whats your RPM at 70mph, with what gears.

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Apr 29, 2008 | 10:46 PM

#21

trever1t

2nd fastest 5.3 ECSB

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From: NorCal

here is that excel sheet for those that haven't seen it..

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Copy of Shift Points.zip (22.3 KB, 86 views)

Apr 29, 2008 | 11:20 PM

#22

95 bright teal

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Joined: Dec 2007

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From: Mesa, AZ

3.73
245/70/17 30.5"
70 at 2000rpms

Apr 29, 2008 | 11:33 PM

#23

dirt track racer 81

TECH Senior Member

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From: Hennessey, Oklahoma

if your worried bout gas mileage you dont need to be modding your truck..

Apr 30, 2008 | 01:38 AM

#24

colekill

Thread Starter

KickinAssAndTakinNames

Joined: Apr 2007

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From: Seabrook, TX

i allready pay 85 bucks a tank. just wondering how much more its going to suck

Apr 30, 2008 | 08:29 AM

#25

magnetized

TECH Resident

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From: Baton Rouge, LA

About 2300 rpm, 4.11s, 285/50 R 20s, approx. 17.5-18 mostly city

Apr 30, 2008 | 09:21 AM

#26

trever1t

2nd fastest 5.3 ECSB

iTrader: (14)

Joined: Oct 2005

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From: NorCal

Quote:

Originally Posted by dirt track racer 81

if your worried bout gas mileage you dont need to be modding your truck..

Quote of the day!

Apr 30, 2008 | 10:09 AM

#27

HotRodV6

SyTy Speed Shop

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Joined: Feb 2006

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From: Port Huron MI

Well no matter what gears or tires your running, that 3K stall is going to kill any chance of getting decent MPG. Especially around town.

On my truck i have stock 3.42's stock 235/75 tires 29.6" tall and at 70 im right at or just under 2K RPMS and around town i get 15-16 and have gotten as high s 19-20 on a long freeway trip. Only mods i have done are 05+ Factory efans w/nelson harness and replaced the factory mufler with a Dynomax Ultraflow.

Apr 30, 2008 | 11:57 AM

#28

GoatChs

TECH Enthusiast

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From: Far East Bay - Norcal

01 Yukon 2WD
Power:
LS6 block 383ci, GT2-3, AFR 225s, MP122HH, JBA headers, Magnaflow catted y-pipe, Corsa touring catback

Drivetrain/Wheels/Tires:
FLT 4L60E Lvl 4, Yank TT2600, 3.90 gears, 20x9 Denali Repros, 275/45R20 (29.7" dia.)

Speed/RPM/MPG:
70 MPH = 2150 RPM = 18 MPG