seadoo

what is the best possible shift point on the stock 00 cam to get the apsolute best times from your car. my dyno graph shows peak HP is between 5600-5900 rpm, them slowly falls from 6200 on. the car feels like it still pulls up till 6400 rpm. would it be best to shift at 6400 or 6200rpm for the best possible time on the track.

mods are...
LT's
MagnaFlow CB
4000 2.5 Fuddle
stock 3.23's

best time...
1.59 60'
12.2
108 mph

seadoo

anyone?

WILWAXU

iTrader: (6)

My setup (01 car) liked 6200 with the limiter at 6600.

Roarin_8

iTrader: (5)

Mines still shifts at 6000. I'll try to dig up my dyno sheet for ya.

Roarin_8

iTrader: (5)

Here ya go. Mods and time in sig

SUX2BU

iTrader: (14)

My bolt on only car ran 11.04 @ 121 mph. My converter is WAY too big for the stock cam. i don't have enuff power to pull away from the converter and thats the only thing holding me back from being the fastest in the country. it mph's like a mother ****** though. i shifted at 5,600, 6,000, 6,200 and 6,400 and got the exact same times.

Roarin_8

iTrader: (5)

Damn 5100 stall at 2960lbs and 4.10s!! Get a cam already

My raceweight is 3500 with me in it.

seadoo

yeah, the dyno graph shows that it drops after 6200.
but it seems to pull really hard up too 6400.

WILWAXU

iTrader: (6)

You race at a track.. not the dyno

seadoo

I know... only seen the dyno once for tune.
the graph shows power drop after 6200 but I think the car is pulling hard up to 6400.
besides, my logs show my shift ext. is about 200 rpm more as well. and seeing that the car rides the shift extension most of the time, wouldnt that make it faster?

gator's 99TA

iTrader: (2)

go 6200 shift points minimum. 6300 might be better. i ran 11.9s SI with only a few mods on a sloppy 1.59 60' think about shift extension as well as the dyno graph.

GT Griller

iTrader: (8)

Prolly be easier to see ur dyno graph, but also u want to think about bending push rods, 6400 is pushing it up there pretty good.

Roarin_8

iTrader: (5)

I wouldn't be worried about pushrods, unless he's a M6, as opposed to breaking springs with stock internals.

Ragtop 99

iTrader: (7)

I'd use 6200 - 6400 for best performance. I used 6200 but that was due to wanting to be safe on the stock valvetrain. A4s have big drops between gears which argues for high shift points, but the converter absorbs some of that drop and provides torque multiplication at certain rpms after the upshift. Since each brand/model of TC is different, no one rule applies. You gotta test at the track.

jay_99z

iTrader: (5)

I shifted mine at 6200. I didn't want to trust the stock springs any higher.

You might want to look into a cutout. And maybe short belt too. Every little bit helps when you're getting that close.

s346k

iTrader: (4)

i wouldn't trust the stock valvetrain past 6,200, as the rev limiter has been placed for a reason. a properly set up bolt-on n/a a4 car can run 11s without much danger to the engine or drivetrain. for us a4 guys, it's all in the 60.

seadoo

what do you think about 6400rpm bud?

seadoo

I have them set at 6400 right now Gator...

WILWAXU

iTrader: (6)

Ran my stock valvetrain a nearly 4 years shifting at 6200 and sometimes tagging the 6600 rev limiter without issue.

seadoo

also, my shift extensions at a 6100 shift point is about 5100 logged. with the shift point at 6400 the ext. is 5300