Throttle Body's Revisited

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Jun 8, 2000 | 06:21 AM

82F100SWB

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Post Fiend

Joined: Jan 2000

Posts: 5,330

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From: Dryden, ON, Canada

Throttle Body's Revisited

Jan 17, 2001 | 12:57 AM

traildawg

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Joined: Jul 2000

Posts: 429

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From: Lima, OH

Throttle Body's Revisited

I remember reading a few posts on here way back about going to a larger throttle body, and how most of the aftermarket pieces wouldn't work w/o extensively modifying the plenium. Did anyone ever find out if a stock 5.0L or 5.8L throttle body would work?

Also, what's the final word on changing to the 19lb/hr injectors with an adjustable pressure reg.? I'm really considering this,
so if someone (Eddie???) could fill me in on any trouble spots in this conversion, it would be greatly appriciated.

TrailDawg
1993 F150 2WD
4.9L-Auto
Pro-Comp Stage-2 6" lift
Auburn Pro-Series Diff. w/4.10:1 gears
35x12.50x15 General Grabber MT's
Custom PreRunner front and rear bumpers

Jan 17, 2001 | 05:36 PM

paulg

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Joined: Jun 2000

Posts: 464

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Throttle Body's Revisited

Traildawg I was the one who decided to try this. So far I have been unable to fit a 5.0 or 5.8 throttle body on the 4.9 intake. One would have to bore out to much material from the intake plenum to get this to work. However I am currently working on the plans as to how I can possibly create a bigger intake plenum I can weld onto the stock intake manifold after cutting of the stock intake plenum. Sounds kind of wordy don't it?! Basically what I am trying to do is cut off the part the stock TB mounts to and replace it with a "bigger" version so the 5.0 or 5.8 TBs can fit on. In essence make the 2 tubes on the intake plenum bigger. Even though I might be able to do this, there is a problem. I am absolutely sure this will cause a decrease in manifold pressure or vacuum. I don't know what effect this will have on the engine. More than likely the engine will gain horsepower and loose torque and set of abunch of blinking diagnostic lights. So as soon as I can find a sacrificial intake and get the wielding gear I need, this project has been placed on indefinite hold.