wILL A 200R4 WORK WITH A STOCK 231 3.8L BUICK V6

[pontiacgp]

just make sure the 200r4 bellhousing has a buick bolt pattern. I think most were built with a dual bolt pattern but I know some were build with just a bolt pattern for a chevy

 

[8387sjw]

I wonder if that will work, I had a 200 r4 behind the stock 305 in my Caprice and it could barely move the car without knocking or pinging. Maybe you'll have better luck since you're in a lighter g-body.

 

[G_Body_Enthusiast]

just make sure the 200r4 bellhousing has a buick bolt pattern. I think most were built with a dual bolt pattern but I know some were build with just a bolt pattern for a chevy

AFAIK 2004r's came with a dual pattern (chevy and BOP) or a BOP only pattern. if you have pics of a 2004r with a chevy only bolt pattern i'd like to see it.

 

[bill]

If I may highjack this thread a bit....I was planning to run a th350 behind my sbo 350. But I have found a 200r4 and Im wondering how much trouble it would be to use this instead. Id like to have overdrive, but I dont have a 307 ecm to control the engine and was not planning to use one. what would I need to do to make this trans work? (driveshaft, crossmember, ecm)? How does the ecm relate to the od trans? Thanks~!

 

[bill]

anybody? 😀

 

[FE3X CLONE]

The TH-2004R (it's 4R and not R4 like the 700. 😉) was a pre-computer controlled trans. The only thing the stock ECM controlled was the lock-up torque converter. This can easily be remedied by using an aftermarket lockup controller from B&M.

What trans is in your car now?

 

[bill]

The car came with the 3.8l v6 and a 200metric. I was planning to use a th350 but was concerned about mpg. If the 2004r is a simple swap, then I will use it, but if it will require a diff drive shaft or crossmember or other mods, it might not be worth the trouble and expense. Thanks for the info!

 

[bill]

This thread from Oldspower.com pretty much answered my questions about the th2004r vs th350 swap.

this should be a sticky on this website too....imo

http://www.oldspower.com/vb/showthread.php?t=31439

 

[bill]

The TH-2004R (it's 4R and not R4 like the 700. 😉) was a pre-computer controlled trans. The only thing the stock ECM controlled was the lock-up torque converter. This can easily be remedied by using an aftermarket lockup controller from B&M.

What trans is in your car now?

Do you know who has this part? Part number?

THanks!

 

[pontiacgp]

if you going to use a kit for the lock up they will tell you that you need a two wire solenoid. When you remove the pan if you only have a one wire don't waste your money to buy a two wire. They are all two wire but some ground the solenoid on the mounting bracket for the solenoid and they call those a one wire...but all you have to do is add wire to that ground wire to make it into a 2 wire