I have the wrong gears in my Yukon!?!?!?
Jan 9, 2006 | 03:56 PM
#22
Thread Starter
TECH Junkie
Joined: Mar 2003
Posts: 3,271
Likes: 0
From: Katy, TX
Originally Posted by ranwalk
Just thought of this. The tachometer may not be correct either. Need to have it checked for acuracy also.
Jan 9, 2006 | 04:03 PM
#23
Thread Starter
TECH Junkie
Joined: Mar 2003
Posts: 3,271
Likes: 0
From: Katy, TX
Originally Posted by ZRO26T
My '02 Yukon has 3.42s. At 75mph, the tach sits at 1900rpm (265/70/16 Firestones). At 70 mph, RPMs are closer to 1800. At 90mph, RPMs are at 2500.
Just thought I'd throw $0.02 at ya'll for comparison purposes. BTW, my Yukon hauls from a stop for it's size... enuff to turn 15.9s 1/4 mile at about 80-sumthin mph (bone stock).
Just thought I'd throw $0.02 at ya'll for comparison purposes. BTW, my Yukon hauls from a stop for it's size... enuff to turn 15.9s 1/4 mile at about 80-sumthin mph (bone stock).
I am putting it up on the lift tomorrow to change the oil, I'll spin the tires and check that out while I'm at it. I just cant believe they would mis mark or put in the wrong gears. Thats just horrable workmanship, they dont even know what parts are going where.
If I do end up having 4.10's and not 3.42's, I'm calling GM first to see what they will do. Then If I dont like there answer I'm calling every newspaper, magazine, and TV station that will listen. All GM needs right now is alot of negative press about how there vehicles are being put together with what ever parts are laying around.
Jan 9, 2006 | 04:21 PM
#24
Joined: Apr 2004
Posts: 16,820
Likes: 2
From: In a van DOWN BY THE RIVER
just do the mph x gear x 336 divided by the tire size. that will give ya the gears. For instance do 60mph x 373 x 336 an divide it by the tire size. Make sure to do it in 3rd gear. It works, 2592 rpms with that number, gear and 29 inch tire... If you are doing about 2600 rpm at 60 in 3rd you have 3.73
Jan 9, 2006 | 05:04 PM
#25
Thread Starter
TECH Junkie
Joined: Mar 2003
Posts: 3,271
Likes: 0
From: Katy, TX
Went for a ride with 4.8T who has 3.73's also.
I HAVE 4.10's!!!!!!!!!!!!!!!!!! He was turning 1850rpms at 70 and 2000 even at 75mph.
How the hell does this happen? I cant believe a mistake like this could be made, and I dont want to turn my Yukon over to the dealer for 2-3 weeks so they can swap gears. I think its total BS!!!!!!!!!!! Maybe they could shut me up with a new Denali. LOL j/k.
I HAVE 4.10's!!!!!!!!!!!!!!!!!! He was turning 1850rpms at 70 and 2000 even at 75mph.
How the hell does this happen? I cant believe a mistake like this could be made, and I dont want to turn my Yukon over to the dealer for 2-3 weeks so they can swap gears. I think its total BS!!!!!!!!!!! Maybe they could shut me up with a new Denali. LOL j/k.
Jan 9, 2006 | 06:34 PM
#26
Jan 9, 2006 | 06:50 PM
#28
TECH Enthusiast
Joined: Aug 2005
Posts: 538
Likes: 0
Maybe some1 had a deal going on with the dealer and they asked the 4.10s to be installed, but at the end he might have gone to another vehicle or just didnt work out. i have 265/70/17 on my truck and i turn a little bit over 2000rpm at 70 and about 2300 at about 75 i have 4.10s
Jan 9, 2006 | 07:16 PM
#29
Thread Starter
TECH Junkie
Joined: Mar 2003
Posts: 3,271
Likes: 0
From: Katy, TX
Originally Posted by 5.3AlmnBlk
Maybe some1 had a deal going on with the dealer and they asked the 4.10s to be installed, but at the end he might have gone to another vehicle or just didnt work out. i have 265/70/17 on my truck and i turn a little bit over 2000rpm at 70 and about 2300 at about 75 i have 4.10s
Jan 9, 2006 | 07:19 PM
#30
TECH Regular
Joined: Dec 2002
Posts: 486
Likes: 0
From: Pensacola, FL
Originally Posted by Snake Eater
I HAVE 4.10's!!!!!!!!!!!!!!!!!!