200 4R - which bell housing is best ?

Cuse99

Greasemonkey
Dec 21, 2020
167
28
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
Supporting Member
Dec 26, 2013
12,987
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.
 

565bbchevy

Geezer
Aug 8, 2011
8,335
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.
 

Cuse99

Greasemonkey
Thread starter
Dec 21, 2020
167
28
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
8,335
113
Michigan
BOP and Chevy (dual pattern)

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565bbchevy

Geezer
Aug 8, 2011
8,335
113
Michigan
  • Agree
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MrSony

Geezer
Nov 15, 2014
6,104
113
Des Moines, Iowa
every 200r4 ive seen has been a unibell.
 

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