Our Community is 940,000 Strong. Join Us.


97 z28 needs more speed


fatboys57
04-06-2003, 03:08 AM
i have a 97 z28 5.7 liter lt1 auto trans. iwant to make it a low 12 second car without spending to much :confused: can u guys give me some suggestions

Self
04-06-2003, 03:56 AM
How much is "too much"? First and most important question.

Misundaztood
04-06-2003, 02:14 PM
The cheapest out of those 3 is nitrous. However, I'd stroke. Imho, a much more sastifying feeling than the other 2.:cool:

fatboys57
04-06-2003, 02:49 PM
ya how much will boring it out cost :confused:

pennyho
04-06-2003, 10:12 PM
i would pick the super charger it very good and safe for your engine.

-The Stig-
04-07-2003, 06:57 PM
Technically you dont have to bore it over any... if you go with the stroker idea...

With a 400ci SBC Crank Yammed in it should be somewhat like this.
Stnd Bore = 377ci
.030 = 383ci < What I have in my car... 425hp/440tq Go Stroker!
.040 = 385ci
.060 = 388ci

Now, I could be wrong but thats what i've learned. I'd look into it more with a professional when you start your project for more info.

I say, if you're pulling the motor to rebuild it for the stroker... why not replace all the internals with Forged components then later on go with a Supercharger and have best of both worlds? Also... upgrade to some bigger heads and like a LT4 Cam and you've got an easy easy 360+hp all motor (thats with Intake, Headers and Exhaust helping out) plus whatever the Supercharger puts out... 12 seconds isnt hard to reach at all. :D

I'd be it be near 450-460hp with low Psi... of course thats just speculation and a bit of ricer math too! :D

swedish
04-08-2003, 12:53 PM
here's the rundown:
Nitrous: To put you in the 12 sec range it'll run around $1,500 set-up right, but this will be something to use sparingly, using it everyday will really up the wear and tear on both the engine and tranny.

S/C: Best bet if you go this route is a centrifugal (maybe aftercooled) unit pushing 6-9 psi. Price varies between the various popular makers (Powerdyne, ProCharger, ect.) so if this sounds good (daily reliable power) then look around.

Stroker: If you plan to keep adding power (like if you think you're gonna want 11- mid-high 10's) this is the best bet, however, if you're gonna stick with street driven 12's you'll be amazed at how much you spend on gas, and you're probably better off with a s/c.

BigJustinZ28
04-08-2003, 01:26 PM
i'd go with a supercharger myself , quick easy power , safer than NOS imo and why rebuild a motor before its due ? strap a s/c on it and if one day you need to go into the bottom end do the stroke !!!

Gripenfelter
04-13-2003, 12:45 PM
Cost me $7000 u.s. to do my stroker but the power is always there.

You will need a high stall converter, suspension mods, exhaust, and headers as well if you do the stroker.

Cheapest way is Hooker Longtube headers, Mufflex Y-pipe, Cold air intake, BFG drag radials, Spohn LCAs, relocation brackets, and a 100 shot of juice.

Make sure you get an adjustable unit that slowly injects the nitrous so you don't shock the motor.

pennyho
04-14-2003, 05:52 PM
do any of you think the new chevy ss concept would be a real car? btw do any of you like how the looks are, i kind of do just not the 4 door idea.;)

TexasF355F1
04-14-2003, 06:10 PM
NOS is stupid. And a good way to blow your engine if its not built to handle it. I say, cat back exhaust, headers, power programmer, intake, and supercharger.

Gripenfelter
04-15-2003, 08:31 AM
The only people blowing their cars up with Nos are the ones that don't know what they're doing.

You can just as easily run lean on boost and toast your motor.

New Nitrous kits have safety features like a cut-off switch in case your fuel psi drops and also a modulator to slowly inject the nos from 0-100% jetting so it doesn't turn on all at once and shock your motor.

HiTechRedNeck
05-04-2003, 03:19 PM
TURBO TURBO TURBO. Got the money ? Here is the way to go.
Single Turbo (http://www.ls1motorsports.com/)


707 rear wheel HP
1/4 9.93 secs.

W00t. Thats the bomb. Drive all day and race at night.

Scott 02
05-04-2003, 04:52 PM
Hell ya! Turbo all the way. I would bore it, add the 400 crank and make it a 383, then the Turbo.:D

HotRoder
05-11-2003, 10:41 PM
GO for a new high perfomance Camshaft and rocker arms, this would be 1/4 the amount of a vortech supercharger and yet around the same gain in HP if you get the right CAM.

DVS LT1
05-13-2003, 05:12 PM
Automatic eh?

One way or another you will definitely need a high stall torque converter, 2800 - 3500. The higher the stall = the bigger the cam you will be able to run. Even your stock(presumably) LT1 Z28 will feel pretty different being launched off the line at 3000 RPM (this signle mod will really help your 60ft times)

Another thing you should not gloss over is gears. I know you want 12's fast and cheap, but putting in a 3.73 setup on your automatic will likewise prep your Z28 to be a quarter mile warrior. You may not do this mod now but trust me you will eventually!

NOS, blowers, cams - its a tough call. I agree with everyone else who said to be carefull with whatever you do. Remember, if you beat the shit out of your car enough times something WILL break. You add 100 HP and continue to beat it and something is gonna break sooner, and harder.

I've never been a big fan of turbocharging, cause turbocharging leads to excessive heat which eventually lead to cracking - bottom line (run it hard and watch them manifolds split!) If you're going to do forced induction go with a blower. Procharger offers single and dual intercooled superchargers which will allow you to run anywhere from 9-20 PSI depending on compression and application - better than turbo but over time you'll still be blowing your seals (a fact of forced air induction).

You want 12's now - go for it! - but watch it. Personally, I'd add a few bolt ons(intake, headers/exhaust, PCM tuning, CAM), then I'd firm up the rear end and tranny(12 bolt, shift kit, torque arm, subframe connectors). Then when the time comes to add a blower AND a 383 stroker kit AND a 150 shot of NOS you'll have the backbone to handle it.....better(cause even then something's gonna break sooner or later!!!!! ALWAYS!!!!!!!)

hiphophomer
05-13-2003, 08:05 PM
Originally posted by HotRoder
GO for a new high perfomance Camshaft and rocker arms, this would be 1/4 the amount of a vortech supercharger and yet around the same gain in HP if you get the right CAM.
what company and what website?

Add your comment to this topic!