TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Road tested the 48mm TBI...

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Old Dec 12, 2001 | 11:29 PM
  #1  
V8Astro Captain's Avatar
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Joined: Jun 2001
Posts: 1,520
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From: 600 yds out
Car: Bee-Bowdy
Engine: blowd tree-fity
Transmission: sebin hunnerd
Axle/Gears: fo-tins
Road tested the 48mm TBI...

It works great. After some messing with the evap canister port I installed it and ran it a couple time across the bridge into Illinois.

After I installed the Holley intake, it felt like it had a turbo in there somewhere. It was kinda wierd. It lost some low end but right around 2000 rpm it would wind up and take off. Now with the bigger TBI it tugs a little more below 2000 rpm and has much, much better power on the highway.

I can definatly tell that this intake / TBI combo is a little much for my cam. Darn, looks like I gotta get a bigger cam! I'll prolly get an LT4 cam in the spring with all the roller goodies.

Here's some pics of the final product.
http://communities.msn.com/V8AstroCa...ds.msnw?Page=2
all the pics that are labeled body* are the new TBI.

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'92 Astro, GM crate 350, Holley Pro-Jection Intake, MSD 6AL, 3.42's, 2.5" exhaust, Flowmaster 40 2 chamber, B&M 2nd stage shift kit, 255 60 R15 tires on AR-727's, TBI Bored out to 48mm and Polished , Custom EPROM in progress
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Old Dec 12, 2001 | 11:45 PM
  #2  
Z28 Boy's Avatar
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Joined: Nov 1999
Posts: 1,069
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From: Charlotte, NC
Car: 1991 Camaro RS
Engine: GMPP 350 HO w/TBI
Transmission: 700R-4
Axle/Gears: 10-bolt w/3.73s
looks good man...

-brian

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1991 Camaro RS
GMPP 350 HO crate engine w/TBI
Homepage z28boy@twcny.rr.com AIM - "Z28 Boy"
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