 12:59 PM.

'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd






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