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Topic: 84 TBI modifications

in Forum: C4 Engines


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84 TBI modifications (1/6)
 3/31/17 7:35pm
JBZ51
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Pottstown, PA - USA

Vette(s):
84 L83 Z51 4+3 Black with Graphite Leather


Joined: 12/21/2009
Posts: 53

Hi everyone, just finished rebuilding the engine on my 84. Literally everything is new except the block: heads, renegade intake, headers, all new internals. It's making a lot more hp now, but running lean. I am wondering if anyone has had their 84 TBI's bored out, and by who? I sent mine to Dr. Injector in Washington. He did nothing with mine and I almost had to sue to get my money back. Complete scam artist. Who have you used? Also are there any larger injectors that are a direct fit for the 84? I already upgraded to the 85 fuel pump. Please help with any TBI recommendations at all. And I want to keep it a Cross Fire. That's what makes it unique! Thanks in advance.
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Re: 84 TBI modifications (2/6)
 6/30/17 2:23pm
birdman11
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Vette(s):
91


Joined: 7/10/2013
Posts: 12

I have a Hypertech Performance chip Stage 2 for an 84 Corvette . I want $60 shipped for it. This did make the car faster. Let me know if you want it. Paypal ready. 

call me 443-856-5062


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Re: 84 TBI modifications (3/6)
 6/30/17 5:11pm
JBZ51
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Pottstown, PA - USA

Vette(s):
84 L83 Z51 4+3 Black with Graphite Leather


Joined: 12/21/2009
Posts: 53

Thanks for the reply but I already have the Hypertech stage 2.
Re: 84 TBI modifications (4/6)
 7/1/17 7:38pm
Black Shark
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Vette(s):
Black 1979 L-82 Black 1996 LT1 Black 1999 Coupe


Joined: 3/20/2009
Posts: 611

A throttle body bore allows air.....if it is running lean, you don't need any more air...you need more fuel.
A larger injector increases fuel (so does a correctly working injector).
 
What makes you think it is running lean?
 
Have you rebuilt the injector?
 
Re: 84 TBI modifications (5/6)
 7/8/17 1:35am
Hot Rod Roy
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Mission Viejo, CA - USA

Vette(s):
Yellow '84 Coupe


Joined: 3/18/2015
Posts: 74

Strats-N-Vettes said: What makes you think it is running lean?
 

Thumbs Up   I agree.

Have you had the car on a dyno?   Can you post results?   What is your fuel pressure at full throttle?


|UPDATED|7/7/2017 10:35:14 PM (AZT)|/UPDATED|


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Re: 84 TBI modifications (6/6)
 1/8/24 3:21pm
anniee75
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Mansfield, TX - USA

Vette(s):
1979 t top


Joined: 1/8/2024
Posts: 1

This guy is a scammer. He has hit all the Corvette sites and is now preying on the Chevy truck sites. He will get you for the chip and again on eBay for a pigtail to connect. 

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