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#1
06-01-2005, 11:07 PM
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bored out 4.3
whats the liter of a 4.3 bored 30 over? how much hp may this make?
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95 jimmy. Vortec V6. 4.3 liter CPI. ,2.5" catco cat, 2.5" cat back with flowmaster muffler split rear., 40 street series, 2 12" audiobahns in custom box,K&N CPI intake system. 71 Mustang coupe- project car. stock 302 with Cobra intake, holley 650dp, afco racing radiator, headman headers, msd distributor, 2.5" from the headers.C4 tranny with shift kit, Mach 1 body lay out. 90 cav, 2.2 tbi, gas getter. 99 chevy s10 zr2, 6" lift, duel exhaust. 5 speed. 
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#2
06-02-2005, 07:43 AM
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Re: bored out 4.3
Very little on just boring out. You'd get more with a full professional port and polish.
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  95 s10 Blazer, EGR Mod, ZQ8 Steering box mod, 99 Center console shifter mod and more... See everything at www.pghconsulting.net/teal
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#3
06-02-2005, 10:40 AM
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Re: bored out 4.3
4.3L bored .030 over will be 4.37 Liter.
4.3L = 262.5 CID. 4.37L= 266.6 CID The practice of "boring .030 over" is not for the purpose of increasing displacement. It is done to true up the cylinder walls and provide a good surface for the new rings to slide on.
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