200 4R - which bell housing is best ?

Cuse99

Greasemonkey
Dec 21, 2020
230
43
i'm about to order a 200 4R and suddenly realized I'm not sure if its better to get the universal bell housing or the specific. I think it's called the BOM or POC or similar. Does it matter?
 

fleming442

Captain Tenneal
Dec 26, 2013
13,070
113
BOP= Burick, Olds, Ponchiac. They're different than Chevy. There's also a few universal/dual pattern units out there, but don't know if they're available aftermarket. The pattern you buy is dependent upon the engine and/or future engine plans.
 
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565bbchevy

Geezer
Aug 8, 2011
8,656
113
Michigan
My 86' Regal came with an Olds 307 and a dual pattern 200R4 which made my SBC swap a simple bolt on for the trans and that is the only design I would want.
 
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Cuse99

Greasemonkey
Thread starter
Dec 21, 2020
230
43
My current motor is a 305, but I plan to swap a to a 350, but not more than 300 HP. Thanks for the responses.
Is there a way to Identify which one I get once its delivered? Or to make sure its at least Chevy small block comparable?
 

565bbchevy

Geezer
Aug 8, 2011
8,656
113
Michigan
BOP and Chevy (dual pattern)

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565bbchevy

Geezer
Aug 8, 2011
8,656
113
Michigan
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MrSony

Geezer
Nov 15, 2014
6,214
113
Des Moines, Iowa
every 200r4 ive seen has been a unibell.
 
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rfpowerdude

Master Mechanic
Jul 15, 2013
396
93
Palm Bay, Fla
All my 200-4R's were BOP only. I have yet to see a dual pattern BOP/Chevy bellhousing.
 
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