Air pressure to help not break parts

[ZetaZel]

Trying to launch the camaro at a safe rpm level while also getting a good 60 foot. What psi do I need to have these tires take the shock. Car specs 604hp supercharged 3.27 gear 6 speed, Weight 3890 with me in it E85

Rim size 18 inch c5 Z06,

Brand:Hoosier Racing Tire
Manufacturer's Part Number:18158D06
Part Type:Tires
Product Line:Hoosier Drag Racing Slicks
Summit Racing Part Number:HOO-18158D06

Wheel Diameter:18 in.
Tire Size:28 x 10.00-18
Sidewall Style:Solid white letters
Tire Construction:Bias-ply
Tire Diameter:28.00 in.
Section Width:11.00 in.
Tread Width:9.50 in.
Minimum Recommended Wheel Width:8.00 in.
Maximum Recommended Wheel Width:10.00 in.
Directional:No
Asymmetrical Tread Pattern:No
DOT-Approved:No
Run-Flat Technology:No
Tube Required:No
Tire Compound: D06

[Vegas Bound]

3.27 is ratio for auto trans. Do you have auto or manual? Both are "6 speed".

Back when I was manual, I ran 17s with Hoosier slicks at 17-18 psi, launched at 1,800 RPMs and usually 60ed around 1.47-1.50.

[ZetaZel]

Sorry its a manual 6 speed.

[Vegas Bound]

Breaking parts when launching is usually due to wheel hop. Air pressure, RPMs, clutch engagement and the actual parts are involved. Not just air pressure. You can run high air pressure and spin off the line, but wheel hop usually comes at the end of spin. You can run low air pressure and grip well, but will probably stall a little.
Launching a manual is a delicate dance. I played with air pressure, RPMs and clutch engagement rate for a year before I got my 60' to a decent repeatable level.
There is no magic answer. Try different things and see what works for you.

[ZetaZel]

Thanks, I'm going to try your method right now all I got are bmr lowing springs bmr motor mounts. That's about it

[ZetaZel]

Ok results, staged no preload 1800~2000 launch best 60 foot was 1.84 with-1140 DA trapping 96mph thru the 1/8.
Tires was at 16 cold.

[Vegas Bound]

Originally Posted by ZetaZel

Ok results, staged no preload 1800~2000 launch best 60 foot was 1.84 with-1140 DA trapping 96mph thru the 1/8.
Tires was at 16 cold.

Where did you go, Ennis or Ferris? Extreme has awesome prep, usually.

You should be much quicker 60' at your power level. Did you bog?

[ZetaZel]

No went to Yellobelly, yesterday I got brave and launched the car at 3700~3500 rpms and cut a 1.67 60 foot and trapped 97mph. Tires were 16 cold. It pulled like a bat out of hell and 1st time I almost peed my self lol.

[Vegas Bound]

Originally Posted by ZetaZel

No went to Yellobelly, yesterday I got brave and launched the car at 3700~3500 rpms and cut a 1.67 60 foot and trapped 97mph. Tires were 16 cold. It pulled like a bat out of hell and 1st time I almost peed my self lol.

Going to Yellobellow was brave. Slip the clutch a bit faster and you will get into the 1.50s.

[ZetaZel]

Vegas thanks so much for helping me out, Do you go to Xrp? We could meet up this Sunday if you want.

[Vegas Bound]

Originally Posted by ZetaZel

Vegas thanks so much for helping me out, Do you go to Xrp? We could meet up this Sunday if you want.

I have been to XRP many times. I moved out of DFW 2 years ago. Tried LV for a couple years. Drag racing there sucks. I live in Southern Mississippi now. We have 5-6 drag strips to choose from here. I should easily get into the 9s with the elevation and DA at Gulfport, MS this year.

[ZetaZel]

Well, Went back to Yelllobelly for a event and did well... But the weakest link showed its ugly head.... Sheared all 3 bolt the driveshaft to the rubber coupling connecting to the diff.

Ended my night and that launch was going to be the one 1.58 60 got some help from a local from the track and picked up some bolts to limp it back home.

Tire pressure cold was 18 in both rears warmed up I think it was at 20~22 ish. RPM 3800

[Azurna]

1.6 is impressive in a clutch car. Nicely done. Didn't know they made Bias Ply slicks in 18s.

If the plan is aluminum drive shaft. I would be careful. As the hit then targets the diff and seen/hear of a couple break the diff housing all running a alum DS. Carbon fiber seems to absorb the hit better.

Back on topic: I would consider going to a 17 inch tire to have more tire to help soften the launch. Maybe start looking for a 15 inch conversion kit.

Hard to not risk breaking something and still hit a fast et.