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1997 chevy vortec 350

This is a discussion on 1997 chevy vortec 350 within the Performance forums, part of the General Discussion category; I have a 97 silverado that i am rebuilding the motor in. i am having trouble figuring out just what ...

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    1997 chevy vortec 350


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    I have a 97 silverado that i am rebuilding the motor in. i am having trouble figuring out just what to put in it to give it 350 to 400 horsepower and at the same time i want to keep the stock spider fuel injection intake. the motor has just been boiled and the cylinders where honed at a machine shop. the stock heads have also been freshened up but only to stock specs. i would like for the engine to safely be able to turn 6500 to 7000 rpms. please help with any info you have about the 97 chevy vortec 5.7 liter engines. I am clueless as to what kind of parts are good for high rpm motors and what kind of cams will produce good results and also be compatible with a supercharger or turbo in the future. thanks for all the help.

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    Need to be bigger!!!!!!! speedjunkie's Avatar
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    Re: 1997 chevy vortec 350

    Are the heads done or could you get them to handle more lift? That is the problem with the vortecs. The heads only handle up to .480 of lift, I think. How big of the motor are you going?
    Damian

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    Re: 1997 chevy vortec 350

    Quote Originally Posted by oilismyblood89 View Post
    . . .i am having trouble figuring out just what to put in it to give it 350 to 400 horsepower and at the same time i want to keep the stock spider fuel injection intake. . .i would like for the engine to safely be able to turn 6500 to 7000 rpms. . .
    Those 2 are not gonna happen. You're not a college student on a budget are you?
    Quote Originally Posted by Quyonmob View Post
    Straight pipes are for peckerheads. . .
    '98 K1500 ECSB 5.7, 4L80E, 14BSF, 4.10/G80, 7,200# GVW springs, 8600# GVW calipers/pads, 411/EFI Live, TB mod, UDs, block, crank, 285s, and a lot of stuff on the shelf.

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    Re: 1997 chevy vortec 350

    I am not a college student just looking to really beef up my engine without changing it to carburated. i have an interest in engines and would love to learn as much as i can about how to make horsepower.

    the heads have not been changed from stock lift and i reallyi cant answer the question on what they are now but thanks for the advise that i need to get more lift. Should i possibly buy some better heads then the vortec heads? if so will they still match up with my intake?

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    Re: 1997 chevy vortec 350

    Quote Originally Posted by speedracer326 View Post
    Those 2 are not gonna happen. You're not a college student on a budget are you?

    Quote Originally Posted by oilismyblood89 View Post
    I am not a college student just looking to really beef up my engine without changing it to carburated. i have an interest in engines and would love to learn as much as i can about how to make horsepower.

    the heads have not been changed from stock lift and i reallyi cant answer the question on what they are now but thanks for the advise that i need to get more lift. Should i possibly buy some better heads then the vortec heads? if so will they still match up with my intake?
    Why are you so set on using the stock intake and spider injector?
    98 Chevy RCLB K1500, 5.7, 4L60E transgo shift kit, vette servo, 14 Bolt SF, 3.73s, Blackbear 89 tune

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    Re: 1997 chevy vortec 350

    I have no knowledge of carburators or how to adjust them for temperature changes and also i have a rebuilt transmission in it which is all computer. I wouldnt even know where to start to convert the whole truck away from the computer.

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    Re: 1997 chevy vortec 350

    Quote Originally Posted by oilismyblood89 View Post
    I have no knowledge of carburators or how to adjust them for temperature changes and also i have a rebuilt transmission in it which is all computer. I wouldnt even know where to start to convert the whole truck away from the computer.
    No one suggested getting rid of the EFI...

    Putting a carb on an efi motor is retarded imo
    98 Chevy RCLB K1500, 5.7, 4L60E transgo shift kit, vette servo, 14 Bolt SF, 3.73s, Blackbear 89 tune

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    Re: 1997 chevy vortec 350

    ok so your suggesting putting a different type of fuel injection on it? Im all ears. What are you thinking?

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    Re: 1997 chevy vortec 350

    The marine version of the Vortec intake allows you to use larger injectors, meaning you can flow more fuel. I believe Edelbrock makes an intake similar to the marine version as well
    98 Chevy RCLB K1500, 5.7, 4L60E transgo shift kit, vette servo, 14 Bolt SF, 3.73s, Blackbear 89 tune

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    Re: 1997 chevy vortec 350

    will i have change the fuel lines at all?

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    Re: 1997 chevy vortec 350

    no
    98 Chevy RCLB K1500, 5.7, 4L60E transgo shift kit, vette servo, 14 Bolt SF, 3.73s, Blackbear 89 tune

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    Re: 1997 chevy vortec 350

    ok thanks for the advice on the intake.

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    Re: 1997 chevy vortec 350

    Quote Originally Posted by mainechev View Post
    no
    Yes he would. The ends are different on the marine intake. It's still a good option though, without the spiders in there they tend to flow better. I'd leave the Vortecs in there and lose the aspiration to spin the 350 up to 7k, that's expensive. Have you tried a basic search? There's a plethora of information on this topic.
    Quote Originally Posted by Quyonmob View Post
    Straight pipes are for peckerheads. . .
    '98 K1500 ECSB 5.7, 4L80E, 14BSF, 4.10/G80, 7,200# GVW springs, 8600# GVW calipers/pads, 411/EFI Live, TB mod, UDs, block, crank, 285s, and a lot of stuff on the shelf.

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    Re: 1997 chevy vortec 350

    get years heads machined and some ls6 beehives comp 787 retainers . and a lt4 hot cam with 1.6 roller rockers . with a tune and long tube headers you will have a nice 375-400 hp . with the stock efi
    1996 ecsb z71 3.73 g80 5.7 b&m shift improver , vette servo , 30k cooler , 7 quart huges trans pan circle d 2800 stall,160tstat ,k&N intake , ceramic coated eddlebrock headers. true dual flowmasters 2.5 inch and H pipe black bear 91 tune .and a frantz bypass oil fitration kit, 125 hp wet nitrous

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    Registered User mainechev's Avatar
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    Re: 1997 chevy vortec 350

    Quote Originally Posted by speedracer326 View Post
    Yes he would. The ends are different on the marine intake.
    My bad. I assumed they were the same. We all know what happens when you assume..
    98 Chevy RCLB K1500, 5.7, 4L60E transgo shift kit, vette servo, 14 Bolt SF, 3.73s, Blackbear 89 tune

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    Re: 1997 chevy vortec 350

    Well it's far from the end of the world to redo a few fittings, not exactly the most difficult part of the swap but worthy of mentioning nonetheless.
    Quote Originally Posted by Quyonmob View Post
    Straight pipes are for peckerheads. . .
    '98 K1500 ECSB 5.7, 4L80E, 14BSF, 4.10/G80, 7,200# GVW springs, 8600# GVW calipers/pads, 411/EFI Live, TB mod, UDs, block, crank, 285s, and a lot of stuff on the shelf.

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    Re: 1997 chevy vortec 350

    where is a good place to get those parts and thank you that is exacly the kind of advise i was looking for and the heads have been machined but i kept them at stock

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    Re: 1997 chevy vortec 350

    Can't remember the site for the marine intake of the top of my head. PM member Pauly on here he should be able to help you out
    98 Chevy RCLB K1500, 5.7, 4L60E transgo shift kit, vette servo, 14 Bolt SF, 3.73s, Blackbear 89 tune

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    Re: 1997 chevy vortec 350

    how bout you 6789olds do you know a good place to look for the parts you suggested

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    Re: 1997 chevy vortec 350

    You're not going to acheive your goals with what your limiting factors are. Stock heads, intake and bore are going to give you a stock motor plus whatever a mild cam will give you.

    You can supercharge it in stock form for a relatively easy bolt on kit that will cost some money but be pretty reliable.

    You're not going to spin anything over 5500 rpm's with the stock computer. As far as I know, no tuners have been able to raise the stock rev limiter on these black box computers. Changing it to the 410 computer from a newer style truck will give you that option as well as a lot more tunability. That conversion and tuning especially with a cam and whatever else you do will take a good amount of knowledge and equipment to successfully pull off.

    By the time you get heads, cam, intake, machine work and whatever else you end up doing you will easily have in the neighborhood of 4k invested and a nightmare of tuning. Trust me, I learned the hard way. For less money and approx the same difficulty level of successfully acheiving your goal, you could swap to a ls series 6.0 and have a reliable, upgradable powerplant. Thats what I would have done myself. I know you're motor is already getting machined, but you should think about what's ahead of you.
    89 RCSB Dana 60/14 Bolt 4-lnk frnt/rr, 39.5's/14" Welds, 5.13, Truetrac/Detroit, AEM Intake, Holley 670 TBI, Holley Mnfld, Shorties, 40 series, no cat. 98 2wd 355, lt4 hotcam, 1.6 rllr rckrs



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