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By MoonShadow - 16 Years Ago
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Do the Cruise O Matics have a different bolt pattern than the Ford O's? I have a later style Y-Block flex plate that will not mate up to a Ford O converter. How about the aluminum case true 2 speed Ford O's? Any Ideas? Chuck in NH
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By Hoosier Hurricane - 16 Years Ago
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Chuck: Coan once told me there were two bolt patterns used on Ford converters, depending on converter diameter. He told me to just redrill my flywheel if the pattern was wrong. I beg to differ with him on only two bolt patterns. The 2 speed aluminum Fordo has 3 bolts instead of 4, so that's another pattern.
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By MoonShadow - 16 Years Ago
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I sent Frank a flex plate marked 61-62 Y-Block. Crank pattern is correct but his torque converter won't bolt up. First I heard of it but I'm sure they varied over the years. I know some I've seen have two bolt patterns. Thanks, Chuck in NH
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By Hoosier Hurricane - 16 Years Ago
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Chuck: I've been talking to Frank off site. His converter is not COM, it is FMX from a Mustang, he thinks.
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By MoonShadow - 16 Years Ago
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Redrill? That part he didn't tell me! Chuck
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By kevink1955 - 16 Years Ago
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I just found out about the 3 bolt convertor from the alum case 2 speed. I purchased 1 thinking it was a 58 to 62 iron case convertor. When it arrived I found it had 3 tabs that bolt to the flexplate not 4 studs that the FOM COM or FMX would have. I cannot redrill my flex plate as the convertor will not lay flat on the flex plate due to the tabs hitting the curved area close to the ring gear. I think the spline count may be diffrent also. I had totaly forgoten that ford used an alum case 2 speed and thought I had found a bargin!!
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By Rebelliousengineering® - 16 Years Ago
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since were on the topic of torque converters mine is the stock fordomatic i messed up by un-bolting the torque converter off my old engine instead of just the 4 or 5 that you need to unbolt to take it off so my question is , is it okay to just to bolt it back together or is there anything i need to line up also is there a torque spec for each of the bolts?
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By marvh - 16 Years Ago
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Ford used 3 different torque converter bolt circles with ring gear welded on flexplate for cars/light trucks.
Ford Mustang II 9.375in
Ford Small 10.500 in
Ford Large 11.438 in
The yblock cruiseomatic is 11.438 bolt circle same bolt circle as FMX used in full size cars and pan filled C4.
I have never tried to install a FMX converter in a yblock due to the oddball pilot used on the yblocks. The only one that could possibly be used would be from a small block with 1.375 pilot and an adapter. One thing maybe a problem is the small block pilot's stick out farther than the other converters. Another option maybe to take a FE torque converter and have a yblock sized pilot welded in place. FE converters for cruiseomatics are much easier to find.
If Frank is using a FMX from a Mustang likely it will have the short tail shaft. This could be a problem for the u-joint to clear X or K member at rear of transmission. The long tail shafts were used on the full size cars.
marv
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By pegleg - 16 Years Ago
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Rebel, Probably ok, do you have a shop manual? That should have the torque numbers. Re: Chuck's Flex plate. The one he has has a 12 1/2" bolt circle. Which is huge! It does bolt to the back of my 292 crank, so it's definitely a Y part. The thing is also about a 1/2 " bigger in diameter than the Std Flywheel. Has 148 teeth on the ring gear, instead of 146. That makes sense since it's a larger diameter. But, as mentioned in another reply here, there's no way an 11 1/2 inch pattern could be drilled in it, the area where the converter sits is too narrow to allow that much change. Needless to say, I'm slightly confused now. I am working with an FMX which appears to be a '72 Mustang small block unit.
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By pegleg - 16 Years Ago
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Ford Mustang II 9.375in
Ford Small 10.500 in
Ford Large 11.438 in
I have never tried to install a FMX converter in a yblock due to the oddball pilot used on the yblocks. The only one that could possibly be used would be from a small block with 1.375 pilot and an adapter. One thing maybe a problem is the small block pilot's stick out farther than the other converters. Another option maybe to take a FE torque converter and have a yblock sized pilot welded in place. FE converters for cruiseomatics are much easier to find.
If Frank is using a FMX from a Mustang likely it will have the short tail shaft. This could be a problem for the u-joint to clear X or K member at rear of transmission. The long tail shafts were used on the full size cars.
marv
[/quote] This one has a fairly long (aluminum) Tail shaft Housing. I don't think the length will be a problem. I'd planned to use a small block converter with an adapter, unless I can convince some body to build one with the Y block pilot.
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By marvh - 16 Years Ago
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148 teeth is correct for a V8 engine, should be about 15" OD.
146 tooth flexplates were used on the 223 6cyl engines,
That 12.5" bolt circle has me confused unless the bolt holes are about 1/4" diameter.
If the FMX transmission is a long tail shaft the aluminum housing will be about 3/16" shorter than the 55 up Fordomatics tail shaft housing. The FMX tail shaft itself will be exactly the same length as the 55 up Fordomatic. The FMX tail shaft sticks out the tail shaft housing just slightly more than the old Fordomatic do.
marv
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By pegleg - 16 Years Ago
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Marv. That 12.5" bolt circle has me confused unless the bolt holes are about 1/4" diameter.
Has me and Chuck confused too. I'm guessing, emphisize guess, that it may be some kind of a HD truck wheel. It is marked as 62 truck, which I took to mean F100 or something. The main problem would be I couldn't drill it for the 11.438 convertor, because it's recessed in the area where the converter would mate.
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By Glen Henderson - 16 Years Ago
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Frank, I answered your PM, I have been up in the Shoals area all week and have not had access to a confuser (ain't paying $10 to us the Marriott's) all week. The part number for a Y Block flywheel is B8A-6375-D, this unit fits 58/62 cars and light trucks. Sounds as if the one you have is for a H/D application. I had plans of visiting the BOSS HOG torque converter plant while I was up there, but the meetings ran late, the weather was bad and I felt like crap all week. I have talked to them in the past about the possiblity of building there FMX converters with a Y Blockl hub, the guy that I talked too did not rule it out, just that the enginners would have to look into it. They never called me back, but not suprising. I have a 58 torque converter and 57 unit that I am going to take up there and have them take a look at it and see if they can come up with something. I just tried my plate on a 72 full sized FMX converter and it fits fine.
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By Hoosier Hurricane - 16 Years Ago
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Glen: They shouldn't have any problem making an FMX converter with a Y snout. I have one in my Ranchero, I just turned a ring that is 1.375 ID and 40mm OD and about 1/2" long, tapped it onto the small block FMX converter snout and bolted it up.
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By pegleg - 16 Years Ago
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Glen, Sounds like a winner. I'll send Chuck his back, now that we know what it is he can probably find a truck guy who needs one. Those big ones must be rare. I'll use a small block convertor for an FMX and go with John's trick. The FMX converter is being made by TCI, Summit racing has them listed and there's also an Alabama Converter, now ACC, making them as well. (E-Bay)
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By MoonShadow - 16 Years Ago
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Frank, Just bring it to Columbus. No sense paying shipping for the return. Chuck
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By Glen Henderson - 16 Years Ago
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ACC is the name of the company in Florence, AL
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