Mercruiser 485 3.7 Holley Carb?? anybody seen this?

[billywhizz]

I decided at 25 years old and no success with the rebuild that my carb needed replacement, Holley carbs seem to have all the good references, so i made a few enquirys only to be told that there is no Holley carb that will fit a 485, Dissapointed , any body know different?

 

[Bondo]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

Ayuh,..... No surprise,... Mercruiser doesn't use Holleys...

 

[zbnutcase]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

Thats correct, a Holley is too long to fit as the carb sits sideways. However a Edelbrock/Weber AFB should work with an spreadbore to squarebore adapter. 'nutcase

 

[billywhizz]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

Thats correct, a Holley is too long to fit as the carb sits sideways. However a Edelbrock/Weber AFB should work with an spreadbore to squarebore adapter. 'nutcase

Right, gotya, so is the Edelbrock a more reliable and consistant option than mercarb or rochester? thanks

 

[mdlee]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

I had my 2 quadrajets for my 3.7ls rebuilt by National Carb in Jacksonville Fla. They came back like NEW!! it cost me $175 per carb. Check out there web site www.nationalcarburetor.com. Good luck

 

[zbnutcase]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

One big advantage of the Edelbrock/Weber (and Holley) is the availabilty of tuning parts. Most Q-Jets tuning parts NLA and Mercarbs almost impossible. 'nutcase

 

[billywhizz]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

One big advantage of the Edelbrock/Weber (and Holley) is the availabilty of tuning parts. Most Q-Jets tuning parts NLA and Mercarbs almost impossible. 'nutcase

thanks for your reply, i have checked out the Edelbrook carbs and the smallest marine carb i can see is 600cfm which is twice what i need, will this make it a no go situation?

 

[Bondo]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

i have checked out the Edelbrook carbs and the smallest marine carb i can see is 600cfm which is twice what i need, will this make it a no go situation?

Ayuh,... It'll be just Fine once you tune it....
The old Roctesters were something like 850cfms....

 

[billywhizz]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

Ayuh,... It'll be just Fine once you tune it....
The old Roctesters were something like 850cfms....

That will do for me, wey hey lets give it a go, will keep you posted, thanks for the reply.

 

[Gary H NC]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

This company is great to work with.I have bought at least 10 carbs from them.Never a problem and they ran great.
http://www.marinecarburetor.com/

 

[billywhizz]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

One big advantage of the Edelbrock/Weber (and Holley) is the availabilty of tuning parts. Most Q-Jets tuning parts NLA and Mercarbs almost impossible. 'nutcase

ZB, thanks for your reply to my other post,looks like i am running out of options, i made a few enquirys about edelbrock carbs but have just been told by Vic hubbard that i cant replace my 2bbl mercarb with a 4bbl edelbrock, why? is there any other options?

 

[stonyloam]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

You could go with a 4 bbl Mercruiser, with a (rare, hard to find) 4 bbl Mercruiser 3.7 manifold.

 

[zbnutcase]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

Yours has a 2bbl carb? That changes everything! You could then use the marine 500cfm Holley (Holley P/N 0-80402-1) with a adapter. I could swear the 485 was a 4bbl, but who knows decals are easy to change. 'nutcase

 

[Don S]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

The 485 used a 2bbl carb, circa 80 - 82. The 488 was the first of the 4bbl carbs circa 83 - 84.

 

[zbnutcase]

Re: Mercruiser 485 3.7 Holley Carb?? anybody seen this?

Ah, thanks Don for the refresher. It was the 488 I was thinking of. 'nutcase