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Hi i'm new to the forum i searched an didn't come up with much on this and i need some help/advice. I have a 2000 z71 with a 5.3. I'm doing a rebuild an making some changes. I already have a comp thumper cam, .30 over hyper. pistons, Lt headers, and I was wondering if i could buy the flex fuel, injectors, rails, tb, an intake manifold off a 2011 5.3 on my 2000? And how much I would benefit from it.
Thanks Brandon
Yes, need an Xlink for the TB.
Its a 2000, he has the cable TB so no need for the xlink although you would need a 90mm cable style TB.Quote:
Originally Posted by pl4yboy
Good looking out. I didn't even notice he said 2000.Quote:
Originally Posted by graysilverado5.3
good luck with the hyper pistons... and like said before that TB wont work you will need to get a Drive by cable one, the edelbrocks are a decent price and a good piece
Is there something wrong with Hypereutectic Pistons?Quote:
Originally Posted by 408.Luke
yes, they dont like any kind of detonation, they wont hold nitrous if you ever want to go that route and you better have your tune spot on or it will be detrimental. had a friend that lost a motor in less than 20 miles from losing spark in a cylinder. IMO id sell them and get some forged and save the headacheQuote:
Originally Posted by 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?
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.Quote:
Originally Posted by 408.Luke
Your 2000 has a return style fuel rail and the NNSB does not.
So all you can use is the injectors and intake maifold
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??
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.
I liked the that nick Williams tb also. Iv'e seen good things said about it, here's another!Quote:
Originally Posted by ChevyLee
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
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.
Yes, you can use the 2011 5.3 intake with a throttle body to match.
No, you don't need an X-link. Even if your 2000 was DBW you wouldn't need it, it is for 03+.
Yes you can use the 2011 fuel rail, using a external FPR or corvette filter. Or you can modify your 2000 fuel rail to fit the 2011 intake.
Yes you can use the flex fuel injectors, you will need to splice on new pigtails or get the adapters. You must retune for this as well as the larger TB.
^Sums it up. But keep in mind, 07+ flex fuel injectors are only 30lb/hr, your current are 28lb/hr. The newer trucks compensate for e85 by upping fuel pressure. However GMT800 Flex fuel injectors run 34lb/hr.
Stock tb is 78 mm, and yes you're gonna need pig tails.