First pass in the truck and its SLOOOOOOOOOOOOOOOOW

[bangbangskeetskeet]

Whats wrong with 100mph in 2nd? I shift at 6200 from 2-3 with 3.73 gears and im just about 98mph.

[farmtruc]

Whats wrong with 100mph in 2nd? I shift at 6200 from 2-3 with 3.73 gears and im just about 98mph.

for a 4.8L, 308 gears in a truck is a long time to wait, plus this truck shifts out at 5700rpms, no cam.

[bangbangskeetskeet]

Yeah over 100mph at 5700rpm is a little excessive I think.

[J Industries]

The truck in my avatar had 37" tires with 3.73 for a while. What a turd, but I could also haul on the freeway in 2nd. Overdrive was useless unless going down hill.

[pl4yboy]

Whats wrong with 100mph in 2nd? I shift at 6200 from 2-3 with 3.73 gears and im just about 98mph.

Are you sure? My 3.73s and 6200 was 90ish

[yellowbu]

I have no idea what gear is in it. I know its low as in a 3.08 or so. The n20 tune i have in it is a 52 n20 and 22 fuel. bottle pressure was around 850. Is this thing that slow for being stock and 300k miles?

[Frenchy]

Get your bottle pressure north of 950, that will help. Look in the glove box and get the RPO codes for the rear end. There is a list on here that will tell you what ratio is in it. I'm guessing 3.23's, if stock.

[CHEVROLADE]

my 08' 4.8 came with 3.23s stock and could hit 105 in 2nd lmao effin slow..jumped to 456s and damm!

[yellowbu]

my 08' 4.8 came with 3.23s stock and could hit 105 in 2nd lmao effin slow..jumped to 456s and damm!

Im going with 4.10s. How was the cruise rpm affected with the 56's? I dont wanna kill my fuel mileage.

[farmtruc]

there was a truck in here the other day, had 4.56's, about a 30" tall tire, slammed, ran really nice on the highway. i'd say about 65mph around 2400rpms.