Look for the smaller, deep drilled hole in the center... it looks like this:
DD
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| are all automatic /6 engines able to be used on manual trans https://www.slantsix.org/forum/viewtopic.php?t=38179 |
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| Author: | gdbuick [ Wed Dec 02, 2009 7:32 am ] |
| Post subject: | are all automatic /6 engines able to be used on manual trans |
I have a chance to get a 74 dart 225 /6 with the super six package from an auto trans car. Will a pilot bushing fit this engine so I can install in my 87 d150 pickup which currently has a 225 /6 with a manual transmission A-833? Not sure what to look for. Thanks |
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| Author: | Doc [ Wed Dec 02, 2009 8:38 am ] |
| Post subject: | |
Look for the smaller, deep drilled hole in the center... it looks like this: DD
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| Author: | gdbuick [ Wed Dec 02, 2009 9:23 am ] |
| Post subject: | |
Okay, that picture appears to be a manual crank with the bronze pilot bushing installed and that deep hole in the center is for the manual transmission input shaft? So if that's correct the very center of the crank may or may not be drilled out on an automatic /6 engine? Thank you for the help and picture... |
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| Author: | Doc [ Wed Dec 02, 2009 9:31 am ] |
| Post subject: | |
The usual problem is that the crank is drilled but not "reamed" to the final size of surface finish. Last time I checked, NAPA listed a "special" undersize OD pilot bushing to address this problem. FYI, I have seen a few cranks where the center hole was not drilled... most were cranks from early production engines. (60 & 61) DD |
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| Author: | gdbuick [ Wed Dec 02, 2009 9:44 am ] |
| Post subject: | |
Oh so the problem is in inserting the pilot bushing, hence the undersize bushing option. I thought when viewing your picture the problem was when looking straight thru the pilot bushing there is a smoothed curved out area (shiny spot in photo) in the center of the crank that might not have been done on some cranks. I think I get it now. |
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| Author: | bigslant6fan [ Wed Dec 02, 2009 11:48 pm ] |
| Post subject: | |
1974 engines didn't come with "super 6"2bbl carbs unless someone put it on.most pre'76 year steel crank engines had the pilot bushing installed even if it was an automatic trans car.Measure the crank,if the pilot measures 0.940 you should be able to install a pilot bushing.but check the model year of engine first-something doesn't add up.Post '76 engines could have the super 6 option,but might not be machined for the manual trans bushing. |
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| Author: | Joshie225 [ Thu Dec 03, 2009 12:31 am ] |
| Post subject: | |
The large diameter recess supports the torque converter nose. The small hole is for the manual transmission pilot bushing. As was mentioned most all cranks are drilled, but not all are finished (by reaming) to the proper size. You can get a roller pilot bearing for a '96 Dakota with a 3.9 that fits the large hole, but you may have to hit a Dodge dealer to make sure it comes with the adapter bushing. |
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| Author: | gdbuick [ Thu Dec 03, 2009 3:13 am ] |
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The owner added the super 6 option to the 74 motor. Thanks for the other comments and measurements. Sounds like I need to checkout the motor to learn more or have the owner send me picture of crank or check to see if it already has a pilot bushing installed. |
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| Author: | radarsonwheels [ Thu Dec 03, 2009 2:15 pm ] |
| Post subject: | I have some experience with these, but on sb cranks |
Like they said, you can get a piece that presses (mallet) into the convertor pocket. Brewers has them for under $20. Dealership should have them for manual trans late model trucks, but the dealership in my neck of the woods treated me like a redheaded stepchild for not having a new hemi truck. You can get a roller bearing style or a bronze bushing style. I think sometimes if the crank is not drilled at all you might have to cut off the nose of the input shaft. (angle grinder cutoff wheel) It is actually really easy to set up. Make sure to dial in your bellhousing while you're in there. Kevin |
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