Bought a tbss intake for my 03 silverado 5.3 and was wanting to no how the fuel rails will hook up or which ones I need to buy so I can hook them up

 

Use either your factory rails with modified crossover and mounting, or use the TBSS rails with modified return line using either a regulator or Corvette fuel filter. Either one benefits from a tune but using the TBSS rails will require a tune because it is not using a vacuum regulator anymore.

 

Finally someone helped thought no one was. But I was Going to go with the fast Fuel rail and didn't no what to buy

 

I just did my swap a week ago on my 03. I used the TBSS rails so I'm not familiar with the Fast rails or what they need. Everything else about the swap though is still fresh in my head.

 

See I was going to go with just use the stock rails but they look like carp. I sent my intake off to get shaved and cleaned up instead of the own look. Another reason to leave the stock rails

 

This is what I did

 

Who shaved the intake for u

 

I have the tbss intake on my 00 silvy, I swapped over to AN line and fittings, and corvette filter/regulator (waste of money imo) I would leave stock filter and use a regulator for the return/pressure. But you don't need a tune for the new intake as the FPR on the old intake uses engine vacuum. I also have a stealth 340 pump in the tank as we speak. But the intake alone will not rip off your pants you need more supporting mods to make it worth while

 

O I'm not running it on a stock motor is going to have enough mods to tell a difference. But did yeah have any trouble modified the brackets to make the aftermarket rails work right.

 

Nope I used the factory tbss rails.... I'm getting ready to swap over to FAST rails whenever my truck comes back from paint. But you can get rails for the factory manifolds I believe