Shownomercy

iTrader: (1)

6400 shift point, 3.73 gears, 28inch radials, and a triple disk FTI that does get locked at track.

I forgot to drop it to D, vs [D] last time I raced the car, should I always leave it in D or does the lower gear help the turbo? (old T4 t76gts)

willizm

iTrader: (10)

I usually just leave it in 3rd. When I ran at the half mile I left it in OD since since I needed it. Unless you need OD then just leave it in D.

Shownomercy

iTrader: (1)

Alright, stupid n00b mistake on my part, gotta try leaving it in D next time out.

Concerned I may run out of gear.

willizm

iTrader: (10)

I did as well. FWIW I had 3.73's, 28" tire, 6200rpm redline and ran out of gear about 135-138mph. I was running base pressure of 10psi at the time because I was crossing the traps right at the limiter so I couldn't bump up the boost. I've since gone 3.54's and 7000rpm which should allow me to do some full boost passes.

Check the gear calc. http://www.f-body.org/gears/
Based off of the info above you should be around 143mph at the top of 3rd. run low boost to see where you are and go from there.

SmartOJ

iTrader: (44)

i thought od was suppose to be locked out at wot?

willizm

iTrader: (10)

Maybe in the tune you can disable that, but my car took going into OD like a champ at a half mile event I did.

Shownomercy

iTrader: (1)

Yea, I am honestly not 100% if it grabbed OD or not, went 140 though

Hope to max out 3rd this season and then see what to do with gears. Damn S60 leaves me only 3.54 option.

willizm

iTrader: (10)

Same here with the s60. Hindsight is 20/20 and I would have gone 9" just to have more options. You can get more mph otherwise though. If you can push a little more RPM that will help as well. For example if you go with a 3.54 gear and bump up to 6600rpm you are looking at 155ish mph at the top of 3rd on a 28" tire

Shownomercy

iTrader: (1)

We shall see, gonna hit up the strip again next weekend and see what she does.

Hopefully a better short time nets me some single digit passes.

tiznodd

iTrader: (4)

If you're making any kind of power, always keep it in D. It's not something that can be controlled via the tune either. When the selector is in D, the overrun clutches are on which takes the load off the overdrive roller clutch. When OD is selected, regardless of what gear the transmission is in, the overrun clutches are off and all of the power goes through the overdrive roller.

LS1NOVA

iTrader: (12)

THIS^^^^^

We've blown one up on the dyno due to the operator running it in 4th at 1000whp.

TrickrTreat

iTrader: (3)

Interesting fact ! Thanks .

I AlWAYS run in 3rd "D" anyways but good to know.

RedRocketZ28

iTrader: (19)

Same here. Even driving around town I keep it in "3rd" and switch to OD when I need to on the interstate. I also make sure to drop it down to 3rd before I do a rolling pull in Mexico.

hellbents10

iTrader: (10)

That one had me laughing!

Sarg

iTrader: (6)

I probably would ha e blown some stuff up. I was under the impression you could lock it out in the tune. Good to know, guess D it is for track passes!