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what overdrive is it

MEGALADON

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can someone tell me if the 82 GMC 4x4's came with a 200-4 or 700-4 trans
and what the type stock transfer case they came with. thanks
 
200R4's had the BOP bellhousing behind buicks, Oldsmobiles, and Pontiacs.
Any 1982-'95 1/2 chevy will have a th700R4 if it is an auto 4 spd and a small block in front of it.
An NP208 backs them up until '89.
 
is the NP208 a good case? for light duty. My plan is to put the overdrive

back in with a stock 454 from a 78 GMC 1 ton in my 82. THANKS

Do I have to be a member to send private messages, I dont know
the ropes here, as I am new, with a million questions :D
 
2004R is most commonly seen with the dual bolt pattern bellhousing, Chev and BOP. There were Chev specific ones.

No, they didn't come in trucks, they are a 2WD only trans.
 
sweetk30 said:
best be getting a BIG reman spec unit for the 454 to not kill it.

you mean a whole trans, or parts?
I take it I should stay with the 350 trans.
Even a stock 454 will hurt it. :(
 
454 will kill much faster than 350 or 400 will in my book dont like them. i do the full swap and go 4l80-e my self for the combos i run thay are a 400 with od and are masive units. that will hold 454 no problems.
 
MEGALADON said:
is the NP208 a good case? for light duty. My plan is to put the overdrive

back in with a stock 454 from a 78 GMC 1 ton in my 82. THANKS

Do I have to be a member to send private messages, I dont know
the ropes here, as I am new, with a million questions :D
The 208 is a fine case, it will take pretty much any amount of punishment you can put to it without banging it against a rock and it will probably be fine if it doesn't have a ton of miles on it. The aluminum case housing is a little weak and can crack under constact with something but the internal chain can take a lot of power, and drag from tires.

Your Th700R4 tranny will not like being behind a BBC, especially since it's an '82 which is considered the worst year for them. They were so bad though, that chances are yours has been upgraded. If it has infact been updated with very low mileage you could add a shift kit and get the correct gearing in the axles and probably not have any problems for quite a while.

There are lots of aftermarket manufactures that offer beefed up versions of the TH700R4. I have a built up one myself and lives plenty happy behind my built 406sbc that makes more power than a stock 454. THey are VERY good trannies under the right conditions.
 
the 700R-R4 is from a 91 camaro rs.

But im starting to get the message
this swap might be a bad idea :(
 
MEGALADON said:
the 700R-R4 is from a 91 camaro rs.
It won't work. There is a difference between a 2wd and 4wd tranny. Obviuosly the camaro will have a 2wd case, with your '82 having a 4wd case.

If the camaro had a V6 the tranny will have one clutch less in every pack vs. the V8 version.

But im starting to get the message
this swap might be a bad idea
Not neccessarely. It depends on how much money you want to spend to make everything right. With the truck being an '82 it is already setup for a Th700 so that is easy and the 454 will bolt in fairly easy, far as I know. If it was me I would use the stock th700R4 that is in the '82 and install the 454. Run it but have the money aside ready for a quality rebuild fora built 700.

There are plenty of people running BBC's in front of built Th700's. Also like me, there are even more guys that have built SBC's easily surpassing th power of a stock carbed 454 in front of TH700r4's.
 
rjfguitar said:
far as I know. If it was me I would use the stock th700R4 that is in the '82 and install the 454.

thats the problem, I have no idea what happened to it.
the camaro had the v8 tbi setup.
 
common sense tells you that if you drive it like drag car on the street then punish it offroad it will die real quick but your problem is the low end torque of a big block. Unlike a smallblock(unless its built like a beast) bigblocks have a relativly flat torque curve that comes on all at once so it will stress the 700 more than a sbc that has the same peak numbers would because it's more of an instant power with the bigblock, where a smallblock will make the same power higher in the powerband and not as violently. As long as you don't mash the throttle over and over I don't see why the camaro 700 wouldn't live for a respectable while if you don't over heat it, but if you wheel like most people on this site do you can expect to find yourself at a tranny shop in a month or two.

Just my 2 cents....
 
As long as you don't mash the throttle over and over I don't see why the camaro 700 wouldn't live for a respectable while if you don't over heat it, but if you wheel like most people on this site do you can expect to find yourself at a tranny shop in a month or two.
The 700 out of that Camaro will live just fine, where ever it goes, which wont be behind his 454 since it is a 2wd transmission. Do you know the difference? :p:
 
MEGALADON said:
thats the problem, I have no idea what happened to it.
the camaro had the v8 tbi setup.
Well this presents you the option of going with a new unit from a reputable company that is built and will easily handle a stock 454. Like I mentioned, the camaro tranny will not work.
 
forgot about that

Edit-
This is a great cpmpany, they sold me all the parts to convert my
81 vette to the 700R-4, best mod i did.

guess i was right the first time
 
Last edited:
rjfguitar said:
Well this presents you the option of going with a new unit from a reputable company that is built and will easily handle a stock 454. Like I mentioned, the camaro tranny will not work.


this is what i'd do. most of the companies that build performance trannies dont have a core charge either. you can build a 700 to handle BB power. check out this site

www.700r4.com

i got my tranny from them, great people. check out thier site and give them a call. they will either reccomend the level 3 or 4 version, depending on how mild your BB is. they are very knowledgable and can steer you in the right direction
 
by the way, ill take that camaro 700 off your hands for ya. dont want it cluttering up your garage now that u dont need it.:D
 
Jonny-K5 said:
this is what i'd do. most of the companies that build performance trannies dont have a core charge either. you can build a 700 to handle BB power. check out this site

www.700r4.com

i got my tranny from them, great people. check out thier site and give them a call. they will either reccomend the level 3 or 4 version, depending on how mild your BB is. they are very knowledgable and can steer you in the right direction


This is a great cpmpany, they sold me all the parts to convert my
81 vette to the 700R-4, best mod i did.

I just wanted to put this overdrive in my truck since I already had it,
the motor to. Maybe i will just stick to the 350 trans :) .
I'm thinking my next mod's will be a 4 inch lift with 33x12 1/2
and 15x10 inch rims :D
 
Why would you want to go with a 350 trans? You would have to modify things to get the 350 to work since it is designed for a TH700R4. If I have gathered correctly you have NO transmission right? I would get a TH700R4 to put back in where one was before and go ahead and use a 454 if you'd like.

Your lift and tires sounds good to me.
 
rjfguitar said:
Why would you want to go with a 350 trans? You would have to modify things to get the 350 to work since it is designed for a TH700R4. If I have gathered correctly you have NO transmission right? I would get a TH700R4 to put back in where one was before and go ahead and use a 454 if you'd like.

Your lift and tires sounds good to me.


LOL, I have a 350 trans in it now, I put the 91 camaro 305 in the truck
and 3 month later blew it up :D that was just with regular freeway flying.
I kept the trans from the camaro to, cause it had pretty low miles, I knew one
day I would want to put it in the truck with the 454, and get better freeway
gas milage. But I do have a 350 trans in it now, and with the overdrive I knew
I would get better off the line pep. :grin:
I may just go ahead and put the 700R-4 in and see how long it last. I know there will be no offroading going on.

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