What is better a carb or TBI

[lunchmeat56]

In ya'lls opinion what is better a tbi or a carburetor? i was told this weekend to stay witt the fuel injection rather than putting a carburetor on the motor.

[T Man]

Stock for stock, efi is better, BUT if you do any aftermarket parts, you wi8ll see a huge increase over EFI.

[Tink]

Personally, I prefer carbed... I like the sound of a carb and the tune-ability of Holley carbs. BUT, carbs can be touchy... if you aren't familiar with them and tuning, they are not as forgiving as tbi is. Also, what are your plans for this truck? Street? Off-road? Drag? That would be something I would factor in to the decision as well.

[Sparky2263]

what are your plans for this truck? Street? Off-road? Drag? That would be something I would factor in to the decision as well.

Bingo

[4lowlife]

Any steep trail ridin' with a carbed motor may cause the engine starve for fuel. IMO

[rat]

I'l throw my .02 in to this. Having zero experience with carbs('cept on a Briggs and Straton)i like my fuel injection.

I don't think you will see any gains between a dialed in carb, and a dialed in efi setup. The big difference in my opinion is that the carb will require some tweeking. The efi will adapt to wear, and shouldn't require updated tunes after you get it set.

Annother thing to consider, is if you are really comfortable with carbs, then that may be the ticket. However, if you are more comfortable with FI, then i would deffinately go that route.

As far as changes, it sounded like you wanted to go with a much different camshaft(more agressive), and different intake manifold and heads. You CANNOT run this on the stock tune, it will run pig rich at idle, lean on the top end. Reason being large cam's don't make much vacum at idle, the stock computer thinks that there is load on the engine, so it dumps fuel. A well tuned motor won't have this problem. Keeping the lsa up to keep overlap down will help this problem, but that isn't to say you can't run a cam with a samaller lsa.
A diy tune, or www.tbichips.com can help you out here.

Stock for stock, efi is better, BUT if you do any aftermarket parts, you wi8ll see a huge increase over EFI.
Eh, i disagree.

[Tink]

Any steep trail ridin' with a carbed motor may cause the engine starve for fuel. IMO

Not with the Holley Truck Avenger Carb...

http://www.rockcrawler.com/techreports/holley_truck_avenger/images/tn/Side-View-Clear-Sight-Plugs.jpg

I LOVE mine.... it is great off-road, even on inclines of over 30 degrees, the carburetor never gives any indications of trouble. And on-road it is much smoother than the Quadrajet, especially when those secondaries open up.

[4lowlife]

Wow, it's an improvement from what I use to work on. (old 2 barrel on GM 305.) My last carbed vehicle was a '79 Caprice Classic. Glad it works for ya. How much cfm?

[Tink]

Mine is a 670cfm... running it on a 350. They also make a 770 and a 470. I have the 770 as well which will go on my 69 Chevy pickup.

[T Man]

I was refrencing agaist a 2.8 carb to tbi..didnt even think about the multiport setups on camaros and fieros

[lunchmeat56]

well i can put a tbi fuel injection of a '94 4.3, or a carb, or i could use the fuel injection off the 2003 motor but i'll have to buy a new wire harness and computer then i run into the problem of hooking the wire harness up to my truck. i don't know what to do. i want to put a cam amd put bigger pistons. i dont know

[Sparky2263]

I split the environmental stuff into its own thread in open forum. Ya'll can yuck it up all you want in there.

This is a technical thread.

[Sparky2263]

If I was going for a mid to max effort V6, I'd go carb. My CPI responds a bit differently but if I was going over 225 to the wheels with a 4.3, it'd have a carburetor on it.