a4 4.10 top speed?
08-04-2010, 10:20 PM
#21
12 Second Club
iTrader: (7)
Join Date: May 2009
Location: Walton, Indiana
Posts: 280
Likes: 0
Received 0 Likes
on
0 Posts
i have a set of 28 inch tall tires in the shop, not only does it look stupid as hell on the car its slows it down considerably. i run great and consistent on a 26 inch tire and hook better and get down the track faster but i usually run 1/8th mile.
I am going to have to get an expert opinion on the WOT 4th gear shift. i just cant see how it hurts it more han any other WOT shift. it literally runs on the same clutches.
I am going to have to get an expert opinion on the WOT 4th gear shift. i just cant see how it hurts it more han any other WOT shift. it literally runs on the same clutches.
08-04-2010, 10:32 PM
#22
i have a set of 28 inch tall tires in the shop, not only does it look stupid as hell on the car its slows it down considerably. i run great and consistent on a 26 inch tire and hook better and get down the track faster but i usually run 1/8th mile.
I am going to have to get an expert opinion on the WOT 4th gear shift. i just cant see how it hurts it more han any other WOT shift. it literally runs on the same clutches.
I am going to have to get an expert opinion on the WOT 4th gear shift. i just cant see how it hurts it more han any other WOT shift. it literally runs on the same clutches.
You should be able to run 26s and 410s and not have any problems.
If you can hook consistently on a 26", I say stay with it. Quicker 60' and ET.. If you ran 1/4, I would say go to a 28".
https://ls1tech.com/forums/13675200-post25.html
08-04-2010, 10:59 PM
#23
12 Second Club
iTrader: (7)
Join Date: May 2009
Location: Walton, Indiana
Posts: 280
Likes: 0
Received 0 Likes
on
0 Posts
Sorry i guess i wasnt clear.
I run every weekend at an 1/8th track on 26s. does great pulls 1.7s and 7.8s on street tires but idk what it would do with a good DR. doesnt even finish 3rd
I recently went to a 1/4 track on stock tires and id say it was shifting to 4 at about 1k feet or close to it. i didnt have my 28s on so i cant say what it would do but i belive they would slow me down there also.
I read another post in the drag tech section and rossler actually said if your trans was built strong and correctly you should have no problem with a 3-4 WOT shift. but thats also without 600+hp numbers i belive.
I run every weekend at an 1/8th track on 26s. does great pulls 1.7s and 7.8s on street tires but idk what it would do with a good DR. doesnt even finish 3rd
I recently went to a 1/4 track on stock tires and id say it was shifting to 4 at about 1k feet or close to it. i didnt have my 28s on so i cant say what it would do but i belive they would slow me down there also.
I read another post in the drag tech section and rossler actually said if your trans was built strong and correctly you should have no problem with a 3-4 WOT shift. but thats also without 600+hp numbers i belive.
08-04-2010, 11:07 PM
#25
Sorry i guess i wasnt clear.
I run every weekend at an 1/8th track on 26s. does great pulls 1.7s and 7.8s on street tires but idk what it would do with a good DR. doesnt even finish 3rd
I recently went to a 1/4 track on stock tires and id say it was shifting to 4 at about 1k feet or close to it. i didnt have my 28s on so i cant say what it would do but i belive they would slow me down there also.
I read another post in the drag tech section and rossler actually said if your trans was built strong and correctly you should have no problem with a 3-4 WOT shift. but thats also without 600+hp numbers i belive.
I run every weekend at an 1/8th track on 26s. does great pulls 1.7s and 7.8s on street tires but idk what it would do with a good DR. doesnt even finish 3rd
I recently went to a 1/4 track on stock tires and id say it was shifting to 4 at about 1k feet or close to it. i didnt have my 28s on so i cant say what it would do but i belive they would slow me down there also.
I read another post in the drag tech section and rossler actually said if your trans was built strong and correctly you should have no problem with a 3-4 WOT shift. but thats also without 600+hp numbers i belive.
28s won't slow you down as much on a 1/4 track as an 1/8 since they pull better on the top end. If you are dead hooking with the 26" though, they 28" will no doubt be slower. Keep the 26" until you can no longer hook with them.
With a built trans, I am sure you could. I doubt a built 4l60E could hold it though. I have a built trans and mine is locked out... I don't need to go that fast in any race anyway.
No problem.
08-04-2010, 11:54 PM
#26
12 Second Club
iTrader: (7)
Join Date: May 2009
Location: Walton, Indiana
Posts: 280
Likes: 0
Received 0 Likes
on
0 Posts
I have a very mild cam, not even to a hot cam yet. TCI 3k, 4.10s, bone stock 243 heads, nothing serious its just a DD. those times are on 245/R16 street tires that came stock on my car. and no real tune to speak of.
Also has 177k miles so im just throwin spare parts at it. not crap for dyno numbers but it will hold its own against anything on the street except another bigger buit ls1obviously.
Also has 177k miles so im just throwin spare parts at it. not crap for dyno numbers but it will hold its own against anything on the street except another bigger buit ls1obviously.
08-05-2010, 10:12 AM
#27
TECH Regular
iTrader: (8)
Join Date: Mar 2008
Location: Plain Dealing, LA
Posts: 445
Likes: 0
Received 0 Likes
on
0 Posts
Make a thread about this in the auto section and you'll get a good answer. From what I have seen even with built autos most builder's dont wont you shifting into 4th a WOT. You can probably get away with it for awhile (in your case maybe longer who knows) but eventually the trans will let go. The 3-4 WOT shift is disabled from the factory and most tuner's will keep it disabled unless you tell them you want it. Probably for a reason...
Look at performabuilt's website. They claim their level 3 trans can handle WOT 3-4 shift, but thats the only one they make that claim for.
Look at performabuilt's website. They claim their level 3 trans can handle WOT 3-4 shift, but thats the only one they make that claim for.
08-05-2010, 10:27 AM
#28
12 Second Club
iTrader: (7)
Join Date: May 2009
Location: Walton, Indiana
Posts: 280
Likes: 0
Received 0 Likes
on
0 Posts
Even when i got my car and it was bone stock it would shift 3-4 @WOT the limiter was at 165mph when i got it and i could shut it down. That makes me wonder why it wasnt locked out when i got it? being a cop car possibly?
08-05-2010, 11:35 AM
#29
TECH Fanatic
iTrader: (5)
Join Date: Sep 2008
Location: Salem/Keizer
Posts: 1,120
Likes: 0
Received 0 Likes
on
0 Posts
Wrong. Totally different set of clutches.....and less of them. Try taking a look at a "core" transmission, and you'll see what I mean. 4th is WEAK in comparison to 1-2-3. That's why you don't want to abuse 4th.....or for the truck guys, never tow in 4th. Same problem.
08-05-2010, 02:19 PM
#30
TECH Regular
iTrader: (8)
Join Date: Mar 2008
Location: Plain Dealing, LA
Posts: 445
Likes: 0
Received 0 Likes
on
0 Posts
Possibly yes. Maybe cop cars have that so they can enjoy high speed pursuits lol. Every car I have owned or rode in has just banged the limiter topped out in 3rd and not shifted to fourth. Even the older vehicles I had with 700r4's woiuldn't do it, built trans also. The one time I had my 2001 Z28 up to 140ish i had let off the gas to let it shift, then get back into it. This is with a PB trans
08-05-2010, 05:16 PM
#31
I have a very mild cam, not even to a hot cam yet. TCI 3k, 4.10s, bone stock 243 heads, nothing serious its just a DD. those times are on 245/R16 street tires that came stock on my car. and no real tune to speak of.
Also has 177k miles so im just throwin spare parts at it. not crap for dyno numbers but it will hold its own against anything on the street except another bigger buit ls1obviously.
Also has 177k miles so im just throwin spare parts at it. not crap for dyno numbers but it will hold its own against anything on the street except another bigger buit ls1obviously.
08-05-2010, 06:00 PM
#32
TECH Addict
iTrader: (4)
Join Date: Feb 2009
Location: Savannah, GA
Posts: 1,998
Likes: 0
Received 0 Likes
on
0 Posts
What I mean is that with the stock gearing that came in the car.. I can maxx out the speedo and do about 155-160. I know this for a fact because I have driven the car that fast overseas, now I was under the impression that the higher the gear the less top end you get..
But, if I can spin the motor until 5,500 and still hit 140 then I would be happy still..
But, if I can spin the motor until 5,500 and still hit 140 then I would be happy still..
08-05-2010, 06:07 PM
#33
What I mean is that with the stock gearing that came in the car.. I can maxx out the speedo and do about 155-160. I know this for a fact because I have driven the car that fast overseas, now I was under the impression that the higher the gear the less top end you get..
But, if I can spin the motor until 5,500 and still hit 140 then I would be happy still..
But, if I can spin the motor until 5,500 and still hit 140 then I would be happy still..
Yes, it will lower your top speed. You should not be in 4th gear at WOT however so I would not suggest that, very bad on the transmission.
There are calculators somewhere on the internet that will give you your top speed with a given tire size and gear selection.
08-06-2010, 07:23 AM
#35
12 Second Club
iTrader: (7)
Join Date: May 2009
Location: Walton, Indiana
Posts: 280
Likes: 0
Received 0 Likes
on
0 Posts
2 and 4 the same clutches apply. Thats why we upgrade to a better band to hold it. not a wide band but just a HD band. that way it wont slip under WOT. Since i havnt found proof ill just keep running the way ive been running. i want an excuse to go A3 anyway
08-06-2010, 07:03 PM
#36
TECH Regular
iTrader: (8)
Join Date: Mar 2008
Location: Plain Dealing, LA
Posts: 445
Likes: 0
Received 0 Likes
on
0 Posts
08-12-2010, 12:25 AM
#40
TECH Senior Member
"The 3-4 WOT shift is disabled from the factory and most tuner's will keep it disabled"
I can assure you that this is not the case. If it didn't shift, it didn't have the power to pull the speed, the tranny has a problem, or the programming has been jacked with.
Bone stock, the tranny will most certainly shift into 4th at WOT.
I do agree that it's a bit tough on a stock tranny. However, when built correctly it's really not so bad, IMO. I've done it many times at 423 RWHP with no problems.
I've toasted many a 4L60-E (the 2000 Z28) but it was usually a friction failure on the 1-2 shift.
I can assure you that this is not the case. If it didn't shift, it didn't have the power to pull the speed, the tranny has a problem, or the programming has been jacked with.
Bone stock, the tranny will most certainly shift into 4th at WOT.
I do agree that it's a bit tough on a stock tranny. However, when built correctly it's really not so bad, IMO. I've done it many times at 423 RWHP with no problems.
I've toasted many a 4L60-E (the 2000 Z28) but it was usually a friction failure on the 1-2 shift.