A carburetor and a throttle body both feed air into the engine, but confusingly, a carburetor has its own throttle body. Here's where the two really differ.

This is the twin TBI setup attached to the top of the new cross-ram manifold. Note that fuel enters the left TBI unit first and then on to the right unit before being returned to the tank. Although ...

The controversy between carburetors and EFI has always been about complexity and price. Carburetors are simple—EFI is not. Carburetors are cheap—or at least cheaper than EFI. Those points have not ...

We have to admit, we were somewhat perplexed when we decided to apply the Holley Terminator Stealth EFI system to our modified 5.3L LS. Our bewilderment had nothing to do with the ability of the ...

Fuel delivery technology has come a long way in the past few decades. Yesterday's carburetors can't hold a candle to modern EFI systems in terms of driveability, economy and reliability. Changing ...