Re: 518 to 727 swap?
[Re: TLT]
#2849402
11/21/20 08:13 AM
11/21/20 08:13 AM
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Joined: Dec 2014
Posts: 5,886 ohio
ruderunner
master
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master
Joined: Dec 2014
Posts: 5,886
ohio
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Why get rid of the overdrive?
But, iirc the cross member needs moved forward, the holes are probably there. The mount itself might be different. You will need a longer driveshaft. Linkage swaps 100 percent. Use your existing speedo drive. Cooler lines are same.
Angry white pureblood male
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Re: 518 to 727 swap?
[Re: ruderunner]
#2849498
11/21/20 12:13 PM
11/21/20 12:13 PM
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Joined: Jan 2005
Posts: 4,441 Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,441
Michigan
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I'm wondering why as well. With it being a 1990 it should be a non-lockup model as well. Either control OD with just a toggle switch or automate it with a vacuum and pressure switch. It's damn easy to do.
If your 727 is also a non-lockup model then the converter will swap over.
The TBI blows though and lots of people ditch it for a carb.
1987 Fifth Avenue - 512/518/D60
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Re: 518 to 727 swap?
[Re: TLT]
#2849596
11/21/20 02:53 PM
11/21/20 02:53 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
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I'm wanting to do the opposite of what most people do, I have a 1990 2wd Ramcharger with a TBI 360/518 combo that I'm converting to a 360 carb with a 727, what do I have to do to the transmission crossmember to put a 727 in? Or do I have to get an earlier 727 crossmember? I have the throttle body to carb issues figured out, it's the tranny swap that is giving me problems. I went the other way with my '82, 904 to A500. I fabricated a mount for the A500 (3 bolt vs 2 bolt) and relocated the crossmember. I would have been better off with the correct crossmember. Totally forgot about driveline angles. The elevation needs to change as well. I found that there were different crossmember part numbers by year, even though they seem indistinguishable from each other.
'68 Fury Convertible '69 300 Convertible '15 Durango 5.7 Hemi '16 300 S Hemi
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Re: 518 to 727 swap?
[Re: TLT]
#2850132
11/22/20 08:32 PM
11/22/20 08:32 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
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Thanks guys, we are building a street toy, 1990 2wd Ramcharger, no need for OD on this, have a fresh built 727, new high stall converter as well. Eliminating the computer and TBI, going with a carb on a strong 360. I was just hoping an earlier crossmember from a mid 80's or so pickup would bolt in. I don't remember for certain. I recall I was looking for Ramcharger crossmembers, I can't recall why I wasn't looking into pickups, an obvious connection. I'm thinking I knew something then I've forgotten. Good luck with your swap. If you elect to keep the OD, you can operate it with two toggle switches, which I did, or you can automate it with some pretty simple mods while losing the computer.
'68 Fury Convertible '69 300 Convertible '15 Durango 5.7 Hemi '16 300 S Hemi
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