Demonicbird00

iTrader: (17)

i think he meant in a stock 10bolt. imo its risky to go and put that kinda gear into the 10bolt your asking for trouble and a broken rear. (in most cases)

-brandon

davered00ss

iTrader: (4)

16" rims could be the issue. Run on the stock 275/40'17's.

davered00ss

iTrader: (4)

I don't redline 4th @ 120 with 4.10 gears.

bww3588

iTrader: (49)

stock 245/50 16's are the same overall diamater as 275/45 17's. give or take a tenth of an inch.

TLUZLS1

iTrader: (6)

Yeah there is no way you should hit 5th in the 1/4. I've crossed the line in 3rd at 105.

bww3588

iTrader: (49)

you must have a healthy cam. to be able to rev it to 7k. cause stock redline and stock gears your not running 105 in 3rd.

shocker45

with my stock gears, 3.42's and stock wheels and stock tires. i was going through the traps at 110.6 mph in 3rd gear at about 6500 rpm.


now with the 4.11's 26" slick, im going through at 6200 rpm in 4th gear, trapping 112 mph.


big difference, old combo, 12.86 @ 110.6, new 12.29 @ 112

bww3588

iTrader: (49)

with a cam its possible, but without capability of revving to 6500 rpm, your not going to be in 3rd gear over the stripe.

TLUZLS1

iTrader: (6)

My tuner raised the stock rev limiter to 6500. Im running the stock cam and gears and I believe I was at about 6300 rpms when I crossed the line. I was pretty surprised myself, but I found that shifting into 4th at about 6k gave me a trap speed of 106.

bww3588

iTrader: (49)

thats just plain stupid....theres no reason to spin it that high on a stock cam. no reason at all.

shocker45

whats it safe to run a tr 224 cam to? new pushrods and valve springs?

bww3588

iTrader: (49)

6500 tops....

shocker45

good stuff, rev limiter is set to 6600 and my shiftlight i got programmed at 6400 rpm.

my hp falls off at 6400 anyways.

TLUZLS1

iTrader: (6)

Considering thats the first time my car has seen that high of rpms, well besides dyno pulls, i dont think it's gonna hurt. Plus, ive seen plenty of ls1s do it regularly. I was just curious to see if it helped or hurt, and I was right, it hurt the trap speed.

bww3588

iTrader: (49)

theres no power to be had up that high with stock heads and cam. so thers no reason to even try that. it redlines at 6000 for a reason.

TLUZLS1

iTrader: (6)

Looking at my dyno sheet, it doesn't make sense to shift into 4th. It puts me at less power plus it takes time to shift. I know what you are thinking, but it just doesn't apply to my case. I did it just because I was curious, you are acting like I committed a crime

Oh and I looked at a mph to rpm calculator and at 106 mph I was turning about 6150 rpms. Not that high, thats lower than the stock limiter.

shocker45

you might not be committing a crime, but your going to end up bending a pushrod. to each his own tho.

if you wanna rev that high go nuts, while you got your motor apart you midaswell do heads and cam too, so its a win win.

bww3588

iTrader: (49)

congrats, want to race? ill shift at 6000 and you rev it to the moon.

Demonicbird00

iTrader: (17)

i begged to differ. i was shifting at 6400 SI. it all depends on your setup and mods and if the motor is still making/maintaining the power.

were you dynoed in 3rd? when i was on stock rear and 3.42s i was shifting into 4th about 50 yrds or so from the traps.

-brandon

TLUZLS1

iTrader: (6)

No not really... Like I said, I dont shift past the redline 6k. Dont be so bitter.

No it was in 4th. I usually shift into 4th about 50 yds or so before the line as well, but thats at about 5900-6000rpms.