Holley tbi

[CRider]

I put a edelbrock tbi intake and the Holley tbi on last weekend and now it idles fine but around the block has no power at all. Can you fine tune it or do I need to let it learn? Or do I scrap the whole idea and go carburetor?

 

[Drunkcanuk]

I put a edelbrock tbi intake and the Holley tbi on last weekend and now it idles fine but around the block has no power at all. Can you fine tune it or do I need to let it learn? Or do I scrap the whole idea and go carburetor?

A little bit more information needed.
Like what year and model.
What transmission as well.
And what Holley system.

 

[Sean Buick 76]

What TBI part number? Did you have it tuned?

 

[CRider]

A little bit more information needed.
Like what year and model.
What transmission as well.
And what Holley system.

94 5.7 4l60 Holley 670cfm tbi

 

[Drunkcanuk]

94 5.7 4l60 Holley 670cfm tbi

So just the replacement throttle body and not something like the Sniper then.

 

[CRider]

So just the replacement throttle body and not something like the Sniper then.

Yes bolt on replacement

 

[99xcss4]

So just the replacement throttle body and not something like the Sniper then.

I think the op is talking about https://www.summitracing.com/search...rottle-body-style/throttle-body-injection-tbi

 

[Drunkcanuk]

I am NOT a genius when it comes to this, and I'm sure others may chime in.
So let's get some more information out of you to help them.
Why did you change TBI's?
Was there drivability issues before the change?
What's your fuel pressure at the TBI?
Is your parking brake on?

 

[Sean Buick 76]

It will need a tune to run correctly

 

[Schurkey]

94 5.7 4l60 Holley 670cfm tbi

Yes bolt on replacement

WHICH "bolt on replacement"? Holley makes a half-dozen with various injector capacities.

Theoretically, the 502-6 is a "direct replacment" for my '88 K1500 5.7L TH700. I have one, but have never installed it. I've heard that they don't run as seamlessly as the OEM throttle body.

OTOH, if you've installed a "replacement" throttle body for a V6, the injectors are going to be WAY wrong.

The throttle bores in the manifold are large enough for the throttle plates in the Holley TBI? Or are you using the Holley taper-bore gasket?