Will flex fuel parts work on 2000 5.3?

[5.3olbessyZ71]

Thanks for the heads up on the pistons man. I will definately look into a set of forged pistons.

One more question. So the injectors and fuel rails are a direct drop in? Just need a tune to run them? or will it just run rich in the meantime?

I looked into the 90mm TB from Edelbrock. Looks like a good product, are there any other manufactuerers you would recommend for a 90mm cable TB?

Also, what is the size of the stock 2000 5.3 throttle body?

[408.Luke]

Nick williams makes a really nice 90mm theres some other brands around like fast. For the injectors you may need to change injector pig tails someone else may want to chime in on that

[5.3olbessyZ71]

Nick williams makes a really nice 90mm theres some other brands around like fast. For the injectors you may need to change injector pig tails someone else may want to chime in on that

Thank you I will do some more looking around at TB's. Ill wait to hear from someone about the injectors. Thanks.

[J Industries]

Your 2000 has a return style fuel rail and the NNSB does not.

So all you can use is the injectors and intake maifold

[ChevyLee]

X2 on the nick Williams tb. I would go with that. You may want to get larger injectors, and you will need to upgrade your fuel system to feed the motor with e85. What are your goals??

[5.3olbessyZ71]

So I can run the manifold and the injectors "possibly need pig tails to even use the injectors", The fuel rails willn't work at all. And I have to buy a cable style 90mm TB, Do i have this straight? Correct me if i'm wrong.

Well you guys think this would be a worth while price effective upgrade for my 5.3? Or Is there better ways to go about upgrading these parts? I have a guy that will sell me the 2011 manifold, injectors, rails and Tb for $200. But he's selling all as a package deal. And the parts i can't use I would just sell off. What i'm tring to get at here is will the bang be worth my buck.

[5.3olbessyZ71]

X2 on the nick Williams tb. I would go with that. You may want to get larger injectors, and you will need to upgrade your fuel system to feed the motor with e85. What are your goals??

I liked the that nick Williams tb also. Iv'e seen good things said about it, here's another!

My goal was to price effectively upgrade to the injectors, rails, an manifold that came on flex 5.3. not so much for running e85. But I guess from what your saying that wouldn't be worth it?
"I'm here to learn"
Thanks Brandon

[kerrige]

I would use the fuel rails and convert to returnless the new injectors are 42lbs if I remember right. Don't expect huge gains but some good gains can be had on this swap. I want to say the ptm 90mm is the least expensive I have seen and they are nice to boot.