racerdude5
Well-Known Member
Is there any Chrysler transmissions that have 4 or more gears that can be swapped into an a body without modifying the floor and with minimal modifications to the crossmember?
Chrysler Tranny Swap 4 or more
- Thread starter racerdude5
- Start date
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hemitheus
19? Plymouth Scampenstein
Automatic or manual?
dodge71demon
Well-Known Member
Both
a stock four speed manual set up doesn't need any mods to the floor. unless you count the hump and hole in the floor.
for an automatic, all the factory 4 speed stuff is going to need surgery with a gear vendors setup probably the least intrusive
have fun
for an automatic, all the factory 4 speed stuff is going to need surgery with a gear vendors setup probably the least intrusive
have fun
daliant
Befuddled
Hang a gear vendors OD unit off the back, you can split each gear if you wanted.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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I have the GearVendor. It works best on the 3.09/direct box. Around town I shift 1-2-3-3od-4od; the ratios are 3.09-1.92-1.4-1.09-.78. The splits are; 62%,73%, 78%,71%.Purty nice.
But it gets better; For 1/8 mile, I shift; 1-1od-2. the ratios are 3.09-2.41-1.92.The splits are 78%,80%. SWEET. I run 3.23s out back. Goes 93mph at 7200rpm.Or if Im looking to ET well, I will regear the back to 4.1s and use 4 gears; 1-1od-2-2od. The ratios are 3.09-2.41-1.92-1.50. The split %s are 78/80/78. And 93 is 7100. Oh yeah.
-Now I havent yet run the 1/4. But if I was to, Id regear the back to 4.56s and shift; 1-2-3-3od. The ratios are 3.09-1.92-1.40-1.09. the split %s are 62/73/78. this would get me 115 at 7200.
-Around town I run 3.55s. this gets me a 10.97 starter gear, and a 2.77 cruiser gear.
-To say that this combo is flexible, is an understatement. The unit shifts faster than I can,probably faster than anybody can.Certainly faster than any automatic.
-There are two downsides;
Downside 1) The unit relies on driveshaft rpm to make its oil pressure which it uses to make the shift. If you use the supplied mini controller, this is not an issue.That controller has one important feature. If you connect it as described it will prevent the unit from engaging in reverse.The GV must absolutely not be engaged in reverse.This system was designed to be an overdrive. To that end the controller has a feature I didnt like. It seems to have a waiting period if you select it too early.Thats the first downside.
-That controller is too slow for drag-racing.To overcome this,I hooked the GV directly up to a button on the top of my shift ball.Now it shifts instantly, provided it has oilpressure. You now are the controller.
-If the d/s rpm is too slow when you call for a shift, then the shifts get mushy, and theres nothing you can do about it. Furthermore head-office was not forthcoming about that at time of sale.This is not a problem with the 3.55s and the 3.09box. This gets you 22mph at 3000 rpm, which I suggest to be the minimum spd to split. But why bother, I just use 2nd. With 3.23s the ds rpm comes up pretty slow, so I have a higher minimum road speed.
-At 4000 plus rpm with 3.55s theres plenty of oil pressure to perform a neck snapping shift. So under Wot, over 4000, its never an issue. Now here it comes;
-Downside 2); Are you going to remember to be sure the unit is not engaged in reverse? Thats a lesson that cost me a lot of money. To prevent this I installed a light on my dash to indicate engagement. And I religiously check it every time I grab reverse. Really I should rig a relay to the reverse light sw. but I havent yet.
-There are other things; GV will not sell you any tools or parts or extra adapters for it . If you want to put it onto something else, you must return the current adapter in exchange for another. It requires a special, expensive oil.I think it weighs 23 pounds.Thankfully the weight is in a great place.You can purchase it as a stand alone unit.That would require 2 driveshafts; one in and one out. In an 108inch A-body it would be a tight fit and would leave the working pinion angle very poor, if workable at all.
-Would I do it again? probably not. Passons has a 5speed coming. 15 years ago the options were Richmond, and DougNash. Both pricey. Both need pricey support works. And limited resale.The GV can go anywhere, almost.
-The GV also works well on the Mopar O/D box, but the very wide 1-2 split in that box makes it almost mandatory to use the GV there. And with 3.55s theres just not enough d/s rpm to pull it off.I ran that combo for a couple of years with 4.30s.Problem solved you say? not so fast. The starter gear was 13.29; too deep for around town. Start in 1od you say? Well good idea. but the GV will not hold o/d through a traffic light, and slips on take off.That cant be good for it.
-The other Mopar boxes can be used if you treat the GV as an overdrive only.The ratios are just too tight for the GV to be an advantage.
I guess I should mention;
Downside 3); you cant downshift into the GV. Its strictly an upshift thing.So the o/d box didnt work that well. The double o/d feature was great on long trips to far-away places.
-So there you have it. I think I about covered it all.Did I mention Passon Performance is working on bringing a 5 speed to market. There is a waiting list.You might want to look into that. It will really wake your small-block up.I can totally imagine it in a 408 with a small cam and street-friendly gears. Or going the otherway, behind a teener with a mild,223*cam and some decent compression. Either way, fun.
But it gets better; For 1/8 mile, I shift; 1-1od-2. the ratios are 3.09-2.41-1.92.The splits are 78%,80%. SWEET. I run 3.23s out back. Goes 93mph at 7200rpm.Or if Im looking to ET well, I will regear the back to 4.1s and use 4 gears; 1-1od-2-2od. The ratios are 3.09-2.41-1.92-1.50. The split %s are 78/80/78. And 93 is 7100. Oh yeah.
-Now I havent yet run the 1/4. But if I was to, Id regear the back to 4.56s and shift; 1-2-3-3od. The ratios are 3.09-1.92-1.40-1.09. the split %s are 62/73/78. this would get me 115 at 7200.
-Around town I run 3.55s. this gets me a 10.97 starter gear, and a 2.77 cruiser gear.
-To say that this combo is flexible, is an understatement. The unit shifts faster than I can,probably faster than anybody can.Certainly faster than any automatic.
-There are two downsides;
Downside 1) The unit relies on driveshaft rpm to make its oil pressure which it uses to make the shift. If you use the supplied mini controller, this is not an issue.That controller has one important feature. If you connect it as described it will prevent the unit from engaging in reverse.The GV must absolutely not be engaged in reverse.This system was designed to be an overdrive. To that end the controller has a feature I didnt like. It seems to have a waiting period if you select it too early.Thats the first downside.
-That controller is too slow for drag-racing.To overcome this,I hooked the GV directly up to a button on the top of my shift ball.Now it shifts instantly, provided it has oilpressure. You now are the controller.
-If the d/s rpm is too slow when you call for a shift, then the shifts get mushy, and theres nothing you can do about it. Furthermore head-office was not forthcoming about that at time of sale.This is not a problem with the 3.55s and the 3.09box. This gets you 22mph at 3000 rpm, which I suggest to be the minimum spd to split. But why bother, I just use 2nd. With 3.23s the ds rpm comes up pretty slow, so I have a higher minimum road speed.
-At 4000 plus rpm with 3.55s theres plenty of oil pressure to perform a neck snapping shift. So under Wot, over 4000, its never an issue. Now here it comes;
-Downside 2); Are you going to remember to be sure the unit is not engaged in reverse? Thats a lesson that cost me a lot of money. To prevent this I installed a light on my dash to indicate engagement. And I religiously check it every time I grab reverse. Really I should rig a relay to the reverse light sw. but I havent yet.
-There are other things; GV will not sell you any tools or parts or extra adapters for it . If you want to put it onto something else, you must return the current adapter in exchange for another. It requires a special, expensive oil.I think it weighs 23 pounds.Thankfully the weight is in a great place.You can purchase it as a stand alone unit.That would require 2 driveshafts; one in and one out. In an 108inch A-body it would be a tight fit and would leave the working pinion angle very poor, if workable at all.
-Would I do it again? probably not. Passons has a 5speed coming. 15 years ago the options were Richmond, and DougNash. Both pricey. Both need pricey support works. And limited resale.The GV can go anywhere, almost.
-The GV also works well on the Mopar O/D box, but the very wide 1-2 split in that box makes it almost mandatory to use the GV there. And with 3.55s theres just not enough d/s rpm to pull it off.I ran that combo for a couple of years with 4.30s.Problem solved you say? not so fast. The starter gear was 13.29; too deep for around town. Start in 1od you say? Well good idea. but the GV will not hold o/d through a traffic light, and slips on take off.That cant be good for it.
-The other Mopar boxes can be used if you treat the GV as an overdrive only.The ratios are just too tight for the GV to be an advantage.
I guess I should mention;
Downside 3); you cant downshift into the GV. Its strictly an upshift thing.So the o/d box didnt work that well. The double o/d feature was great on long trips to far-away places.
-So there you have it. I think I about covered it all.Did I mention Passon Performance is working on bringing a 5 speed to market. There is a waiting list.You might want to look into that. It will really wake your small-block up.I can totally imagine it in a 408 with a small cam and street-friendly gears. Or going the otherway, behind a teener with a mild,223*cam and some decent compression. Either way, fun.
Treblig
Well-Known Member
It's cheaper to do this...
http://www.forabodiesonly.com/mopar/showthread.php?t=252436&highlight=treblig
minor modifications required.
Unfortunately it's not a Chrysler transmission, but I love the way it drives!!!!!!!! Top speed 170 MPH at 5800 RPM with 3:90 gears.
Treblig
http://www.forabodiesonly.com/mopar/showthread.php?t=252436&highlight=treblig
minor modifications required.
Unfortunately it's not a Chrysler transmission, but I love the way it drives!!!!!!!! Top speed 170 MPH at 5800 RPM with 3:90 gears.
Treblig
71Scamper
Mopar runs thru my veins!
Look at http://shiftsst.com/mopar. The A41 automatic overdrive kit doesn't require any floor mods. It's based on the GM 4l65e.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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I guess the speed limits, too, in Texas are bigger than anywhere else. lol.
But yeah the ratios are nice. I love those slot wheels. I also have 15x10s out back. But 14x 7s in front.
But yeah the ratios are nice. I love those slot wheels. I also have 15x10s out back. But 14x 7s in front.
Treblig
Well-Known Member
Speed limits are 85 MPH on some Texas highways but it's nice to be able to brag about the top end even if wind resistance (and handling) would never allow me to get there. It's amazing that I could possibly go that fast with 3:90 gears. And just for reference I spent a little over $1800 to put the 2004R into my '69 Barracuda but I did all the work myself EXCEPT for the tranny overhaul ($900). I don't know of any overdrive system out there that would even come close to $1800!!!! My gas mileage greatly increased on the highway and the noise level (exhaust drone) went way down.
treblig
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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You did exactly what I will do if I get to live long enough.(re the GM auto)
This year I promised the wife to work on the house. Ill be 62 in June.Next winter, I get to finish my shop/garage.Then its time to get after the 68 S-clone.Bodywork first.rear quarters mostly, and interior.The years are piling on too fast.
Nice work on that car.
This year I promised the wife to work on the house. Ill be 62 in June.Next winter, I get to finish my shop/garage.Then its time to get after the 68 S-clone.Bodywork first.rear quarters mostly, and interior.The years are piling on too fast.
Nice work on that car.
Treblig
Well-Known Member
Thanks, I'm one year ahead of you and I agree....the time seems to fly!!! Don't know why???
Treblig
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