Weber change to Holley

Stingray1961

Seaman Apprentice
Joined
May 18, 2010
Messages
38
I have a 1993 stingray zp. 4.3 mercruiser Weber 4 barrel I want to put the marine Holley in does some one know if it's a direct bolt in or do you have to change the manifold
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
47,310
depends on the holley carb. some are spread bores, some are square bores.

Me, personally, I would run a 2" spacer

also, changing from the Weber to a Holley wont gain you any performance if that is what you are looking for
 

Stingray1961

Seaman Apprentice
Joined
May 18, 2010
Messages
38
No Title

Well I personal don't like the Weber I had it rebuilt and I have been loosing power carb surges
 

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