naturally aspirated or forced induction??

[AJZ28]

I've got a 99 Z28 6spd. & I want to run around 10.5-11 sec's in the 1/4 mile but i don't want it to be really tempermental for every day driving. That's why i was curious with the ls1 if it was better to go forced induction or if there was a naturally aspirated setup that would do the job?

[86RedRocket]

Check out Futral Motorsports. They have an ls-1 w/their cam that runs high10's on motor w/stock untouched heads.

[smittie1984]

You are not going to run a 10.5 in the quarter mile with forced induction. It would take you about 700hp to get you there. Also unless you put a link rearend you would never hook up. Lets put it this way. A SS camaro has a supercharger on on it. It only runs in the mid 13s. Don't believe me.

Check out this article by Car and Driver. The test is on a mustang but it mentions the z28 SS times. "...Our last Z28SS (a particularly quick model we tested in October 1998) hit 60 mph in 4.9 seconds and did the quarter in 13.5 seconds at 107 mph."

Think I made this up. Here is the Link. Car and Driver

7th paragraph down. And that is 13 seconds with a PROFESSIONAL DRIVER. To put any form of forced induction you have to rebuild the whole motor. The extra pressure would destroy your motor. If you are really looking into making your car faster the right way. You need to read GM High Tech Performance. They are doing just the motor you want right now. A 726hp everyday driving motor. There is just one problem. It cost 25k to build.

Sorry if I seemed a little tough.

But I go to the drag races a lot and see plenty of camaros and mustangs. If a Simple forced induction was all you needed to propel you into the 10s or even the 11s. Wouldn't every car have them.

[smittie1984]

Sorry replied in the wrong forum.

[SocalSS]

smittie I checked out the link, and not once did it say the camaro was supercharged.

[smittie1984]

Sorry. I called my buddy with a SS camaro. He corrected me. I thought he bought the car brand new. He got it practically brand new. It was a 2001 SS which he bought in the year 2002. Some kid bought it but couldn't afford to pay insurance and the payments. He infact only had it for 3 months before the Repo man got it. But that was enough time for him to slap on a supercharger. That is why I thought it was supercharged. The kid bought it brand new in january of 2002. In march my friend got it. With the supercharger it ran in the mid 12s. But here is where it gets better. Nothing was done to the motor and guess what. He detonated it racing a mustang. Don't worry. He was spanking the Stang till he grenaded.

Sorry about the mistake. But back to the story. You are not going to want a everyday driving 10s car. And by slapping on just a supercharger you are not going to get there. Now it is possible to have a 10s or less streetcar. The only question is how much $$$$ do you have.

Also. You could have 3000 or even 10million horse power. But you are not going to get anywhere unless you have a rearend and tires that will stick to the ground

I appologize about the mistake.

[SocalSS]

No problem. Depending on what kit you get and who installs it a supercharger can be very safe, you just need extra fuel to correct the mixture for all the extra air.
What octane gas was he running and what was his psi set to?

[simmeth]

heh,
if you want to go into the 11's forced induction and want to do it to a stock car. Check out this link, it will definitely help you get there even on the stock rear (although it won't last very long). This is LS1motorsports turbo kit for the LS1. http://www.ls1motorsports.com/Single_Turbo.asp

Just might need a better clutch for M6's though and a really well built auto for autos.
Enjoy

[AJZ28]

I DO REALIZE THAT GM PUT THE WEAKEST REAREND IN THE WORLD IN THE F-BODY'S AND YES I AM IN THE PROCESS RIGHT NOW OF SWAPPING IN A MOSER 12 BOLT W/ 4.10'S. I WAS JUST CURIOUS ABOUT WHICH WAY WAS THE BEST FOR DRIVEABLILITY. AND THANKS FOR THE LINK TO LS1MOTORSPORTS.COM THAT'S WHAT I WAS LOOKING FOR.

[Mykdiver]

N/A good! unless you can afford it, then forced injection is good.

[86RedRocket]

Actually, I've seen many ls-1's running 10's w/450-500 hp. Remember, power doesn't always equal e.t. I know a guy that runs high 9's @130. The first 60 ft. is the most crucial for e.t. Every 10th you knock of your 60 ft. means 2 tenths off your time at the traps.