WeGotMud

Projects & Parts => Garage/Tech => Topic started by: Blazin40s on April 16, 2012, 08:16:36 PM

Title: carb selection
Post by: Blazin40s on April 16, 2012, 08:16:36 PM
So in the k5 I have a 350 .30 over, .10 under on crank rod and main journals.  Arp bolts, trw flat top forged pistons, crane cam with .244 duration, .050 on the exhaust and .510lift, 2.02 world sportsman heads, 1.91 manley valves with .550 max lift, comp cam roller rockers and trickflow push rods, and an edelbrock performer manifold, and 2in carb spacer. .  Right now I'm running a 750 vaccum secondary, but I'm thinkin of gettin a newer carb.  Do I need a 750 dp?  Or would the 780 truck avenger work better?  This truck sees street, mud, and trails.  Don't want it to load up, but the motor dosnt make much vaccum with the big cam.  Any imput guys??  ++peace ++peace
Title: Re: carb selection
Post by: 4x4xdodgeman on April 17, 2012, 01:37:49 AM
one thing you have not said is what size  converter?
Title: Re: carb selection
Post by: Blazin40s on April 17, 2012, 03:26:16 AM
2500 stall in a 700r4, 4.10s in axles, with 39.5 swamper iroks
Title: Re: carb selection
Post by: Jjay78 on April 17, 2012, 03:37:07 AM
a 750 dp would make ya happy
Title: Re: carb selection
Post by: Squirell on April 17, 2012, 01:43:44 PM
Cubic inch times max rpm divided by 3456
Title: Re: carb selection
Post by: Blazin40s on April 17, 2012, 02:05:34 PM
I got 719.  Where does this formula come from?

Quote from: Squirell on April 17, 2012, 01:43:44 PM
Cubic inch times max rpm divided by 3456
Title: Re: carb selection
Post by: Squirell on April 17, 2012, 03:21:43 PM
I got it from a how to build horsepower book.. Its what I use to get mine always round up though. So you need a 750. Mine needs a 830
Title: Re: carb selection
Post by: Blazin40s on April 17, 2012, 03:23:56 PM
I knew I needed a 750 already.  The question is do I need a dp or vaccum secondary?  If I get another vac sec it will b the truck avenger
Title: Re: carb selection
Post by: Squirell on April 17, 2012, 03:27:41 PM
In a boggeri would always run  dp mechanical secondary... The throttle response is far better than vacuum
Title: Re: carb selection
Post by: Ranger Dave on April 17, 2012, 03:41:18 PM
mechanical secondary,  will wake that truck up !
Title: Re: carb selection
Post by: Blazin40s on April 17, 2012, 08:30:11 PM
Will the douple pumper load up while trail riding?  I bog this truck, trail ride this truck, and also drive this on the road.....and no gas mileage isn't a concern loll
Title: Re: carb selection
Post by: 4x4xdodgeman on April 17, 2012, 09:17:44 PM
you can run any carb on any motor, you just need to set it up for that motor!!   do you thank you will ever  build a bigger motor, some time soon if so thank around 800cfm.
Title: Re: carb selection
Post by: Blazin40s on April 17, 2012, 11:37:32 PM
Don't plan on going bigger yet, but u never know loll
Title: Re: carb selection
Post by: four_by_ken on April 18, 2012, 12:06:15 PM
I don't have an answer for your question as I don't know carbs at all.

But I wanted to add... buy/build for what you have now.  Don't do something that isn't the right answer for something that may come in the future.  Unless you are goingto build a bigger motor this summer, get a carb that suits your motor right now.
Title: Re: carb selection
Post by: Squirell on April 18, 2012, 12:26:27 PM
Quote from: four_by_ken on April 18, 2012, 12:06:15 PM
I don't have an answer for your question as I don't know carbs at all.

But I wanted to add... buy/build for what you have now.  Don't do something that isn't the right answer for something that may come in the future.  Unless you are goingto build a bigger motor this summer, get a carb that suits your motor right now.
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