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305 tbi parts swapped onto a carbed 350..?

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Old Dec 13, 2013 | 07:25 PM
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Elvis'92Bird's Avatar
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305 tbi parts swapped onto a carbed 350..?

I'm currently running a 305 tbi in my 1992 Firebird. I bought a carbed 350 with a mild cam, slightly lopey, unsure on the cam size. My question is, could I use the tbi intake, throttle body and distributor to convert it to 350 tbi using the 305s parts? Will a cam throw the computer off, is a tune recommended or neccesary? Thanks.

Any other tips would be greatly appreciated, actively looking up info, just looking for extra input.
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Old Dec 13, 2013 | 11:11 PM
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Re: 305 tbi parts swapped onto a carbed 350..?

Originally Posted by Elvis'92Bird
Icould I use the tbi intake, throttle body and distributor to convert it to 350 tbi using the 305s parts?
Will a cam throw the computer off, is a tune recommended or neccesary?
Whether it will run on a stock 350TBI tune depends on the cam specs

https://www.thirdgen.org/forums/tbi/...-350-swap.html
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Old Dec 14, 2013 | 06:15 AM
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Re: 305 tbi parts swapped onto a carbed 350..?

Just replacing a 305 with a 350, the tune needs to be different.

If the cam is even "slightly lopey", the tune will be REALLY REALLY off.

Best plan might be to put a KNOWN more appropriate cam in it instead of guessing around what might be an unsolvable problem, and get the chip, knock sensor, ESC module, and injectors, off of a 350 at the junkyard.
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