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Old 09-14-2021, 09:47 AM
Steve C. Steve C. is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
Posts: 10,430
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My 200-4R was built 14 years ago by a well known builder of transmissions for high-performance applications involving Buick GN racing. And as eluded to in the conversations here it was very expensive ! With that transmission my 505 engine started making 600 ft.lbs torque at around 4000 rpm and carried 600+ ft.lbs up thru 5700 rpm. At peak torque rpm it had 640 ft.lbs. About one year after it went into operation I had some slipping in 3rd gear, the trans came out for a simple repair (adjustment?). While the transmission was out I had it converted to a non-lock up torque converter. For reasons eluded to here in the thread I personally DID NOT like using a lock up torque converter ! With the 505 and the 200-4R transmission my car has been to the track only a few times for interest only to see how deep into the 10s it could run, it is now street use only. There has been no issues with the transmission in the last 13+ years.


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__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/

Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE
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