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

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Old Jul 30, 2006 | 08:43 PM
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Fast355's Avatar
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
I have been playing in the garage again!

Well it seems like I do this about once a month. Here is what I have played around with over the past 2 weeks.

Friday night I made a few videos to show off the 350 TBI in the 5,300 lbs G20. Ended up being decent.

YouTube - Chevy Van 350 1

(Ignore the PS whine and my passenger (younger brother) saying " YOU ALMOST MISSED HIM" (A pickup on the service road was doing about 70 and I had to stop)

YouTube - Chevy Van 350 2

Somehow when I went for the signal, the camera got stopped and started in close succession.

YouTube - Chevy Van 350 3

Another on-ramp with more power steering whine and my passenger complaining about the traffic. I really couldn't open it up through more than 1st gear due to the economy car that I would have run over if I had.

Here are some pictures, they are worth 1,000 words. Basically I did my magic to a set of swirl ports and installed a L03 roller cam in place of the Ramjet one. Makes tons more low-speed torque, but falls flat on its face at 4,000. I actually like it better, I think. FWIW, WOT shift points are at 4,500 RPM.



My open element being traded out (took a V6 camaro air scoop, end from a caprice air cleaner snorkel, and my stock V8 van air cleaner. Works as an effective CAI now, much quieter than the open element under load





I promise, I didn't rob it from a V8 car, I got it from a 1983 Camaro with a carbed 2.8. Wrecked at that.

Oh yeah, I put some cool wire looms on it too, cheap as well.


Last edited by Fast355; Jul 31, 2006 at 01:03 PM.
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Old Jul 31, 2006 | 07:46 PM
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Engine: 377 LSX
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Nothing like pegging the speedo with your left blinker on the whole way
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Old Jul 31, 2006 | 08:41 PM
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Fast355's Avatar
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Originally Posted by ShiftyCapone
Nothing like pegging the speedo with your left blinker on the whole way
It was only on from 65-90!
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