66 Bronco Project
- totalchaos
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Re: 66 Bronco Project
Well I took my first drive down the road in it with the 4.10 gears in it..she handles well but wow I think shes geared way too low..I mean maybe if I hauled it to the trail but with those gears shes not street worthy..I thought at first my trani wasnt shifting into high gear..its a c4 with a hurst star shifter..seemed like more of a drag vehicle though..but I put it in drive and I could feel all all the gears kick in..heck I even went through and hit each one 1,2 then D and I could feel the last gear kick in from second but to drive it the rmps were skyrocketing and I wasnt moving that fast..before when I had the 3.54s in it I could cruise 70 no problem but at 70 now I would peg the rmps..anybody have any ideas?maybe the transfercase is geared real low?Im kicking around throwing my 3.54 gears back in but want some input before I do..
Im your huckleberry
- ZOSO
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Re: 66 Bronco Project
With 35's and 4.10's at 55mph you should be around 2600-2800rpm. If not then something isnt right.
Rob
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
- totalchaos
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Re: 66 Bronco Project
ZOSO wrote:With 35's and 4.10's at 55mph you should be around 2600-2800rpm. If not then something isnt right.
Maybe the overdrive isnt kicking in..thats about what it feels like seems like I should have another gear dont know what could of happened though
Im your huckleberry
- Jesus_man
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Re: 66 Bronco Project
Your t-case in high is going to be 1:1 and won't affect your final drive ratio. I assume a C4 does not have an OD? Are you sure you're not on low range??
Using this site: http://www.rocky-road.com/calculator.html
with 35's you should be running around 75mph at 3000rpms.
Grab your gps and hit the highway again and give us some hard numbers as to mph and rpms...can work backwards from there.
If I leave my tranny in 4th, with my setup, I could probably cruise 65 comfortably.
Also, you won't be happy with anything less than 4.10's on the trail, unless you stick to 3 and under rated trails. Anything more technical and you'll quickly realize low gearing is king. So the time comes to decide what you really want to do with the rig or...time for an Atlas where you can run your 3.73's, but still have a great crawl ratio for the trail...
J.D.
Using this site: http://www.rocky-road.com/calculator.html
with 35's you should be running around 75mph at 3000rpms.
Grab your gps and hit the highway again and give us some hard numbers as to mph and rpms...can work backwards from there.
If I leave my tranny in 4th, with my setup, I could probably cruise 65 comfortably.
Also, you won't be happy with anything less than 4.10's on the trail, unless you stick to 3 and under rated trails. Anything more technical and you'll quickly realize low gearing is king. So the time comes to decide what you really want to do with the rig or...time for an Atlas where you can run your 3.73's, but still have a great crawl ratio for the trail...
J.D.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
http://www.ucora.org
- crawlercreations
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Re: 66 Bronco Project
totalchaos wrote:crawlercreations wrote:Looks awesome!! You will be ready for the independence trail system in no time!! Jk, never take your bronco in there looking like that!!
lol not quite sure shes ready for indepedence I wish! Ill tear it down this winter and get it set up to hit the hard trails..hell I wouldnt mind throwing that kit you got in yours in mine..maybe you can do that for me? Im serious too..
No kits in mine. I built everything from the ground up.
There is a fine line between "hobby" and "mental illness"
- totalchaos
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Re: 66 Bronco Project
crawlercreations wrote:totalchaos wrote:crawlercreations wrote:Looks awesome!! You will be ready for the independence trail system in no time!! Jk, never take your bronco in there looking like that!!
lol not quite sure shes ready for indepedence I wish! Ill tear it down this winter and get it set up to hit the hard trails..hell I wouldnt mind throwing that kit you got in yours in mine..maybe you can do that for me? Im serious too..
No kits in mine. I built everything from the ground up.
Dont suppose ud want to build and install me one??lol I got the cash
Im your huckleberry
- ZOSO
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Re: 66 Bronco Project
totalchaos wrote:ZOSO wrote:With 35's and 4.10's at 55mph you should be around 2600-2800rpm. If not then something isnt right.
Maybe the overdrive isnt kicking in..thats about what it feels like seems like I should have another gear dont know what could of happened though
No OD on the C4. 1:1 is all you get. It's just something we all live with when you build a wheeler. Good highway means crappy wheelin unless you get overdrive and an atlas.
Rob
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
- totalchaos
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Re: 66 Bronco Project
Jesus_man wrote:Your t-case in high is going to be 1:1 and won't affect your final drive ratio. I assume a C4 does not have an OD? Are you sure you're not on low range??
Using this site: http://www.rocky-road.com/calculator.html
with 35's you should be running around 75mph at 3000rpms.
Grab your gps and hit the highway again and give us some hard numbers as to mph and rpms...can work backwards from there.
If I leave my tranny in 4th, with my setup, I could probably cruise 65 comfortably.
Also, you won't be happy with anything less than 4.10's on the trail, unless you stick to 3 and under rated trails. Anything more technical and you'll quickly realize low gearing is king. So the time comes to decide what you really want to do with the rig or...time for an Atlas where you can run your 3.73's, but still have a great crawl ratio for the trail...
J.D.
Im gonna go back out and check the transfer case I was going to do that when I pulled back in but I was almost out of gas..the t case is all the way forward though I know that..maybe its stuck in 4 hi or 4 low kinda makes sence Ill try to mess with it and take another run...I seriously need to install an rpm gauge but that was one of the things I was going to do this winter when I install a new dash with all new guages...I was just going off sound and it sounds like a pissed off monster truck doing 90 down the road but only going 40-50..your probly right...I hope so anyway..actually it wouldnt hurt to change out the fluid in that t case either who knows how long its been in there..
Im your huckleberry
- ZOSO
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Re: 66 Bronco Project
all the way forward to the dash is low range. pull it all the way back. thats 4 high.
Rob
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
- Jesus_man
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Re: 66 Bronco Project
Yeah, 50mph and screaming is low range. You'll be a bit happier in high range. You'll get about 40% more speed for the same rpms in high.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
http://www.ucora.org
- PonyCorral
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- totalchaos
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Re: 66 Bronco Project
Ok now I feel like a complete retard u guys were right I'm use to this new age crap and thought hi was straight up..damn well it works now..lol guess I should have drove her a little more before I started building here..lol anyway yes it runs so much better now that the tcase is in the right gear I'm probly gonna hear about this one for a while huh? Oh well thanks for the help guys as usual that's why I love this club!
Last edited by totalchaos on Wed Aug 24, 2011 8:53 pm, edited 1 time in total.
Im your huckleberry
- ZOSO
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Re: 66 Bronco Project
So far it's you and Chad in a club.........
Rob
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.
04 Mustang Cobra, KenneBell 2.2 feeding a lot of boost on E85. Tire shredding machine
New project: 77 Bronco Ranger, body work and more body work.
Very little left of a 72 durango tan explorer sport
- Entourage
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Re: 66 Bronco Project
Thanks Chaos took for taking some of the heat away from me. 
I know you have went through hell getting your truck together and the rear end has been one of the headaches - cool when it is something little like that.

I know you have went through hell getting your truck together and the rear end has been one of the headaches - cool when it is something little like that.
"I truly believe that good will outweigh evil, but there won't be peace on earth until the power of love overcomes the love of power" - Jimi Hendrix
- totalchaos
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Re: 66 Bronco Project
Entourage wrote:Thanks Chaos took for taking some of the heat away from me.
I know you have went through hell getting your truck together and the rear end has been one of the headaches - cool when it is something little like that.
Lol yeah I was about ready to tear into some gears and start swapping parts good thing I asked before I did or it really would have been a story to laugh about..ouch
Im your huckleberry
- Kinder
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Re: 66 Bronco Project
Chaos - you're killing me... lol, I'm glad you got it sorted out, I bet it was screaming.
Best to Date MPG: 26.6
- Rox Crusher
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Re: 66 Bronco Project
kinder wrote:Chaos - you're killing me... lol, I'm glad you got it sorted out, I bet it was screaming.
I bet that thing was nearing take-off
1977 Sport, 351w OBDII EFI motor, 4R70W auto, 4:88 gears, ARB lockers, 3.5" suspension, 33" tires.
- Jesus_man
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Re: 66 Bronco Project
Middle row, left knob...

Need me to get you one??
LOL! Glad it was something simple as well. BTDT and got the t-shirt!
Really tho, finding 2-low takes a LOT of practice! But finding 2-High and 4-low are the priorities!
J.D.

Need me to get you one??
LOL! Glad it was something simple as well. BTDT and got the t-shirt!
Really tho, finding 2-low takes a LOT of practice! But finding 2-High and 4-low are the priorities!
J.D.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
http://www.ucora.org
- totalchaos
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Re: 66 Bronco Project
Wow that transfer case pattern was totally different then what I thought guess I know now..and yeah she was taking off like a rocket poor thing..blow the cobwebs out of that sob! All I have left now is install the front bumper and winch and build the rear bumper and gas can holder then buy a spare..and its good to go planning a trip to eagle rock either the first or second week of sept if anyone wants to play..
Im your huckleberry
- Jesus_man
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Re: 66 Bronco Project
I would love to hit the trails with you. First weekend I am out for sure. Second weekend, my wife works Saturday morning, so that means I have my son with me. He's not old enough to hit the trails yet. But, I may be able to swing a baby sitter.
J.D.
J.D.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
http://www.ucora.org
- totalchaos
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Re: 66 Bronco Project
Jesus_man wrote:I would love to hit the trails with you. First weekend I am out for sure. Second weekend, my wife works Saturday morning, so that means I have my son with me. He's not old enough to hit the trails yet. But, I may be able to swing a baby sitter.
J.D.
Sounds like it will probly be during the week Id imagine.. unfortunatly I work weekends so we would probly head up for a 2-3 day trip monday-wed or something havent found out for sure yet but Ill let you know when I do know..
Im your huckleberry
- Jesus_man
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Re: 66 Bronco Project
Yeah, I am out during the week for sure...
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
http://www.ucora.org
- totalchaos
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Re: 66 Bronco Project
Well ran into another problem ill have to fix before I do anything drove the Bronco 15 miles into town to get some new plugs and wires and on the way back it started over heating real bad so I'm sure ill have to replace the water pump or thermostat or the dang radiator..all the luck
Im your huckleberry
- Jesus_man
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Re: 66 Bronco Project
Sorry to hear that. Hope you can get it up to snuff quickly. I am sure you will. You have made a lot of progress the last couple months!
J.D.
J.D.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
http://www.ucora.org
- totalchaos
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Re: 66 Bronco Project
I'm sure u guys have all replaced ur radiators With aliminum ones I saw one on ebay that was a 3 row and came with an electric fan is anyone running one of these or is anyone running electric fans and do they work good or at least better then this stock crap I don't want to have to mess with overheating issues seems every vehicle I get has them
Im your huckleberry
- totalchaos
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Re: 66 Bronco Project
Well I installed a new thermostat in it and still overheated I'm sure the radiator missing a fan shroud has a lot to do with it...guess the next step is to order that amunimum radiator with electric fan and see if that helps if not then order a new waterpump..
Im your huckleberry
- totalchaos
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Re: 66 Bronco Project
Got my aluminum radiator and my electric fan in and installed today kicked on when the motor warmed up correctly so I guess ill take it for a spin tomorrow and see if I solved my problem I hope so..then ill go ahead and install my front bumper and winch tomorrow still waiting for my rear bumper to be delivered then ill install it and hopefully be ready to wheel..
Im your huckleberry
- totalchaos
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Re: 66 Bronco Project
radiator and bumper installed along with winch
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Im your huckleberry
- Rox Crusher
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Re: 66 Bronco Project
me likey
I really like the looks of that flat black finish on the bumper, it goes great with the blue
brother
I really like the looks of that flat black finish on the bumper, it goes great with the blue
brother1977 Sport, 351w OBDII EFI motor, 4R70W auto, 4:88 gears, ARB lockers, 3.5" suspension, 33" tires.
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socofn
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