Shifting through the 1/4 mile
#27
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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
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
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Originally Posted by bww3588
with a cam its possible, but without capability of revving to 6500 rpm, your not going to be in 3rd gear over the stripe.
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Originally Posted by bww3588
thats just plain stupid....theres no reason to spin it that high on a stock cam. no reason at all.
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Originally Posted by bww3588
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.
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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.
#37
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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.
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.
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#38
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Originally Posted by TLUZLS1
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.
![Rolleyes](https://ls1tech.com/forums/images/smilies/LS1Tech/rolleyes.gif)
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.
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Originally Posted by bww3588
thats just plain stupid....theres no reason to spin it that high on a stock cam. no reason at all.
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
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Originally Posted by bww3588
congrats, want to race? ill shift at 6000 and you rev it to the moon.
Originally Posted by Demonicbird00
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
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