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5 bolt 289

  • Thread starter Thread starter santeechris
  • Start date Start date May 18, 2009
S

santeechris

New Member
May 18, 2009
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May 18, 2009
#1
  • May 18, 2009
  • #1
I have an early 5 bolt motor that has been built. I acquired it from a friend and everything in it is top quality. forged pistons, crank, etc. The problem starts because i would like to attach a t56 to this motor. I found a possible solution but am unable to find an reviews on it. The item in question is an adapter plate which bolts to the motor making a 5 bolt engine a 6 bolt. It is found here. Ford 5 bolt 289 engine to small I've considered getting this and maybe welding it to the block. But my bigger concern is it requires using a spacer on the crank to push the flywheel out to the proper depth. Are my concerns justified or is this a viable solution for my problem? many thanks in advance, Chris.
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
May 18, 2009
#2
  • May 18, 2009
  • #2
I think it would be easier to modify the common 6-bolt T5 adapter to attach your trans to the stock 5-bolt bellhousing.
 

woodsnake

15 Year Member
Jan 16, 2007
1,352
15
69
Hicksville, NY
May 18, 2009
#3
  • May 18, 2009
  • #3
Moves the fly wheel, or the input shaft?
That kit looks lretty interesting, I'll be checking it out my self later.
Thanks for posting it!
 
S

santeechris

New Member
May 18, 2009
6
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0
May 19, 2009
#4
  • May 19, 2009
  • #4
The kit uses a plate on the back of the motor. It attaches to the transmission holes on the 5 bolt motor, and provides new holes in the same location as 6 bolt motors. The plate is roughly ¼-½" thick (not entirely sure, but the bolts to attach it to the block are1" long). Since this puts the mounting surface of the transmission back ¼" the flywheel must be moved back as well. The spacer included is similar to a wheel spacer, and goes between the flywheel and crank. All parts are said to be precision machined, im just suprised i have never heard of this kit before and am wondering if its for good reason. The only real reviews i have found are on their kits for cars like model a's and the like, and owners tend to be happy with the kits with the only complaint being the cost of about 700 clams.
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
May 19, 2009
#5
  • May 19, 2009
  • #5
I don't like it.... no sir, I don't like it.

I think you would be better off geting a blow proof bellhousing/scatter shield that will mount both to the block and provide correct input shaft depth for the trans.

Moving everything away from the motor is going to cause other problems. I don't know what year you car is, but you will provably need to modify the trans tunnel to get the T56 to fit in there. Moving the trans back further is going to mean you will likely need to modify the tunnel of the car more then you would have. Also, depending on the type of linkage you are going to use, you may end up too short on your linkage. If you are going hydrolic this wont be a problem.
 
C

Calponycarsmike

New Member
Jan 22, 2009
71
0
0
Southern California
May 19, 2009
#6
  • May 19, 2009
  • #6
You can use a stock 4 speed bell housing and linkage with a adaptor plate with a T5. For the T56 I think you are out of luck.

This company makes a kit for Chevy powered hot rods you may want to give them a look they may be able to help with the conversion. Weir Hot Rod Products

You may also want to contact Lakewood Lakewood :: Welcome!
 
S

santeechris

New Member
May 18, 2009
6
0
0
May 19, 2009
#7
  • May 19, 2009
  • #7
This essentially lets me get an sfi bellhousing on my block. It basically converts my block to a 6 bolt motor, the only difference's in dimensions being the ½" back. With it I'd have the availability to use any bellhousing for a 289. As for room I have plenty. With the heidts MII front end, and no cares as to how much I'll have to modify the tunnel i think I'll be good there. As for a custom bellhousing for my motor that will attach it to the T56 I've yet to get an answer from any of the manufacturers I've contacted, but that would be the optimum choice.
My concerns were more with the extension on the crank, but doing some research i found that it is capable of handling over 1000 horses. (and I'm not there anytime soon with a 289)
 

tos

Founding Member
Apr 27, 2001
896
68
59
Cincinnati Ohio
May 28, 2009
#8
  • May 28, 2009
  • #8
I dont know the pattern on the t56 but Cjponyparts sells the adapter to fit the t5 to your bellhousing. It runs about 140 bucks for the plate.
 
B

bnickel

Founding Member
Aug 21, 2002
5,640
3
77
lubbock, texas
May 28, 2009
#9
  • May 28, 2009
  • #9
i don't see any real problems with using this kit, other than the ones youalready know about, mainly being that you'll have to move the trans back a little farther and you know you're already going to have hack up the tunnel to get the t-56 in there anyway. i say go for it, can't see any reason to think it would be any worse than any of the block adaptors that people have been using since the 50's. a lot of people use block spacers like this in the 4x4 world to adapt chevy/ford/dodge trannies to toyota, isuzu, nissan, jeep and many other engines and they probably put a lot more abuse to them than you ever would with a fairly mild street car
 
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