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You are watching: 1998 chevy silverado z71 5.7 specs


Just wondering what mine 98 z71 through the 5.7 350 is pushing because that horsepower.Like i said its a 1998 z71 4x4 through the 5.7L 350, throttle body spacer, cold wait intake, shorty headers, true duals, performance programmed through a hyper tech tuner.Any guesses ~ above what I"m working v would it is in great!
Stock, the 350 in that year had about 250 HP at the flywheel. Maybe you"ve included 20 HP at finest with those mods. I do know my old 97 Sierra really woke up once I did an exhaust swap top top it.
2007 Yukon1997 Sierra 6.5 RCLB
*Sold*97 Sierra 150003 Sierra 2500HD04 Silverado Duramax07 Silverado Duramax03 Sierra LQ4 Denali01 Silverado Duramax09 Silverado SCRB 2500HD LY698 Suburban2004 CCSB Duramax
Wikipedia has all the generations and also engine sizes detailed out and also from what i check out the 350 place out around 235hp.. However who knows through wikipedia!
Flowmaster at sight 40 twin side exitSuperchips flashpaq- 93 octane power tunedHigh circulation catsCowl induction hood
Is that the first or 2nd gen 350? I"m virtually positive my 97 to be rated at 255 HP... I know they went v the 2nd gen 350 in 96.
2007 Yukon1997 Sierra 6.5 RCLB
*Sold*97 Sierra 150003 Sierra 2500HD04 Silverado Duramax07 Silverado Duramax03 Sierra LQ4 Denali01 Silverado Duramax09 Silverado SCRB 2500HD LY698 Suburban2004 CCSB Duramax
Wiki is merely a compilation that people"s opinions, thoughts, quantative knowledge and guesses. Mine 1988 reg cab short stepside with TB injected 350 to be 9.0:1 compression and 210 HP. Perform not psychic the torque together that to be not important to me in ~ the time. Mine 1988 CrewCab (OLD body format <1982 thru 1987>) TB injected 350 to be 8.5:1 compression and also 185 HP. I think-but execute not psychic for sure (Wikipedia like) that the speech in my 1991 Suburban TB injected 350 to be 225 or 235.That didn"t aid did it?
Found this. It seems an ext in line through what i have an individual knowledge of, but I am not sure how accurate the Edmunds.com folks are.www.edmunds.com/gmc/sierra-1500/history.html‎CachedSimilarThis says background of the Sierra however it has actually the Chevrolet background included in it. According to them your horsepower was 250. FYI, the method of rating horsepower readjusted in about 1971/72 from net horsepower in ~ the flywheel come a rating that consisted of the engine through all its materials pulling it down-A/C, Alternator, strength steering, and some say also the driveline. This renders the rating effectively athe behind wheel horsepower or RWHP.
If my memory is correct, the new standard is v accessories however without drive line componnent. And no tranny.

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