lg4 top speed
04-09-2006, 11:13 PM
#4
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Car: 86 Trans Am,03 Yukon,92 Z28
Engine: 5.3, 5.3, lb9
Transmission: th350,4l60e,700r4
Axle/Gears: 3.73,3.73,2.73
when i had my oriiginal motor i had my speedo peged straight down a couple of times not quite sure if this is coredt but we estimated about 120-130mph. it took 11 looooooooooooooooong time and a lot of road to do that but i did it!
04-09-2006, 11:51 PM
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Car: 1993 Nissan 240sx
Engine: Turbo KA24DE
Transmission: 5 spd
Axle/Gears: 4.08 VLSD
No speed limiter, no. As for the top speed, someone said the speedo only goes to 85. Well mine is a factory 140 unit. *shrug*
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04-10-2006, 01:53 PM
#11
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Car: 1983 Camaro Z28
Engine: 584
Transmission: TSI Glide
Axle/Gears: Quick performance 9 inch
had mine at well over 140 on a couple og occasions course it wasnt just the stock 305 when I had it. Plus manual valve body in the 700-r4 meant it wasn't doing that stupid half throttle downsift that they are notorious for.
04-10-2006, 02:05 PM
#12
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Car: 84 Trans Am
Engine: 350
Transmission: T-5
Axle/Gears: 9in 4.30's
Originally Posted by JamesC
I read somewhere that top speed for an L69 was 138. I doubt a stock LG4 could complete with that kind of speed.
JamesC
JamesC
5200 rpm in 5th...took forever but estimates out to 150 ish... with 27in tall tires
04-10-2006, 08:12 PM
#13
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Car: 86 Trans Am,03 Yukon,92 Z28
Engine: 5.3, 5.3, lb9
Transmission: th350,4l60e,700r4
Axle/Gears: 3.73,3.73,2.73
i had a flowmaster cat-back and k&n replacement filter with the lid flipped when i did my runs. oh and a fresh set of plugs and oil change! that motor had 21x,xxx miles on it too! crazy
with the 2.73 gears though i was in 3rd doing about 4000rmp and if i was easing into it in 4th @ about 2500-3000rpm! that was insane!
with the 2.73 gears though i was in 3rd doing about 4000rmp and if i was easing into it in 4th @ about 2500-3000rpm! that was insane! 
05-28-2006, 08:13 PM
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Car: 1993 Nissan 240sx
Engine: Turbo KA24DE
Transmission: 5 spd
Axle/Gears: 4.08 VLSD
You get a new boost valve, I believe. A search will turn it up. Though you had better have done other stuff to the trans so it can take the abuse.
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