Offshoreonly.com - Q-jet Jetting

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Rick G

01-10-2005 09:17 AM

Q-jet Jetting

Over the last few years I have pumped up my stock 330 hp 454's to about 425 hp. Cleaned up the heads and increased flow , changed the cam shaft , went 30 over on the bore , new pistions and bearing , rings and related hardware also put on aluminum intakes ( torker 2.0). My question is about carb jetting. I had the stock Q-jet carbs fattened up for fear of running lean but I think they over jetted. Does any body know what the stock jet setup primary and secondary is so I can base line the carbs . Thanks in advance.

Rick G.

boatman747

01-10-2005 09:31 AM

Re: Q-jet Jetting

go to mor- tec . They post all factory jet sizes.

Rick G

01-10-2005 09:44 AM

Re: Q-jet Jetting

Under which heading would I look. There seems to be a wealth of info. Thanks Boatman 747

Rick G

01-11-2005 01:53 PM

Re: Q-jet Jetting

Any other thoughts . I don't seem to be able to find the area on this web site that lists the jetting info for Q-Jets.

Rick G.

Whiteknuckle

01-11-2005 07:54 PM

Re: Q-jet Jetting

Dennis Moore's book on BB Chevy Marine Engines has a great section on Q-jets and all the info you are looking for.

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