2BBL to 4BBL Carb Intake on a 5.0L whats needed?

[tuttle593]

looking to swap out my 2 barrel carb for a 4 barrel on my 2003 5.0L murcrusier its a starcraft nexstar 19' boat with 220hp boats rated for 4800 rpm max thats what im at now with a 20p ss prop looking for more power than a 21p ss prop..

heres what i got so far, what about gaskets misic. parts ect..

http://www.summitracing.com/parts/EDL-1409/

http://www.summitracing.com/parts/ED...e|5.0L/305

this company makes a kit not sure if there any good or not?

http://marine-performance-parts.com/hipsbcm.aspx

High Rise Cast Iron Intake
-Brand New Edelbrock Marine 4bbl Carb w/ Electric Choke
-K&N 9x4" Stainless Flame Arrestor w/PCV Tubes
-Intake, Carb, and Thermostat Gaskets
-Carb Mounting Bolts
-Intake Manifold Plugs
-Fuel Line (Mercruiser)
-Throttle Bracket (Mercruiser)
-Electric Choke Power Wire (choke is self grounded)
-RTV Silicone Sealer

 

[Failproof]

Re: 2BBL to 4BBL Carb Intake on a 5.0L whats needed?

Looks like you got a handle on it. Dont forget items like the throttle cable bracketry and such may need modified or replace cable with compatible model. But in all honesty i dont think your gains will be all that "huge". Might even notice a drop in mid rpm response. But hey, everbody loves a 4barrel!

 

[tuttle593]

Re: 2BBL to 4BBL Carb Intake on a 5.0L whats needed?

No one can help? 4bbl bad idea? Have 4 to 5 people in the boat always

 

[Bondo]

Re: 2BBL to 4BBL Carb Intake on a 5.0L whats needed?

No one can help? 4bbl bad idea? Have 4 to 5 people in the boat always

Ayuh,.... What's the matter with Failproofs reply,...

Other than yer willin' to throw $900. at it,... It sounds Ok to me...

You can expect, 'bout 20hp extra...
That might give a 1, maybe 2 mph more...