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General Forums => The Mess Hall => Topic started by: rwing1 on October 12, 2006, 01:28:53 PM
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I am considering trans swap possibilities, and I am kinda fond of the "4 squirrels that could". Has anyone done research or performed a swap with a 700R out of a 60degree v6 S10 vehicle? I understand the bellhousing pattern on the 2.5 is the same but will everything work with the right pieces? Just seems like a decent 4-spd auto with aftermarket behind it. If you used a trans out of a 4wd S-10 type vehicle, don't some of these use a chevy version of the NP231 T/C? Could these pieces fit together, or even almost be a bolt-in swap?
My Yj is a '94 with the 4.0TB,exhaust work, homebuilt open-element intake system, and an 2-spd electric fan out of a 90's Intrepid, running 31" BFG MudTerrains.
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I am considering trans swap possibilities, and I am kinda fond of the "4 squirrels that could". Has anyone done research or performed a swap with a 700R out of a 60degree v6 S10 vehicle? I understand the bellhousing pattern on the 2.5 is the same but will everything work with the right pieces? Just seems like a decent 4-spd auto with aftermarket behind it. If you used a trans out of a 4wd S-10 type vehicle, don't some of these use a chevy version of the NP231 T/C? Could these pieces fit together, or even almost be a bolt-in swap?
My Yj is a '94 with the 4.0TB,exhaust work, homebuilt open-element intake system, and an 2-spd electric fan out of a 90's Intrepid, running 31" BFG MudTerrains.
I believe it's doable but you might need to space the torque converter yourself.
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In the FAQ section on tranny swaps there is a picture of a 3.4L Camaro V6 with a Jeep AX5 bell bolted on. This would seem to answer the bellhousing question, the 700R should bolt on there. From what I have found the Chevy NP231 is made different than the Jeep 231 so I think I might still need the adapter from Advance Adapters to mount up to the transfer. I wonder if the factory Jeep 2.5 auto flexplate would be adaptable to the Chevy TorqueConverter. Would the bellhousing spacing be off far enough to need a spacer? In the FAQ write-up on the 3.4V6 and AX5 bell, I think the mention of the Camaro Flywheel to space out the clutch was for the Toyota Short input shaft trans being mounted. I need to hit the junkyard and take a few measurements.
On another note though, anyone swapped in a 3.4L V6 out of a Camaro? Should even bolt infront of the soon to be dead AX5.
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In the FAQ section on tranny swaps there is a picture of a 3.4L Camaro V6 with a Jeep AX5 bell bolted on. This would seem to answer the bellhousing question, the 700R should bolt on there. From what I have found the Chevy NP231 is made different than the Jeep 231 so I think I might still need the adapter from Advance Adapters to mount up to the transfer. I wonder if the factory Jeep 2.5 auto flexplate would be adaptable to the Chevy TorqueConverter. Would the bellhousing spacing be off far enough to need a spacer? In the FAQ write-up on the 3.4V6 and AX5 bell, I think the mention of the Camaro Flywheel to space out the clutch was for the Toyota Short input shaft trans being mounted. I need to hit the junkyard and take a few measurements.
On another note though, anyone swapped in a 3.4L V6 out of a Camaro? Should even bolt infront of the soon to be dead AX5.
Yes, the 2.5L uses the GM 60 Degree bellhousing bolt pattern but like I said you'll need to shim the TC, probably need to weld on new mounts with propper spacing.
Why would you want to use a NVG-231-J? No one makes an adapter. The internals are mostly interchangable with the 231-C. The 231-C might uses a 6 bolts to bolt it to the transmission while the 231-J uses 3. (worst case it will have a 3 but I doube it.) Using a spacer would mean you'd need to add an extention onto the input shaft and the spacer would bring it back a few inches. It's not worth the trouble. Just use the 231-C. Not to mention the only real differences is in the front outer case and the tail shaft and main shaft assembly. I forget if the C has the 1-1/4" chain or the 1" chain like the J. If it's got the 6 gear planetary then it will have the wider chain though.
A friend of mine who was going to turbo his 2.5L was also going to install a 700R4 60 and went over to Tri-County Gear and talked to them about it. THey could do it there since they also do 4.0L 700R4 swaps. Although like I said, before they weld on spacers to the TC to get it to work.
Keep in mind that the biggest concern with a 2.5L is that the transmission is going to suck a lot of power from the engine. The 2.5L auto's were always a bit of a slug and they're only 3-speeds. They needed the extra RPM's from staying in 1:1 to keep the speed up.
With all that work to try to get a 700R4 in there, you might as well just drop in a 3.4L or 3.8L with it. Or get a 4.3L...
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You have good point about the Auto sucking even more power out of the engine. I suppose by best swap would be an AX-15 or 3550. That opens the door wider for future engine swaps too. If I had the money...... I would just start with a new Hemi and matching Automatic trans. Then build up the rest of the Jeep to take the abuse. But If i had money, I wouldn't have this poor old Jeep to begin with, I'd have a Rubicon.....with a Hemi!
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FYI to anyone interested... I sent an e-mail to www.high-impact.net and Greg Miller responded:
"Interesting possibility. We have a system where we use an NV3550 5 speed onto the 2.5L "four squirrel" motor. Your 700R4 is an interesting idea, but I don't have the answers for you without doing a bunch of research. If you want to order a 700 from me, I imagine I could figure out how to make it happen. 700R4 bad boy $1875, I would figure about $75 for a flexplate - I would just take the jeep flexplate and redrill it to fit a 700 torque converter. "
Greg Miller
High Impact Wheels / Transmission & Gear
Toll Free 888-898-4331
www.high-impact.net
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FYI to anyone interested... I sent an e-mail to www.high-impact.net and Greg Miller responded:
"Interesting possibility. We have a system where we use an NV3550 5 speed onto the 2.5L "four squirrel" motor. Your 700R4 is an interesting idea, but I don't have the answers for you without doing a bunch of research. If you want to order a 700 from me, I imagine I could figure out how to make it happen. 700R4 bad boy $1875, I would figure about $75 for a flexplate - I would just take the jeep flexplate and redrill it to fit a 700 torque converter. "
Greg Miller
High Impact Wheels / Transmission & Gear
Toll Free 888-898-4331
www.high-impact.net
Try contacting Tri-County Gear http://www.tricountygear.com/. I'm sure they will do it. Actually, they will do it, if you've got $$$. This is where my friend went when he was going to do his. Problem is they never reply to emails.
I still like the NV3550 swap though. It's not an auto but ti will set you up for a engine swap later if you want. With the V6 700R4, you'd be stock with it unless you swapped the transmission to a 90* version. Someone else mentioned there is a AW4 that was used with the 2.5L on the XJ's. This is a 4-speed auto tranny also. I've never seen one before though.