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Removing TBI?



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Old 04-16-2009, 11:25 PM   #1
Flex Master
 
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Removing TBI?

I am thinking about removing my TBI from my 454 and throwing a carb on it instead. That way I can start building the motor and not have to worry about having the computer reflashed. I want to keep my the coil and distributor I have since I have the pro billet MSD distributor and MSD coil. Can I just add a power wire to go to the coil that is on iginiton or is there something else I need to do? Also will a carb bolt up to my stock intake or do I need a different one?
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Old 04-17-2009, 01:36 AM   #2
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Convert to propane and have all the benefits of TBI and none of the headaches of the Carb.

Sorry, don't have anything other than that to add.
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Old 04-17-2009, 06:10 AM   #3
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yes you can we did this on my younger brothers truck, just ran a hot from the ignition key and it worked fine. and you will need a different intake for sure. maybe different on BBC we did this on a stroker. and you will feel every one of your horses with a carb than a stupid tbi, i had more hell getting his tuned than it was worth. just slap a truck avenger on it and you'll never regret it.
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Old 04-18-2009, 08:32 PM   #4
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The TBI 454's used a cast iron Quadrajet intake, with an adapter on top for the TBI unit. Just unbolt it (and plug off the coolant hoses that run to the adapter) and you can bolt on a spread bore carb.

Does your current distributor have vacuum and mechanical advance? The stock TBI one didn't. The computer controlled the timing on it. If your MSD is a direct replacement for the stock TBI distributor, then you'll need to find out if it can be retrofitted with the proper advance parts.
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Old 04-20-2009, 04:45 PM   #5
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The only thing i seen that mess's up tbi injected motors are big cams. Not the bore size or compresson. Mainly just cams. Plus there's alot of people burning chips now.

Find you a carb thats not going choke on you when you hit a bump. Little alot of guys with carbs!
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Old 04-21-2009, 12:47 AM   #6
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Quote:
Originally Posted by RamRock View Post
The only thing i seen the miss's up tbi setup motors are big cams. Not the bore size or compresson. Mainly just cams. Plus these alot of people burning these things now.

Find you a carb thats not going choke on you when you hit a bump. Little alot of guys with carbs!
Put the down and step away from the keyboard...

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Old 04-21-2009, 06:49 AM   #7
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Quote:
Originally Posted by HarryH3 View Post
The TBI 454's used a cast iron Quadrajet intake, with an adapter on top for the TBI unit. Just unbolt it (and plug off the coolant hoses that run to the adapter) and you can bolt on a spread bore carb.

Does your current distributor have vacuum and mechanical advance? The stock TBI one didn't. The computer controlled the timing on it. If your MSD is a direct replacement for the stock TBI distributor, then you'll need to find out if it can be retrofitted with the proper advance parts.
early TBI 454s had a quadrajet intake, later ones had a 2 barrel TBI intake. I don't know what year they switched but it is pretty easy to spot the adaptor on the early ones.

As for the distributor, I read somewhere that the Computer can still be used to control timing. Might be worth looking into.
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