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#1
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91 4.3l
what the diffence in ho motor and standard motor in astro van cpu, or cam, etc ?
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#2
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Re: 91 4.3l
High Output uses CMPFI central muti-port fuel injection-a 61 psi fuel pressure requirement- recognizable by the intake manifold and air cleaner set-up- the standard uses a throttle body- lower fuel pressure and air cleaner right on top of engine --- after '93 all M-vans were high output......a much better set-up.....
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Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles- |
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#3
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Re: 91 4.3l
ty 4 your reply i am familar with the cmpfi i have a 94 s 10 blazer im asking about a 91 non vortec balance motor
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