JavaScript is disabled. Because that a far better experience, please permit JavaScript in her browser before proceeding.

You are watching: 1998 chevy silverado 5.7 vortec 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 v the 5.7L 350, accelerator body spacer, cold waiting intake, shorty headers, true duals, power programmed through a hyper tech tuner.Any guesses on what I"m working with would it is in great!
Stock, the 350 in that year had around 250 HP at the flywheel. Probably you"ve included 20 HP at best with those mods. Ns do know my old 97 Sierra really woke up as soon as I did an exhaust swap ~ above 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 engine sizes listed out and from what i watch the 350 place out about 235hp.. However who knows with wikipedia!
Flowmaster supervisor 40 dual side exitSuperchips flashpaq- 93 octane performance tunedHigh circulation catsCowl induction hood
Is the the very first or second gen 350? I"m virtually positive mine 97 to be rated in ~ 255 HP... I understand they went through 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 simply a compilation that people"s opinions, thoughts, quantative knowledge and also guesses. My 1988 reg cab brief stepside through TB injected 350 to be 9.0:1 compression and also 210 HP. Carry out not psychic the torque as that to be not important to me at the time. My 1988 CrewCab (OLD body style <1982 thru 1987>) TB injected 350 was 8.5:1 compression and 185 HP. Ns think-but execute not psychic for sure (Wikipedia like) that the horsepower in mine 1991 Suburban TB injected 350 to be 225 or 235.That didn"t aid did it?
Found this. It seems an ext in line with what ns have an individual knowledge of, however I am no sure just how accurate the Edmunds.com folks are.www.edmunds.com/gmc/sierra-1500/history.html‎CachedSimilarThis says background of the Sierra yet it has actually the Chevrolet history included in it. Follow to them your horsepower to be 250. FYI, the an approach of rating horsepower changed in around 1971/72 from network horsepower at the flywheel come a rating that included the engine with all its components pulling that down-A/C, Alternator, power steering, and also some say even the driveline. This makes the rating successfully athe rear wheel speech or RWHP.
If my memory is correct, the brand-new standard is with accessories however without drive line componnent. And no tranny.

See more: How Many Oxygen Atoms Are There In 2 Formula Units Of Al2(So3)3?


This is an larger thread, you may not obtain a response, and could be reviving one old thread. Please think about creating a new thread.
*
Continue v Google
A forum community committed to Chevrolet Silverado and GMC Sierra pickup owners and also enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!