Weber change to Holley

[Stingray1961]

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]

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]

No Title

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