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305 TBI TO 350 CARB OR TBI

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Old Sep 8, 2015 | 05:21 AM
  #1  
Wylecoyote08's Avatar
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From: Michigan
Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:73
305 TBI TO 350 CARB OR TBI

So, another motor swap question.

I'm getting a 350 from a buddy of mine that needs to be rebuilt. It's from and old chevy blazer and it is a carbed motor. I am putting it into a 92 Camaro RS. it has the chip in the key to. What all would I need to do to swap this motor out and leave it carbed. Is it easier leaving it carbed or to just swap the motor and put a tbi on it?
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Old Sep 8, 2015 | 05:43 AM
  #2  
Wylecoyote08's Avatar
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Posts: 37
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From: Michigan
Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:73
Re: 305 TBI TO 350 CARB OR TBI

If I keep my tbi system, will it bolt up to my 350? I know I will have to change the injectors and probably get a 350 computer and all the electrical goodies
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Old Sep 8, 2015 | 07:06 AM
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dmccain's Avatar
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From: South Ms
Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: 305 TBI TO 350 CARB OR TBI

Your TBI manifold is made to fit centerbolt heads so there a knock against using the TBI right off the bat unless you want to find some centerbolt heads. Picking up a set of used ones shouldnt be hard they made hundreds of thousands of em from 187 58cc castings, 76cc 193 castings , 64 cc 083 castings(which are pretty good heads) on up to the cream of the crop 64cc Vortec castings but then you will need to get a vortec specific manifold for the TBI. I may would just go carb but theres definitely pros and cons for both.
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Old Sep 8, 2015 | 08:26 AM
  #4  
Wylecoyote08's Avatar
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Joined: Jun 2015
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From: Michigan
Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:73
Re: 305 TBI TO 350 CARB OR TBI

Originally Posted by jacksons89
Keep the TBI system, you will just be swapping out the block with heads on it. You will need the following to make the 350 block perform right. 350 TBI knock sensor, 350 ESC module , 55-65 lb injectors , and a chip. You can still use the stock 305 ECM.
I suppose I should have looked at this before asking what I asked you about keeping the stock stuff after the chip haha. Like the esc and knock sensor. I knew about the injectors tho. But wasn't too sure on the ecm. I appreciate it a lot. Thanks for the info
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