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305 to 350 swap

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Old Mar 10, 2004 | 09:23 PM
  #1  
ringo234's Avatar
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Joined: Feb 2004
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From: So Cal
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
305 to 350 swap

Can anyone tell me just what all is involved in doing this swap?

Will I need to replace the Computer? Is it going to smog legal in California?

Feel free to provide any information you think revelent.

Thanks in advance
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Old Mar 10, 2004 | 10:03 PM
  #2  
MCas7's Avatar
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Joined: May 2003
Posts: 484
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From: Lisbon, NH
I suggest you do a search on this site for answers to this question. I'm sure it has been answered a million times.
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Old Mar 10, 2004 | 10:27 PM
  #3  
Toxinz's Avatar
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Joined: Dec 2003
Posts: 192
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From: Va
Car: 92 camaro
Engine: 355
Transmission: 700r4
I just did a v6 on my 92 camaro and had a 305 junker car i took alot of things from. You can use all the serpentine brackets, intake, tbi, wiring harness, computer, motor mounts, air cleaner, radiator, and trans. You can use a lot of things that are already on your car. However you will need 350 sensors and have to get fuel injectors that are bigger than the 305 otherwise it will run lean. You need to get your computer reprogrammed which usually runs about 350 to 450. I don’t know if you can use the 305 exhaust manifolds. I don’t thinks so. I just bought headers. Anyways it’s an easy swap compared to a v6 conversion. You dont have to move anything such as the motor mounts ect. You should just be able to plug and play. Just the little things like sensor and such needs to be changed.
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Old Mar 16, 2004 | 12:59 PM
  #4  
Ross1577's Avatar
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Joined: Jan 2004
Posts: 20
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From: Kansas
Car: 1985 Trans Am
Engine: 350 TPI
Transmission: 700R4
What year is the car & is it TBI or TPI?
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Old Mar 16, 2004 | 07:34 PM
  #5  
ringo234's Avatar
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Joined: Feb 2004
Posts: 1,581
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From: So Cal
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Originally posted by Ross1577
What year is the car & is it TBI or TPI?

My Camaro is an 89 RS with TBI.
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Old Mar 16, 2004 | 09:57 PM
  #6  
Toxinz's Avatar
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Joined: Dec 2003
Posts: 192
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From: Va
Car: 92 camaro
Engine: 355
Transmission: 700r4
My car is a 92 camaro I put a 355 tbi motor in it. I had a junk 1989 305 tbi car that i used alot of parts from. Such as the wiring harness, computer, distributer, intake etc. If you have any questions ask away.

Last edited by Toxinz; Mar 16, 2004 at 10:00 PM.
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Old Mar 16, 2004 | 11:25 PM
  #7  
Ross1577's Avatar
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Joined: Jan 2004
Posts: 20
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From: Kansas
Car: 1985 Trans Am
Engine: 350 TPI
Transmission: 700R4
I don't know if I can help too much. I just did a 305 to 350 TPI swap
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