6 or 4 inch lift with 33s
#1
6 or 4 inch lift with 33s
This is just to ask you guys/girls your opinion. I have a 95 bronco and I have a 6 inch lift kit and a brand new set of 33 12.50s.
OK here's my thing I don't want to go any bigger on the Tires. Like I said I have a complete 6in kit should I
A. Get new 4in lift springs and blocks to make 4in lift.
Or
B. Run with the 6 inch lift I got.
Do you think the extra 2 inches is gonna make it look goofy? Or do you think it will look OK?
Thanks for any insight
OK here's my thing I don't want to go any bigger on the Tires. Like I said I have a complete 6in kit should I
A. Get new 4in lift springs and blocks to make 4in lift.
Or
B. Run with the 6 inch lift I got.
Do you think the extra 2 inches is gonna make it look goofy? Or do you think it will look OK?
Thanks for any insight
#2
Join Date: Jul 2013
Location: Camp Pendleton/Oceanside
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Well my 79 has a total of 5 inches lift and with 33s I think it could lose an inch if anything. but it also depends on what 33s you have because they aren't all the same. I would say that if you have more than 2 inches of EXTRA clearance for the tires (and you should with 33s) I would go to a 4 inch lift. There isn't any reason to have over-lift on your truck. Do you ever plan on switching to bigger tires?
#4
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#6
6inch lift on 33's will look a bit goofy. Many people throw 35's on with a 4inch lift. If you have them already with the 6in already installed throw them on anyways and take some pics. Otherwise you might just want to stay with a 4in with the 33's. I can run 33's on my 95' with only a 2.5" lift. I did have to space the bumper out.
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#9
Join Date: Jul 2013
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If you DO decide to go with 35s you should no longer ignore your stock gearing (assuming it IS stock) 33s to 35s may not seem like much but it is sort of the tipping point usually for most bronco engines. You already are going to lose power with 33s but 35s with stock gearing is probably going to really bog it down. Like most everyone says (And you said right off the bat) instead of going to bigger tires, just go to 4''
#10
I ran my '86 with 33x12.50's with no lift for most of its years without issue other than minor rubbing at full lock. I ran one set of Buckshot 35's (my favorite set in 16 yrs) with a narrower aspect ratio (p or q) with no issues at all. IMO the only reason for lift is to accommodate taller tires and tires should fill the added space.
Also, IMO the reason for taller tires is to get everything farther off the ground, as the only times I ever stuck my Bronco with track-lock/limited slip was because something other than tires was on the ground.
Oh, and I kept the 3.73 gears and my built-up 302 (4-spd low range) would still jump whenever I punched the gas or haul my horse trailer in the woods even with the 35's.
Also, IMO the reason for taller tires is to get everything farther off the ground, as the only times I ever stuck my Bronco with track-lock/limited slip was because something other than tires was on the ground.
Oh, and I kept the 3.73 gears and my built-up 302 (4-spd low range) would still jump whenever I punched the gas or haul my horse trailer in the woods even with the 35's.
#11
Ladies and gentlemen, the warnings about re-gearing are well founded! OEM the Bronco rolled out with the approximate equivalent of 30's (235/75/R15). Changing tire sizes changes the amount of ground covered with every revolution. Below is a short list using the actual information provided by BF Goodrich for the All-Terrain K/O (I figured why not use a very common tire that we all recognize). Granted this is for one particular tire but I would challenge that no matter what tire you look up, the story will be the same across the board.
717 tire rev's per mile with 235/75R15's (OEM/stock) gives you engine RPM's of 2467 at 60 MPH without overdrive.
677 tire rev's per mile with 31's gives you engine RPM's of 2331 at 60 MPH without overdrive.
636 tire rev's per mile with 33's gives you engine RPM's of 2189 at 60 MPH without overdrive.
599 tire rev's per mile with 35's gives you engine RPM's of 2062 at 60 MPH without overdrive.
Considering that the average OEM (stock) V8 doesn't even start getting into its power band until 2300-2800 RPM's, leaving the stock 3.55:1 gearing in a truck with anything larger than 31's is going to KILL your passing and hill-climbing power along with fuel economy. You may still "feel" like it is pulling like mad but at what cost in fuel and wear and tear on the engine? To look at it, you might think, "Hey I'm turning fewer revolutions and getting just as far or farther at the same speed so how can that be bad?" The problem is that you sacrifice critical HP when the engine isn't spinning fast enough to be within its power band. The short translation is... you are destroying fuel economy and reserve power availability by leaving the stock gearing in place with larger diameter tires. Re-gear folks... your truck and your wallet will appreciate it.
717 tire rev's per mile with 235/75R15's (OEM/stock) gives you engine RPM's of 2467 at 60 MPH without overdrive.
677 tire rev's per mile with 31's gives you engine RPM's of 2331 at 60 MPH without overdrive.
636 tire rev's per mile with 33's gives you engine RPM's of 2189 at 60 MPH without overdrive.
599 tire rev's per mile with 35's gives you engine RPM's of 2062 at 60 MPH without overdrive.
Considering that the average OEM (stock) V8 doesn't even start getting into its power band until 2300-2800 RPM's, leaving the stock 3.55:1 gearing in a truck with anything larger than 31's is going to KILL your passing and hill-climbing power along with fuel economy. You may still "feel" like it is pulling like mad but at what cost in fuel and wear and tear on the engine? To look at it, you might think, "Hey I'm turning fewer revolutions and getting just as far or farther at the same speed so how can that be bad?" The problem is that you sacrifice critical HP when the engine isn't spinning fast enough to be within its power band. The short translation is... you are destroying fuel economy and reserve power availability by leaving the stock gearing in place with larger diameter tires. Re-gear folks... your truck and your wallet will appreciate it.
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#13
Greystreak92 you make a good point but it mostly applies to the V8s these broncos came stock with but I swapped out the busted 351 for a 300 l6 which make it's power at lower rpms around 2000 rpm with 3.55 gear and 33s and overdrive transmission 60 to 70 MPH should put me right the engines sweet spot and increase mileage
#14
Greystreak92 you make a good point but it mostly applies to the V8s these broncos came stock with but I swapped out the busted 351 for a 300 l6 which make it's power at lower rpms around 2000 rpm with 3.55 gear and 33s and overdrive transmission 60 to 70 MPH should put me right the engines sweet spot and increase mileage
#15