black_phoenix

iTrader: (27)

About to upgrade from 2.73's to 3.73's... and really curious how would the top speed is...

at what speed did you top out your automatic ls1 after gear swap???

lemons12

iTrader: (71)

OD is locked out, don't like replacing transmissions and that's plenty fast enough for me. iirc its around 140 or so.

black_phoenix

iTrader: (27)

i assume you have 3/73's??

lemons12

iTrader: (71)

Correct.

ramairws6

iTrader: (33)

Really? I data logged 142 mph in 3rd gear and still had fourth left!?? With 373's rollin' on 17's

lemons12

iTrader: (71)

4th gear locked out.... Meaning I don't shift into 4th. Top of 3rd is right around 140, if you say you logged 142, I'm sure thats right.

juicy

iTrader: (6)

what rpm is that

gyrene2003

Well I never logged anything but when I had the 4.10s before my last rear explosion at the track I never pushed it past 120ish and that was twice roll racing on the highway. Went back to the 3.90s cause they are much better on the street and in general. Never messed with 3.73s. Always thought I needed alittle more due to the vert weight, plus all auto guys do 3.73s so I wanted to be alittle different

ProTreeRacing

iTrader: (4)

ive been 190ish+
325/50/15 mt
3.9 rear gear
7000+rpm
4l60-e od unlocked
3rd would do about 140 if i remember correct

lemons12

iTrader: (71)

6400?

ramairws6

iTrader: (33)

Ok just looked, it was actually 144 mph at 6530 RPM in 3rd.....

jak2908

iTrader: (1)

155 with 3.73's in 4th