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Old 09-24-2008, 09:31 AM
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S-10 Blazer 4.3 Tbi To Carb ?

Can I Slide A 4.3 Tbi Into My 87 Blazer. What`s The Process To Change It To Carb ? Can I Do Headders ?

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Old 09-24-2008, 10:30 AM
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You`ll need a intake that accepts a carb, a fuel pressure regulator to get the fuel pressure down to around 5 psi. a distributor that has mechanical as well as a vacuum advance. Sure you can do headers, but when I looked into them for mine the cheapest set I found was $300, but now for some reason they go for much less. If your looking for performance out of a 4.3 then you should start with a 1996 and newer Vortec 4.3. The older one`s have horrible swirl vane heads on them and run out of breath at 3500 rpm. But don`t be confused here either, GM started using the name "Vortec" in the 80`s, but the real Vortec`s came in 1996. Or you can get a older 4.3 and bolt on 96 and later vortec heads, you`ll need custom studs as they came with "net lash" valves that are non adjustable. Then you just add a vortec intake which is around another $300. Sure you can tap into the performance side of a 4.3, but it`s not cheap as I already learned.

Last edited by DoubleVision; 09-24-2008 at 10:36 AM.
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