1st Generation S-series (1983-1994) Tech Discuss 1st generation S-series (1983-1994) general tech topics here.

fuel pump

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Old Apr 11, 2009 | 11:30 PM
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will the fule pump out of a 1993 vortech work on a 1990 non vortech
 
Old Apr 12, 2009 | 02:05 PM
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Considering that all versions of the 4.3L use the vortec cylinder head design. I assume you are talking about a using a fuel pump from a CPI engined vehicle in a TBI engined vehicle.

No. Totally different application and pressures involved. The CPI motor requires 55-60psi while the TBI motor requires only 8-10psi.
 
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