01Ls1Tx

Among other mods im about to dump on my 01 ls1, im about to get a h/c pkg from tsp.

my question is, the direction i want to take my car is maximum top speed. I wany my ls1 to have its main power delivery in top end speed. so, will the cam be a determining factor in getting my ls1 closer to the 195mph mark?

if so whats the best tsp cam for gearing my car for top end speed. quarter mile times mean nothing to me, if it does 17 secs in a 1/4 and has a top speed of almost 200, thats exactly what im aiming for.

WS6TransAm01

iTrader: (13)

If you have an F-body getting close to 200 is going to be an aerodynamic problem more then a power problem.

I believe Patric G to about 180, maybe a little more with his H/C setup making a little over 500, but I think he uses Nitrous as well to get there.

Though they may not look it to most, F-Bodies are the aerodynamic equivalently of a brick.

If you have a Vette, then 200 is possible, and some have done it with a H/C setup as well.

chrisok1

I have been 161 in my camaro and I have no desire to go any faster than that in this car. I have been over 170 on a bike and felt much more in control. The aerodynamics on f-bodies suck and the car is not very stable at that speed. I'm sure it is possible to hit 200, but you are going to spend a lot of money in body mods, suspension, brakes, etc, in addition to the horsepower requirements of doing 200. Buy a corvette--much safer car at speed. Just my opinion, but good luck.

HitmanLSX

I've had my ASA cam only ws6 to 183mph. Prior owner had it to 172mph during an open road race in Nevada before the cam with jus bolt-ons. I think patricks was 180ish in the Texas mile or something similar. Its easier to hit those speeds when you're not limited to a mile length from a dig.

WS6TransAm01

iTrader: (13)

You're right.. it was a standing mile, not an unlimited amount of road.

I just don't think that F-Bodies are good cars for trying to reach 200mph. Obviosly there are F-bodies that have hit 200mph in the 1/4 but they have nothing in common with "our" cars except maybe a few body panels and select pieces of the frame... if any.

If I was going for 200mph I would do it in a Vette

HitmanLSX

When I hit 183 in mine it was still smooth as silk didn't give me any reason not to push it further. This of course was with eibach springs, koni D/A up front and bilstein HD in back, rod ended lca's, adj phb, and a pretty aggressive road racing alignment.

On the other hand I've also raced an NSX in a stock 99 t/a with the t-tops off and let off after making a lane change at 110 because it felt unstable. So I can understand some of what you're saying. But if a 1st gen camaro can run in the 200mph+ class in an open road racing course I don't see why a 4th gen which is more aerodynamic couldn't with the proper suspension.

5_02ls1

iTrader: (20)

what gearing m6 or a4 it will help alot in determining what you want.....
never had the 4th gen 0ver 120 but ive been 145+ in a 3rd gen and it still felt stable....

GEARHED

iTrader: (5)

For those wondering, Patrick G with Thunder Racing Custom Cams is a sponsor here

JoeyGC5

iTrader: (24)

Go aggresive as possible. Top Speed runs put alot of abuse on the motor running all out for 20-60 seconds (standing mile anyways). Then theres the suspension work and everything else that falls into place. At Maxton's Monster Mile last April I was smoking the tires through third and running into a 20mph headwind. I went 173+mph with my pump gas (91 octane) 416 motor. Hell The Factory Five supercoupe with a LS7 only did 158 in the same race. So factor in a much mid and peak power as possible and then work like no other on suspension and aerodynamics.

Here is a short video from the Maxton Mile
http://media.putfile.com/173mph-Maxton-run-takeoff

Patrick G

iTrader: (14)

First, you need get your stance right. Too much air under the car will make your top speed squirrely. Next you need to select the gearing that will put you at or slightly above your power peak and your projected top speed. This is critical. When I ran 183 mph in the standing mile, I used 3.73 gears. I logged 6800 rpm going through the traps in 5th gear.

If you want to hit 195 mph with 3.73 gears in 5th, you need to turn a little over 7200 rpm. If you had 3.42 gears, you would only need a little over 6600 rpm to hit 195 mph. So if you're talking a stock T-56 and standard size tires, you'll need to select a gear between a 3.42 and 3.73.

That said, now you have to work on your engine package that will get your power where you need it. Again, power under the curve is HUGE because the climb in 5th gear is very long unless you're making a ton of power. Also, be sure to save up for a larger radiator with a built in oil cooler (like the one LG sells).

01Ls1Tx

yeh i guess i wasnt clear.

im not really interested in a 1/4 mile at all. altho all the information you guys put forth is great.

What im getting at is i want top speed, open road 10 miles something like that.

What Heads and Cam pkg out there will get me close to that? Where do i get it. What about the Tallest Gears? Who has them? What are the specs model of heads and cam i need, and gears?

Yes i will have to redesign the Aerodynamics of my ride, but i own my dream car, this is where i want to take her top speed.

any detailed info out there? technical info is also greatly appreciated.

Thanks Guys,

CAMAROZ28AQUINO

F2 Procharged 427 should get you there

PONTIAC SLP

iTrader: (3)

can 4.10 gears hit 190 mph ?

ls1ow

iTrader: (2)

omg i want the 3 mins back of my life that i just wasted reading this thread.

MrElectric03

iTrader: (71)

PatrickG just explained this...There are many ways to make power and a ton of different setups...There are very few people out there with more experience than PatrickG...listen to the guy.

DONAIMIAN

iTrader: (18)

You would have to rev your motor way out there (cant use 6th gear either), and you would overheat your rear. But if that doesn't bother you then yeah.

If this was my goal, I would start with suspension and chassis first.

Shawn MacAnanny

iTrader: (12)

I pegged the speedo in my 01 Z06 465rwhp, 422rwtq but i had micro polished internals in the trans, vararam intake and such. I figure it to be around 202 as i was running 305/35r18 tires which are slightly larger than stock. I dont know with an fbody though, never trusted the brakes on them to push them THAT far.

JimMueller

iTrader: (9)

I'd start there, too.... make it safe to handle your projected speeds before you can actually reach those speeds. Brake system, cooling, suspension and/or downforce, not to mention personal safety upgrades like fire extinguisher, roll cage, etc. If you'll only be doing it once in awhile, you can use special tape to seal the gaps between the front body panels and to smooth over the fog lamp and front bumper irregularities. Some drill holes in the back of their hood to release the high-pressure air from the engine bay.

So far as power, for that particular requirement you'd likely not be below 4500RPM except in first gear and/or if you shift slow. Since you're buying from TSP, what did they recommend?

Old SStroker

Finally, an intelligent post.

Don't forget that tires are probably the most important thing if you try to go 190+. Get the best for the job.

OP, if you are planning to run these speeds on anything other than a closed course or sanctioned event, you are a fool. If you don't have significant seat time above 150 mph before you try something like this I'd rate your survival chances at less than 50%.


Jon

The Dragon

iTrader: (6)

Damn.

There's just WAY too many people in this thread with little to no seat time above 180 mph in an F-body OR Corvette.

CD on an F-body is .34 dependent on model and year. CD on a C6 ZO6 is .34. .29 on an FRC C5 if memory serves.

Brick an F-body is not. (FYI: CD on a Viper is .40 . . . Now THAT'S a brick)

A Fourth Gen F-body will be SUBSTANTIALLY more stable than a C5 at lift speeds . . . speeds roughly above 150 mph. Lacking a rear wing PLUS insufficient down-force, the rear end of the Corvette, especially the C5, gets "very squirrely" above even 110 mph. This was published OVER AND OVER through the years.

Just because an object is slippery and displaces air more easily does NOT make it more stable OR less prone to lift at the front/rear.
Coefficient of Drag and Downforce are two completely different things.

I've been above 19x mph in my Firehawk roughly two dozen times. My only concern was the windshield blowing out (extreme vibration occurred above 180 mph each trip).