The Leveling Kit Thread
5.0 DOHC V8 | 7.3 Gdzilla
Joined: Apr 2017
Posts: 3,987
Likes: 2,077
From: California and Utah
^ ^ ^ That's correct, Phil.
I would think you could simply drive around it.
What that degree of tire size change does, with the 6- speed, is make 1st through 5th act like 2nd through 6th.
I would think you could simply drive around it.
What that degree of tire size change does, with the 6- speed, is make 1st through 5th act like 2nd through 6th.
Junior Member
Joined: Jan 2021
Posts: 15
Likes: 4
lol JK.
so you guys are saying with a flash tune, it would change the shifting points in the transmission. Thus making it shift like a 3.73 or 3.55? Are there any cons to this?
5.0 DOHC V8 | 7.3 Gdzilla
Joined: Apr 2017
Posts: 3,987
Likes: 2,077
From: California and Utah
Thus making it shift like a 3.73 or 3.55?
No, and don't believe anyone who says it does. That's nothing but snake oil.
A tune will have altered spark and fuel maps, perhaps camshaft phase alterations too.
The transmission gear ratios are fixed. The axle gearing is fixed (not variable).
A tune may also alter shift POINTS (on the tach) and shift *quality* (the speed with which each clutch pack engages and disengages) can be altered, yes.
Gear ratios? No. Not until you change the ring-and-pinion gear set.
Junior Member
Joined: Jan 2021
Posts: 15
Likes: 4
No, and don't believe anyone who says it does. That's nothing but snake oil.
A tune will have altered spark and fuel maps, perhaps camshaft phase alterations too.
The transmission gear ratios are fixed. The axle gearing is fixed (not variable).
A tune may also alter shift POINTS (on the tach) and shift *quality* (the speed with which each clutch pack engages and disengages) can be altered, yes.
Gear ratios? No. Not until you change the ring-and-pinion gear set.
A tune will have altered spark and fuel maps, perhaps camshaft phase alterations too.
The transmission gear ratios are fixed. The axle gearing is fixed (not variable).
A tune may also alter shift POINTS (on the tach) and shift *quality* (the speed with which each clutch pack engages and disengages) can be altered, yes.
Gear ratios? No. Not until you change the ring-and-pinion gear set.
Senior Member
Joined: Sep 2017
Posts: 1,595
Likes: 375
Don't overdo it on wheels or tires unless you want to have a truck that you hate. The groups constantly have people trying to unload their massive 22x12's for "stocks," because they want out of that big ol' mess. I went w/ 20x9.5's and only ONE size bigger tire than stock. Happy with that. Don't want bigger.
Senior Member
Joined: Jun 2009
Posts: 328
Likes: 44
From: Folsom, LA
Don't overdo it on wheels or tires unless you want to have a truck that you hate. The groups constantly have people trying to unload their massive 22x12's for "stocks," because they want out of that big ol' mess. I went w/ 20x9.5's and only ONE size bigger tire than stock. Happy with that. Don't want bigger.
Don't overdo it on wheels or tires unless you want to have a truck that you hate. The groups constantly have people trying to unload their massive 22x12's for "stocks," because they want out of that big ol' mess. I went w/ 20x9.5's and only ONE size bigger tire than stock. Happy with that. Don't want bigger.
Junior Member
Joined: Jan 2021
Posts: 15
Likes: 4
Don't overdo it on wheels or tires unless you want to have a truck that you hate. The groups constantly have people trying to unload their massive 22x12's for "stocks," because they want out of that big ol' mess. I went w/ 20x9.5's and only ONE size bigger tire than stock. Happy with that. Don't want bigger.
Well the stock 275/65/18s measure 32.1 new. The 305/65/17 measure 32.6. I think (and hope) I should be ok. This is all according to tire rack. I just measured the 315/70/17 this morning and they measured 33... they also have about 5,000 miles of tread left. Supposed to measure 34.4 new.
Well the stock 275/65/18s measure 32.1 new. The 305/65/17 measure 32.6. I think (and hope) I should be ok. This is all according to tire rack. I just measured the 315/70/17 this morning and they measured 33... they also have about 5,000 miles of tread left. Supposed to measure 34.4 new.
