New LS1 Owners - Newbie Tech Basic Technical Questions & Advice
Sponsored by:
Sponsored by:

Shifting early

Thread Tools
 
Search this Thread
 
Old 09-21-2009 | 11:54 AM
  #1  
Super six's Avatar
Thread Starter
Staging Lane
 
Joined: Jul 2008
Posts: 63
Likes: 0
Default Shifting early

Well after finishing up the swap I thought I would test the camaro against my grand prix. Now my camaro is an M6 and I am not the best driver for it at all but I was sure that I could take down my grand prix that has run the best time in my sig. Cause the camaro has lid, bellows, MAF, headers, x pipe with bullets, bmr torque arm and trailing arms I was sure the camaro would win. But after 4 trys I lost everytime, and couldn't figure out why. Then I hooked the car up to a scaner and found out my rpm and speedo are off. The rpm gauge start off by about 500 but to about 5000 rpm it is off by a 1000. So when I was shifting at 6000 rpm I was really shifting a 5000.

Is this why I lost? And does shifting it that early really slow it down that much?
Old 09-21-2009 | 12:17 PM
  #2  
teke184's Avatar
TECH Junkie
iTrader: (5)
 
Joined: Feb 2007
Posts: 3,183
Likes: 2
From: Key West, Florida
Default

well not only are you not using the peak of the power band, you are also probably having to shift more often, which will also slow you down.

time for a harlan shift light....and start ignoring the tach.

i've never heard of one being THAT far off though. are you correcting for any gear change??
Old 09-21-2009 | 01:52 PM
  #3  
twitchtwice's Avatar
12 Second Club

iTrader: (12)
 
Joined: May 2008
Posts: 2,612
Likes: 1
Default

is you car tuned for a 6speed and everything? or was it a complete pullout
Old 09-21-2009 | 03:22 PM
  #4  
Super six's Avatar
Thread Starter
Staging Lane
 
Joined: Jul 2008
Posts: 63
Likes: 0
Default

it was a complete pullout.
Old 09-21-2009 | 04:05 PM
  #5  
1slo_camaro's Avatar
TECH Fanatic

iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

still you shouldve killed the grand prix. i mean damn bone stock ls1s run mids to low 13s if im not mistaken. and even shifting early you shouldve been able to power around him/her ecspecially in 3rd gear just my two pennies. go on a back road if you have one thats straight. dont worry about your tach or anything just listen to the motor and feel the car. youll get to a point where you feel the car doesnt wanna pull as hard anymore thats where you should shift. i dont think i ever paid any attention to my tach but i could tell you exactly where i was shifting. listen to the motor when it stops purring and you feel it stop pulling. or get to its peak then shift. i noticed driving a few LSx cars that when they hit a certain rpm the prettty much die. my LTx cars would slowly die top end. if you can understand that rambling on i hope it will help you.... lol good luck
Old 09-21-2009 | 08:19 PM
  #6  
NAAllTheWay's Avatar
TECH Regular
 
Joined: Feb 2009
Posts: 426
Likes: 0
From: Geneva, IL
Default

yea that can have a big effect, emagine that u are supposed to shift at 6 and it drops down to 4700 after you do, now when you shift at 5 it will probably land you around 4000 rpm, so not only are you losing the power up top but then you are dropping so far down in the power band your making prolly just over half of the power at 4k than you would at 6k, god only knows how much time that could be costing you.
Old 09-21-2009 | 09:08 PM
  #7  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

Guys..... my car and many others on here were 13.6-7 cars stock....mine was so this is not totally unreasonable..that is a normal time.....the fast cars are on a diet with a few factory freaks mixed in....
Old 09-21-2009 | 09:12 PM
  #8  
1slo_camaro's Avatar
TECH Fanatic

iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

damn i thought ls1s were a lil faster. i ran a couple of my buddies ls1s bone stock and they were low 13s. idk maybe it was the track or factory freaks. thats crazy. sorry for my ignorance
Old 09-21-2009 | 10:58 PM
  #9  
Bugsy's Avatar
Staging Lane
iTrader: (1)
 
Joined: Mar 2009
Posts: 59
Likes: 0
Default

Originally Posted by 1slo_camaro
damn i thought ls1s were a lil faster. i ran a couple of my buddies ls1s bone stock and they were low 13s. idk maybe it was the track or factory freaks. thats crazy. sorry for my ignorance
My 2001 A4 went 13.49 stone stock. The previous owner ran that time. He gave me the timeslip and the dyno sheet. The car did feel strong for a stock auto.
Old 09-21-2009 | 11:08 PM
  #10  
1slo_camaro's Avatar
TECH Fanatic

iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

yea alot of autos i saw ran that around 13.3-13.5 and then with a good driver i put a buddies bone stock down to the paper filter with a 275 summitomo tire out back ran 13.28 or something like that. thats the fastest ive seen a stock lsx motor
Old 09-21-2009 | 11:12 PM
  #11  
Bugsy's Avatar
Staging Lane
iTrader: (1)
 
Joined: Mar 2009
Posts: 59
Likes: 0
Default

I thought that was a pretty good time with the 2.73s.
Old 09-22-2009 | 06:40 AM
  #12  
NAAllTheWay's Avatar
TECH Regular
 
Joined: Feb 2009
Posts: 426
Likes: 0
From: Geneva, IL
Default

my 98 ws6 ran 13.48 bone stock (a4) my buddies 98 ss bone stock ran 13.18 (m6) bone were stock down to the filter...then again i know another kid, not so much a buddy, more of a tool, his T/A ran 13.9 stock (a4) not spinning the tires....it just depends on what gear 273/323/342....a4/m6 ....what year..98/99/00/01-02...air quality...and some are just faster than others for no aparent reason
Old 09-22-2009 | 06:41 AM
  #13  
NAAllTheWay's Avatar
TECH Regular
 
Joined: Feb 2009
Posts: 426
Likes: 0
From: Geneva, IL
Default

and obviously the trim....ss/z28/formula/ws6.....ram air can account too
Old 09-22-2009 | 12:16 PM
  #14  
Bugsy's Avatar
Staging Lane
iTrader: (1)
 
Joined: Mar 2009
Posts: 59
Likes: 0
Default

Originally Posted by NAAllTheWay
and obviously the trim....ss/z28/formula/ws6.....ram air can account too
Actually, those factory ram air set-ups have VERY little effect on performance. They're more for aesthetics than anything else.
Old 09-22-2009 | 02:36 PM
  #15  
BobDoLe's Avatar
TECH Fanatic
iTrader: (11)
 
Joined: Jul 2006
Posts: 1,510
Likes: 3
Default

Originally Posted by NAAllTheWay
and obviously the trim....ss/z28/formula/ws6.....ram air can account too
for a drag race, i'd disagree with you for the most part. but i guess if you're comparing an auto Z28 to auto SS, you'd at least know the SS has 3.23 vs Z28 possibly on 2.73's and maybe the Z28 had the cheaper tires with the 118mph speed limiter... otherwise, suspension aside, its pretty much the same damn car.
Old 09-22-2009 | 03:44 PM
  #16  
NAAllTheWay's Avatar
TECH Regular
 
Joined: Feb 2009
Posts: 426
Likes: 0
From: Geneva, IL
Default

yea i mean, its not a big difference, but its been tested ram air can add 5 flywheel hp at 60 less the slower your going, more the faster your going....im not saying the difference is gonna be earth shattering, but in the racing world, especially drag racing, every little bit can make a huge difference...as long as we are on the traffic of the trim of the car....when i went to by my car (98 ws6) the paperwork rated it at a 13.4.....they also had a 01 formula that was rated at a 13.2......they said it was lighter or something,,....i dont want to make a stink about weather or not ram air works, thats besides the fact, the point is many people think a ls1 is a ls1 is a ls1.....and theres a lot more to it, thats all i was trying to say
Old 09-22-2009 | 03:47 PM
  #17  
NAAllTheWay's Avatar
TECH Regular
 
Joined: Feb 2009
Posts: 426
Likes: 0
From: Geneva, IL
Default

...iv heard of stock ls1's out of the factory running into the 12's, full weight untouched, im sure you all have too, iv seen them at the track go 14's at full throttle out of the gate without the tires spinning....im sure no 1 thing will make a full second difference, but if u add in all the SMALL factors it can add up to a second or more...driver mod, trim, weather, gear, altitude, stock suspension, factory freak, etc etc etc
Old 09-22-2009 | 04:47 PM
  #18  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

[QUOTE=NAAllTheWay;12259627]...iv heard of stock ls1's out of the factory running into the 12's, full weight untouched, im sure you all have too, iv seen them at the track go 14's at full throttle out of the gate without the tires spinning....im sure no 1 thing will make a full second difference, but if u add in all the SMALL factors it can add up to a second or more...driver mod, trim, weather, gear, altitude, stock suspension, factory freak, etc etc etc[/QUOT


Yep it is a car to car thing but I think mid 13's is average for a bone stock car...

I have a LT1 friend who runs low 13's N/A and a best 12.18 on a 100 shot with only headers/borla/BBK TB so WTF. I can't explain it but I see it happen....
Old 09-22-2009 | 06:43 PM
  #19  
1slo_camaro's Avatar
TECH Fanatic

iTrader: (2)
 
Joined: Apr 2008
Posts: 1,169
Likes: 1
From: Born/Raised North East, MD Lived in VA, NC, MI Back in Yorktown, Va
Default

yea i defeintaly think when it really comes down to it its, alot of the driver. i mean hell your not gonna take a civic and put it into the 11s with intake and exhaust and a good driver but im saying. that with a good driver you might put a stock LS into the 12s or even a stock lt into 13s i mean hell my best in my my stock (skip shift elim. 275s TB bypass) i went 14.1. so i think if you have a good driver you can really do things with a decent car.




All times are GMT -5. The time now is 07:52 AM.