Re: Overdrive trans change over
[Re: cudaman1969]
#3051225
06/17/22 11:02 AM
06/17/22 11:02 AM
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Joined: Nov 2003
Posts: 10,228 Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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Two trucks 79 and 88 both had regular trans, I’m planning to install the overdrive 518 in both and wondering if the trans mount can adapt to the overdrive? With some fabrication you can make it work. IIRC, I made an "adapter" steel plate to attach the three bolt pattern OD to the two bolt pattern non OD pattern in 1991. Couldn't find a newer truck in the JY at the time. Not too much trouble. Driveline angle is the hard part. For that I had to cut, fabricate reinforcements and lower the center portion of the crossmember. Find an OD crossmember and save a lot of trouble.
'68 Fury Convertible '69 300 Convertible '15 Durango 5.7 Hemi '16 300 S Hemi
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Re: Overdrive trans change over
[Re: 3hundred]
#3051254
06/17/22 12:19 PM
06/17/22 12:19 PM
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Joined: Jan 2004
Posts: 8,307 fredericksburg,va
cudaman1969
OP
master
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OP
master
Joined: Jan 2004
Posts: 8,307
fredericksburg,va
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Two trucks 79 and 88 both had regular trans, I’m planning to install the overdrive 518 in both and wondering if the trans mount can adapt to the overdrive? With some fabrication you can make it work. IIRC, I made an "adapter" steel plate to attach the three bolt pattern OD to the two bolt pattern non OD pattern in 1991. Couldn't find a newer truck in the JY at the time. Not too much trouble. Driveline angle is the hard part. For that I had to cut, fabricate reinforcements and lower the center portion of the crossmember. Find an OD crossmember and save a lot of trouble. A bolt in thing?
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Re: Overdrive trans change over
[Re: cudaman1969]
#3051268
06/17/22 01:04 PM
06/17/22 01:04 PM
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Joined: Nov 2003
Posts: 10,228 Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
|
Two trucks 79 and 88 both had regular trans, I’m planning to install the overdrive 518 in both and wondering if the trans mount can adapt to the overdrive? With some fabrication you can make it work. IIRC, I made an "adapter" steel plate to attach the three bolt pattern OD to the two bolt pattern non OD pattern in 1991. Couldn't find a newer truck in the JY at the time. Not too much trouble. Driveline angle is the hard part. For that I had to cut, fabricate reinforcements and lower the center portion of the crossmember. Find an OD crossmember and save a lot of trouble. A bolt in thing? IIRC, we welded it to the existing mount, thinking we had bolt clearance issues. I remember we smoked the rubber mount, might want to start with a poly mount? The "adapter" plate matched the 3 bolt pattern of the OD trans. We should have added an offset bend, there's also an elevation change between the 2 bolts and single bolt. We used washers to make up the difference, not the best but it worked. edit: oh the crossmember? Yeah, I think so. I finally sourced one but never got around to installing it before I sold the truck. There's a LOT of different part numbers, I think they're all interchangeable. You may have to drill new holes in the frame, the OD is 6 15/16" longer than the non OD. We used the welding on of the adapter plate to make up the difference.
Last edited by 3hundred; 06/17/22 01:07 PM.
'68 Fury Convertible '69 300 Convertible '15 Durango 5.7 Hemi '16 300 S Hemi
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Re: Overdrive trans change over
[Re: cudaman1969]
#3051316
06/17/22 03:52 PM
06/17/22 03:52 PM
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Joined: Dec 2009
Posts: 20,647 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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crossmemberadapter platemountThis worked for my NV4500 swap. I didn't need the adapter plate as the mount bolted directly to the trans.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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