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Carb swapped tbi

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Old Aug 11, 2019 | 07:32 PM
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From: Pittsfield Maine
Default Carb swapped tbi

Hi again everyone,
I’m finally getting around to swapping my motors over in my 76 stingray and was curious about the timing. The motor going in is a 1988 tbi 350 thats been carb swapped.
Can anyone tell me if I set it by the tbi specs or by the 1976 specs?
I have a chiltons and this is what it says for settings
1975-76 165hp(mine is actually listed as the 180hp which this book says is 77 only?)
start degrees @ rpm-0@1200
vacuum advance: start degree @in. Hg 0@4
End degree @ in. Hg 18@12
This info is the same for the 1977 180hp as well.
Ps. Can someone please explain this process or like me to a video?
Thanks you all for the help.

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Old Jan 1, 2020 | 01:58 PM
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All I can add is that the tbi heads are swirl port and will want different timing, your total needs to be less than a conventional older smog chamber and likely a slower rise in timing also.

Perhaps start with the tbi specs and move slowly from there. $.02
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