sleepys4 videos

[SmackedInATL]

Yes tire sizes very by brand. Nittos run small.

[Evil Goat]

brands do vary in size....they do not vary more than a couple millimeters in size though, which would be unnoticeable without measurement in comparable size tires

[Lankhoss]

Well I don't know how to find what the stock size is, but I just measured from wheel to the top of my (almost bald) tread, and it's 2.75" on the rear tires, and this is with about 7lbs lower pressure than what is recommended for the tire.

It may just be the design of these tires, because both tires are supposed to have 6/32" tread depth, but I as well as my friends found a very noticeable difference in the thickness of the tread on these tires compared to the Goodyears. Both had the same tread depth and treadwear, yet these tires have literally lasted twice as long as my first set did. And I don't do burnouts or anything, so that's not what happened to the first set.

[Whiteboy572]

I understand it's a Z06.... Why do you think i kept racking my brain to figure out whats going on? lol. Ok, I didn't contribute the extra 1000 rpms you have. and the tires do make a difference. I read somewhere that the GTO, Z06 and the CTS-V have the same gear ratios in the tranny. I dont know if they were talking about the early C5's or the C6's though. My car goes to 68mph in 2nd gear at 6100 redline. So your car slightly higher gear(lower number) and taller tire is helping you alittle bit. I want a Z06.

The c5 base and c5z have different trans gear ratings (342 gear). My second runs in the ball park of 74-78mph turning it to 6600-6800 although i have had it to 7k before ( i believe my cam peaks at 6300-6400 peak tq is at 4600), dual valve springs, titanium retainers, hardened p.rods, etc... I went from the stock 295/35/18 to the nt555 305/35/18 also. Ill try and find where i saw the gearing page at.

[Whiteboy572]

Gear LS1/MM6 LS6/M12
1st Gear 2.66:1 2.97:1
2nd Gear 1.78:1 2.07:1
3rd Gear 1.30:1 1.43:1
4th Gear 1.00:1 1.00:1
5th Gear 0.74:1 0.84:1
6th Gear 0.50:1 0.56:1
Reverse 2.90:1 3.28:1

The c6z has the same trans gearing as the mm6 or c5 base but has the balls to pull those longer gears.

[BABY J]

^^ Agreed. The C6z makes pretty decent power considering it's a SOHC non-vtec.

[Lankhoss]

^^ Agreed. The C6z makes pretty decent power considering it's a SOHC non-vtec.

It's a SUHC ;-)

[Whiteboy572]

^^ Agreed. The C6z makes pretty decent power considering it's a SOHC non-vtec.

Single Over Head Cam?

Still a pushrod engine..

Agreed with Lank Single Under Head Cam is more like it