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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Gusgusa1 on September 29, 2013, 10:34:44 pm

Title: 305 carb to 350 tbi swap
Post by: Gusgusa1 on September 29, 2013, 10:34:44 pm: I did some searching already but feel free to direct me. I have an 84 k10 4speed I plan to swap out the 305 carb for a 1987 350 tbi.

Question is will it be a straight swap aside from the harness and ECM. Do accessories like distributer and water pump interchange? What about mounts?
Title: Re: 305 carb to 350 tbi swap
Post by: Gusgusa1 on September 29, 2013, 10:38:34 pm: Sorry and the fuel pump. I believe they are located in the tank for the 87 but on the firewall for the 84 can I use the same one or upgrade it to keep it on the firewall?
Title: Re: 305 carb to 350 tbi swap
Post by: Fairlane514 on September 30, 2013, 05:49:55 am: Never heard of a factory fuel pump on the firewall. For the TBI you will need an electric pump.
Title: Re: 305 carb to 350 tbi swap
Post by: Gusgusa1 on September 30, 2013, 08:42:39 pm: Does anyone know about the water pump and distributer and alternator. If I can keep down the cost by reusing these it would help a lot.
Title: Re: 305 carb to 350 tbi swap
Post by: Captkaos on October 01, 2013, 07:25:07 pm: The distributor is specific to the TBI. If it is running non serpentine water pump won't matter.

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Title: Re: 305 carb to 350 tbi swap
Post by: Stewart G Griffin on October 04, 2013, 10:07:27 pm: If swapping to TBI, i would call these guys and do it right:

http://howellefi.com/
Title: Re: 305 carb to 350 tbi swap
Post by: Captkaos on October 05, 2013, 11:19:46 am: Howell only does harnesses, if you already have a working one why buy a new one?

Get everything from a donor and it should work.
Title: Re: 305 carb to 350 tbi swap
Post by: Gusgusa1 on October 05, 2013, 11:36:32 am: Sorry I should have mentioned the motor I am getting is coming with the harness and computer. Thank you for the info so far