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

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Old 07-25-2011, 10:39 PM   #1
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Car: 1992 RS Camaro
Engine: 350
Transmission: 700r4

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TBI to Carburetor?

I have a 92 305 TBI..but can i simply switch it to a carburetor and add an intake to it?

IF so what do i need to do?
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Old 07-25-2011, 10:43 PM   #2
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Car: 89 Chevrolet Camaro RS
Engine: TBI w/EBL Flash
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Axle/Gears: 10 bolt 3.42 zexel torsen

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Re: TBI to Carburetor?

remove intake, add desired intake. change distributor to HEI. Wire up. run fuel lines. fuel pressure regulator, carburetor, disconnect ecm, sensors, etc. and some other things its been asked before so

why though?
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Old 07-25-2011, 10:46 PM   #3
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Re: TBI to Carburetor?

well because i figure it run better AND why search when u can post duhhh
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Old 07-25-2011, 11:13 PM   #4
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Car: '87 Camaro
Engine: '92 Carb'd 350
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Re: TBI to Carburetor?

You will need a geometry corrector, and a throttle // TV cable bracket
for which ever carb you use. These parts are carb specific.

Cost for these items depend on carb you use.
Lokar, Holley, Edelbrock, TCI etc... There are a few to choose from.
Call Summit or Jegs tech lines for the parts & specifics if you don't want
to spend a few minutes to search. There are a couple threads that go into
specifics. I'm on my iPhone & can't search the links any faster than you can
with a desk top or lap top or note book thing, or I woul do that for you.
We have a Summit stage 2 intake & Holley 650. PM me your email & I can
MMS you some pics of the Holley parts mounted.
Good luck
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Old 07-26-2011, 12:37 AM   #5
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Car: 89 Chevrolet Camaro RS
Engine: TBI w/EBL Flash
Transmission: 700R4 w/ Vigilante Stall Converter
Axle/Gears: 10 bolt 3.42 zexel torsen

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Re: TBI to Carburetor?

they frown upon the posting of topics that have been already covered. Good luck with your swap. Hope she runs better.
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4bbl TBI run by EBL with full roller setup coming 2014.
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Old 07-26-2011, 08:54 PM   #6
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Re: TBI to Carburetor?

Quote:
Originally Posted by JordanMonde View Post
well because i figure it run better AND why search when u can post duhhh
Because we've answered this question a gazillion times already, and we get tired of answering it. But once again ...

You need:

carb ($250 - $500)
intake ($150 - $300)
carb geometry corrector ($20)
HEI Dist ($125 - $200)
Throttle Bracket ($20 - $50)
Return-style fuel pressure regulator ($100)
Method to lock torque converter ($100 - $250)
Misc ($100)

So, as you can see, it's neither a simple process, nor a cheap process (minimum of almost $1000 to simply swap). And, in the end, you cut your fuel mileage in half, and boost your "performance" by ZERO.

Your TBI car's induction is not it's problem, it's problem lies with the fact that:

1) it's a 305
2) restrictive exhaust
3) terrible restrictive heads
4) restrictive intake
5) peanut cam
6) rear gears for mileage (2.73)
7) the entire "system" (ie motor, tranny, rear gears, and programming) was never designed for performance, but was designed for reliability and mileage

Swapping to a carb should be the last thing on your list. Exhaust for a bigger motor should be first thing, rear gears should be second, and so on, ONLY spending money on parts that will swap to another motor (ie 350) later down the road.
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Old 07-27-2011, 01:50 AM   #7
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Re: TBI to Carburetor?

The point of searching is so that people won't have to answer the same question over and over again, and also so that the website isn't covered with the same question. Plain and simple it just gets messy.
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Old 07-27-2011, 01:58 AM   #8
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Car: 1990 camaro RS
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Re: TBI to Carburetor?

car b cars suck in winter, use more fuel, are less reliable, and whats been posted already. i did a custom CAI on my TBI and ive actully squaked the tires on 1-2 shifts now, intake and exaust and rear end upgrade will make it faster and cost less then a swap to carb
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Old 07-27-2011, 10:43 AM   #9
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Car: 89 Chevrolet Camaro RS
Engine: TBI w/EBL Flash
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Axle/Gears: 10 bolt 3.42 zexel torsen

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Re: TBI to Carburetor?

I can bark the tires at will
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4bbl TBI run by EBL with full roller setup coming 2014.
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Old 07-27-2011, 05:36 PM   #10
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Car: 92 camaro rs-project car
Engine: 305 tbi
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Re: TBI to Carburetor?

fix it as the tbi and save tuning carb, timing, and bad fuel mileage. plus my tbi with a good exhaust engine back and a chip still runs well and doesnt need retuned for cold or hot. plus 24mpg to boot. i wenbt carbed for a while and got tired of it. now i get in and go. thats it. the ecm does all the rest. and i have 11" wide rear tires. and she will spin them. for a very short distance but she will do it.
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Old 07-27-2011, 07:23 PM   #11
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Car: 89 Chevrolet Camaro RS
Engine: TBI w/EBL Flash
Transmission: 700R4 w/ Vigilante Stall Converter
Axle/Gears: 10 bolt 3.42 zexel torsen

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Re: TBI to Carburetor?

wanna race?

Sounds good to me One92
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4bbl TBI run by EBL with full roller setup coming 2014.
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Old 07-27-2011, 07:57 PM   #12
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Re: TBI to Carburetor?

anytime!!!!!!! i figure im doing good when a single wheel peel will turn both wheels for a short time and kick out to the side. and that is a 3.23 gear.
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Old 07-27-2011, 07:57 PM
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