Converting to 2BBL to 4BBL

dobler5

Seaman Apprentice
Joined
Apr 13, 2010
Messages
31
Hey my first post!
I have a 1991 4.3L GM OMC COBRA with a 2BBL Carb. I just bought a 91 4.3L HO OMC Cobra engine that was cracked during winter storage. I was just going to part out all the parts. I noticed it has a 4BBL Carb. Can I put that on my engine? If so, what all would I have to do? Would it be worth it? Etc. I am a dummy when it comes to engines. Thanks for your help!
 

Gary H NC

Fleet Admiral
Joined
Dec 1, 2005
Messages
8,972
Re: Converting to 2BBL to 4BBL

Welcome to Iboats!
Swap the carb and intake manifold.
Same vintage motor so it should be an easy switch...
 

duke3478

Seaman
Joined
Jul 20, 2009
Messages
58
Re: Converting to 2BBL to 4BBL

Swap the heads and cam while you're at it, and then you'll have an HO, too. I think...(?)
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: Converting to 2BBL to 4BBL

Heads and cam are the same, stay with the simple, swap the intake assy.
 

180shabah

Rear Admiral
Joined
Mar 26, 2005
Messages
4,995
Re: Converting to 2BBL to 4BBL

Swap the intake and carb, the heads and cam are the same. You MUST use the HO stickers to make full power:cool:
 
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