A. G. Olphart Posted March 18, 2003 Share Posted March 18, 2003 I'm considering a 360 swap for my 240Z, but need to run a solid 4 speed OD automatic. (In GM land both the 700R4 and the 200R4 are said to break under horsepower without massive improvement $$$). Is there a stock mopar 4 sp auto that can handle 4-500 HP long term and that doesn't require computer controls? I've not played Mopar since 904/727 days, so I'm totally clueless on the 4 speeds. As the project is still in the planning stage, I could use all the other obvious answers also... Whose headers fit (model #'s), a motor mount adapter drawing if there is one floating around, proper damper, will the Edelbrock Performer RPM/Holley combo fit under the hood, etc. Thanks- Quote Link to comment Share on other sites More sharing options...
Guest John Adkins Posted March 20, 2003 Share Posted March 20, 2003 Check this thread out: http://www.hybridz.org/phpBB2/viewtopic.php?t=16919 There is also an adapter plate that will allow the use of GM automatics on mopar small blocks, I'll have to dig up more info later Quote Link to comment Share on other sites More sharing options...
A. G. Olphart Posted March 24, 2003 Author Share Posted March 24, 2003 Thanks for the feedback John. I was hoping there might be a Mopar tranny expert hanging around (or passing through). I guess I need to research the four speed automatics to learn of their torque capacity, how to make them shift etc. So far I know that 1990 and later vans run the 518 (727 derivative) but I don't know if it is computer controlled or hydraulic like the 727. Guess I keep looking. Quote Link to comment Share on other sites More sharing options...
Guest Pyrogen_007 Posted June 13, 2003 Share Posted June 13, 2003 I am not an expert, but because I have some dealings with 4 spd autos from mopar, the 518 and 618 trannys are hydaulic, basically a 904 with OD. Its not until you get to the 42FE family of )trannys that you have the problem of computer control, you can find a nice v8 OD tranny in most Dakotas up until 92 for sure and maybe 96. I know its been a while since you posted but I hope this helps. Quote Link to comment Share on other sites More sharing options...
DAW Posted June 15, 2003 Share Posted June 15, 2003 Check out "Chrysler Performance Upgrades" book by Frank Adkins, he provides all of this info on the A/T swaps, uprades, etc. You're looking for A-518 (based on the A-727 3-spd), it was introduced in 1989, uses hydraulic governor for governor pressure, o/d and lock-up controlled by powertrain control module. Newly designated to 46RH in '92. (47RH is heavier duty version used behind Cummins diesel). 46RE is based closely on A-518/46RH but uses electronic govenor, separate transmission computer, and related wiring. The take-home lesson seems to be to stay away from the 46RE due to the extensive computer wiring. Adkins suggests keeping it simple by using an A-518/46RH trans and wire two simple toggle switches: one for 4th gear shift, and one for lock-up convertor. After driving m/t cars for years, flipping a switch off & on should be no big deal...maybe put the wiper switch on the dash somewhere and use the present switch for the trans switches. The o/d transes are longer and tailhousings bulkier than non-o/d transes. Magnum 5.9 souces won't have enough weights on the torque convertor and will need added to for use on a pre-'93 360 engine. Good luck! DAW Quote Link to comment Share on other sites More sharing options...
A. G. Olphart Posted September 2, 2003 Author Share Posted September 2, 2003 Good info to have on the board- thanks. (And you thought your rply was slow). Quote Link to comment Share on other sites More sharing options...
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