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#1 |
Senior Member
![]() Join Date: Feb 2003
Location: Gold Canyon Arizona
Posts: 4,353
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2004r bolt pattern same for....
just wanting to know if the chevy bolt pattern are the same as oldsmobile,buick,pontiac,trans bolt pattern? i understand they're all gm,but not sure of bolt pattern... wanting to change from th350 to 200 4r ...
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1971 K5 CST Blazer 1951 -3100 5 window short bed 4sp 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey |
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#2 |
Registered User
Join Date: Oct 2007
Location: Sykesville MD
Posts: 357
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Re: 2004r bolt pattern same for....
apparently most 2004r's were used in olds/caddies/buicks, but they did make a bell housing that would fit both chevy and other GM, so if you have one of these bell housings you should be ok, if not you can look for this special bell housing, i know my fathers 87 caprice came with a 2004r. see the image and info below
http://images.google.com/imgres?imgu...%3D2%26hl%3Den
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'55 3100 2nd series short-bed stepside '70 Corvette coupe stingray '71 Chevelle 2-dr coupe SS clone '71 C10 long-bed fleetside '83 long-haired brunette wife |
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#3 | |
Senior Member
![]() Join Date: Feb 2003
Location: Gold Canyon Arizona
Posts: 4,353
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Re: 2004r bolt pattern same for....
Quote:
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1971 K5 CST Blazer 1951 -3100 5 window short bed 4sp 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey |
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#4 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,500
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Re: 2004r bolt pattern same for....
GM made three different bellhousing to engine block bolt patterns, in order of commonality:
1. Dual pattern to fit BOP (Buick Olds Pontiac) or Chevy-most common 2. BOP only 3. Chevy only I have only seen one BOP only, and no Chevy only 2004r case. Granted, I do not rebuild trannys for a living. |
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#5 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: 2004r bolt pattern same for....
wideside is right, most came with a daul bolt pattern.
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#6 |
sharp as a marble
![]() Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
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Re: 2004r bolt pattern same for....
Chevy used a 200r4 in the Monte Carlo SS'S and some of the other mid sized and full sized Chevy's. There is a tag on the passenger side of the trans with a two or three letter code on it. I used to have a couple of Buick Grand Nationals, and they had a 200r4 in them The letter code was BRF. they are like hens teeth to find and pricey. I found a two letter code unit that we put into a 55 Chevy and it was SWEET. The letter code is a calibration code. I do not remember where I found it, but on the internet if you do a search you can find the ones that will have a nice firm shift. They did use these in some Caprice and Impala's and they can be mussy when shifting.
i JUST WENT LOOKING FOR THESE LETTER CODES AND CANNOT FIND WHAT i WANT. If you are looking for a 200r4, I would think the prefered would be a monte Carlo trans. Last edited by cparman; 02-17-2009 at 07:08 PM. |
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#7 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: 2004r bolt pattern same for....
Quote:
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#8 |
sharp as a marble
![]() Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
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Re: 2004r bolt pattern same for....
thanks 67 C-30!! The 200r4 will stay together behind a bunch of horsepower. watched a bunch of Buick GN's making 400-800 hp use one of these trans. I looked since my last post and cannot find a web site to reference the prefered letter code 200's. will keep looking. I like the 200 as well as the 700 OD trans. We put a 200 in a 55 Chevy wagon, and it had a prefered letter code. Shifts nice, a nice firm bump when changing gears. lock up works off the brake pedal, and has a toggle switch for manual lock up. Just fun stuff !!!
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#9 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: 2004r bolt pattern same for....
I had an '81 Impala wagon that had a 200R4. I also looked at an '84 Suburban 4wd that also had a 200R4.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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#10 |
Senior Member
![]() Join Date: Feb 2003
Location: Gold Canyon Arizona
Posts: 4,353
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Re: 2004r bolt pattern same for....
chris 71 .... nice find,helps alot,thx,
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1971 K5 CST Blazer 1951 -3100 5 window short bed 4sp 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey |
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#11 |
Registered User
![]() Join Date: Feb 2000
Location: Georgetown, KY, USA
Posts: 631
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Re: 2004r bolt pattern same for....
The Buick GN/T-Type 200r4 trannies were built with a lot of hardened parts that the standard 200r4 had. I had a 87 T-Type with the 3.8 SFI Turbo and when I had to get it repaired (I was hard on it!) the hardened parts were not availible. Buick GN guys started leaning on the Buick Engineers to release the hardened parts to the market. By the mid 90's we had the parts needed to repair the GN 200r4 trannies as they should have been.
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