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Old 02-27-2016, 09:01 AM   #211
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I am happy to hear that you are just taking the winter off, it would be a shame to not finish your project, you will love the end result, let me know if you hit any more snags, it looks like you are close.
I could get it done a lot faster if I'd just stop running off to ride my tricycle.Click image for larger version

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But then that's why I left for the winter so I could ride my little trike.
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Old 02-27-2016, 11:04 AM   #212
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454 to Cummins

Mel,

I know where that is, ate at Cattlemans once and the nearby but I think gone rib stand gown the road.

And bought about 3 pair of boots at Little Joes.
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Old 02-28-2016, 08:30 AM   #213
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1986 34.5' Airstream 345
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Mel,

I know where that is, ate at Cattlemans once and the nearby but I think gone rib stand gown the road.

And bought about 3 pair of boots at Little Joes.
Cattleman's is the best steak house in OKC for sure! We don't go there very often as I don't eat much red meat..... But when I do
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Old 03-06-2016, 07:44 PM   #214
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Well boys and girls I have arrived home again. Tucson was nice, but home is home,
Walked around looking at what to do last/next. Took a while to locate the parts and get started in a forward direction.
found my new (right one this time) banjo bolt for my fuel pressure gauge. Then I had to find the hardware......
Then I turn to the mounting of 4 more gauges. I made a medal holder, but that didn't pan out, so, today I start working on a new gauge holder making it out of 3/8" plywood to mount to the windshield post. I glued and nailed this crud thing together. Then I'll see if it will fit.....
On another note: The rear end gear. Now it's a 4.56/1. I did a conversion program and the best I can figure at 1900 I'll be doing about 45mph. Anyone know if there's a 2 speed rear end that will fit in this thing? Anyone know what rear end is in these things?
Boy do I have work piled up around here!
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Old 03-06-2016, 08:19 PM   #215
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Most of them have a Dana 70HD which has 4" axle tubes and disc brakes. You can get different gear sets but if you go numerically below 4:11 you need a different carrier. Never heard of a 2 speed option. Gearvendors is another option, spendy but gives you more gear options going down the highway. If I remember correctly 65 mph is around 2400-2500 rpm in overdrive with a Gearvendors.
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Old 03-07-2016, 08:25 AM   #216
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Don,
You have an overdrive transmission with the GV?

I have the 4L80e now which is 0.75 OD which gives a finely drive ratio of 3.42.
At 70 mph was running 2300 rpm in OD w/torque converter locked.
With a 4.10 would run 2100 rpm at 70 mph.
Cummins red line is 1900 rpm. Can change the IP spring and get 2300 rpm but not something I want to do..... Yet

Gearvendor is an option, but $4000 plus? GV would give the 4.56 a 2.49 in double OD; 1700 rpm at 70 mph. 4.10 and double OD is 2.24 1525 rpm at 70 mph.

Looking at the numbers, the GV may be my best (only) option. don't want to run down the road at max rpm doing 56 mph, or change to the 4.10 and max speed of 63 mph

Good news is, I found a down load for my lap top to communicate with the transmission controller. No thanks to TCI. Im very disappointed with there total lack of support.
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Old 03-07-2016, 12:39 PM   #217
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Don,
You have an overdrive transmission with the GV?

I have the 4L80e now which is 0.75 OD which gives a finely drive ratio of 3.42.
At 70 mph was running 2300 rpm in OD w/torque converter locked.
With a 4.10 would run 2100 rpm at 70 mph.
Cummins red line is 1900 rpm. Can change the IP spring and get 2300 rpm but not something I want to do..... Yet

Gearvendor is an option, but $4000 plus? GV would give the 4.56 a 2.49 in double OD; 1700 rpm at 70 mph. 4.10 and double OD is 2.24 1525 rpm at 70 mph.

Looking at the numbers, the GV may be my best (only) option. don't want to run down the road at max rpm doing 56 mph, or change to the 4.10 and max speed of 63 mph

Good news is, I found a down load for my lap top to communicate with the transmission controller. No thanks to TCI. Im very disappointed with there total lack of support.
I assume you are asking me, I'm Dan not Don. At any rate I have a Gearvendors behind a non overdrive TH450 and Isuzu.

I think there may be some confusion of the red line of your Cummins. The max torque is at 1600 rpm, hp rating is at 2500 rpm and max governed speed is 2700 rpm. This site is a good info source. http://cumminshub.com/12v.html

Your Cummins will be happy at 2300 doing 70 mph with the 4L80e. If you feel the need for more speed then the Gearvendors is in your future. You can change axle ratio but then you pay with less power from the stoplight.

My old Isuzu is no ball of fire but 65 mph in overdrive is very comfortable going down the highway
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Old 03-10-2016, 06:25 PM   #218
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Sorry Dan.... What rear gears you have?
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Old 03-10-2016, 06:31 PM   #219
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Been working on a gauge tower for the 4 gauges I'm adding w/the diesel. This is my fourth prototype. The second is on the dash. I bought a couple, but they are for the slope of a pickup. I still may try to make one out of metal
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Old 03-10-2016, 08:06 PM   #220
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I just check and the Gear Vendor to fit my application is $3295+55 shipping. I'd need a longer e-brake cable and a shorter drive shaft.
Trying to decide if I what to put a 3000 rpm spring kit in it????????
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Old 03-10-2016, 08:30 PM   #221
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Sorry Dan.... What rear gears you have?
I have 4.56:1 gears. I think all the P-30 Airstream used the 4.56 gear.

For the Gearvendors just take your front driveshaft to a local driveshaft shop and have it cut to size and rebalanced. Mine needed to be straightened also. The whole thing cost about $150. The parking brake is moved back the length of the unit so they sell a short extension cable. They also sell a deep sump oil pan so the oil stays a little cooler.
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Old 03-11-2016, 07:08 AM   #222
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Just for reference, my 360 runs about 2000 rpms at 62 mph which really seems to be the sweet spot. The Allison ratio in 6th is .65:1.

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Old 03-15-2016, 01:40 PM   #223
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Tach Flywheel Teeth

I am trying to get my Tach to work, decided to go with the Dakota Digital DSL-2E since it seems to be the most reliable system that seems simple to set up if you have the correct information. The information I am missing is the amount of teeth I have on my flywheel, I have a 1988 6BT with an Allison AT545 behind it. I will do some digging, but I thought one or more of you would know.
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Old 03-15-2016, 04:54 PM   #224
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I am trying to get my Tach to work, decided to go with the Dakota Digital DSL-2E since it seems to be the most reliable system that seems simple to set up if you have the correct information. The information I am missing is the amount of teeth I have on my flywheel, I have a 1988 6BT with an Allison AT545 behind it. I will do some digging, but I thought one or more of you would know.
I gave up on that and went with the 'R' terminate off the back of the alternator. Just need to know the number of staters, ratio of drive pulley to alternator pulley. I went with a 1-wire alternator so the voltage divider had to go, cause it needs voltage to excite it.


Just finished installing a electric wrench 100% duty cycle reply to replace the voltage divider.....
Of course nothing will change w/o a fight. All the connectors are 1/4" and the new relay is 7/16" studs.
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Now the 55 amp converter I installed in 2011 to rid myself of the battery frying Univolte has quit.
Found a 75 amp I may buy. I don't remember the amp size of the Univolt. I guess 55 amp wasn't big enough.
http://www.americanrvcompany.com/Pow...iler-Camper-RV

Now I have a used voltage divider.... If anyone needs one.
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