Author Topic: The Bus (Read 182378 times)

stlaser · « **Reply #100 on:** December 20, 2015, 07:38:02 PM »

Metal Supermarkets will sell you that stuff reasonable...

Nate · « **Reply #101 on:** December 20, 2015, 07:50:49 PM »

can anybody say for sure if a NBS front diff will fit into LB7?

JR · « **Reply #102 on:** December 20, 2015, 09:01:07 PM »

Ebay has all kinds off sizes and shapes. Some sell by length too.

Pretty sure all the under carriage is the same up to 2010. Then they started using the water formed frames. I would say for sure from 2001-2006, but my lift is for use from 2001 to 2010 so I based it on that.

KensAuto · « **Reply #103 on:** December 20, 2015, 09:08:19 PM »

Heck, I've even bought some metal stock off amazon in a pinch.

Flyin6 · « **Reply #104 on:** December 21, 2015, 10:17:51 AM »

Quote from: nmeyer414 on December 20, 2015, 07:50:49 PM

can anybody say for sure if a NBS front diff will fit into LB7?

I'm not sure what years you're talking about with the NBS reference. I can say that starting in 2011, the LML's the carrier housing is different, although housing the same AAM 9.25 gear set.

EL TATE · « **Reply #105 on:** December 21, 2015, 01:46:49 PM »

9.25 GM ifs applications excluding H2 hummer:

'88-'10 will interchange. Bushings differ internally 88-02, and 03-10 but that's it. all straight swap.

IF you have to remove the driver's side stub, pull the vent tube/breather assembly and get a looong punch. through that access hole, you should be able to punch the center of the stub shaft from the inside while a buddy slide hammers from the outside, greatly increasing your success rate while reducing the chance of breaking the case half or your toes after kicking the dog in frustration.

JR · « **Reply #106 on:** December 21, 2015, 01:56:54 PM »

I'll remember that Tate. I have my extra front to build for the max.

Nate · « **Reply #107 on:** December 21, 2015, 03:25:11 PM »

that's what I was looking for don. I was just trying to give TRN options for when he chooses to tackle this.

Bigdave_185 · « **Reply #108 on:** December 21, 2015, 04:16:19 PM »

Solid axle swap that monster and solve the GM problem

Raising boys into RealMen!!

TexasRedNeck · « **Reply #109 on:** December 21, 2015, 08:37:24 PM »

Meh. I like the softer ride of the IFS. Tate so a diff out of a 2010 will bolt up to my 2001? Good to know. I'll keep an eye out for a spare. I'd go 4:10 if I had a six speed. But with 35s that may be a bit low for a five speed.

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Bigdave_185 · « **Reply #110 on:** December 21, 2015, 11:09:27 PM »

I thought I had been told or read that all Alison's are six speeds they just need to be reprogrammed or something to that nature?

Raising boys into RealMen!!

Dawg25385 · « **Reply #111 on:** December 21, 2015, 11:20:24 PM »

You can get the fleece module that lets you manually control it via the steering column shift lever a la the 6 speed, that might be what you're thinkin of.

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Bigdave_185 · « **Reply #112 on:** December 22, 2015, 04:58:55 AM »

I do believe so.

Raising boys into RealMen!!

JR · « **Reply #113 on:** December 22, 2015, 12:54:38 PM »

You need a new valve body to make the 5 a 6 speed. Then you have to control it, the PCM wouldn't know you had a 6 speed.

All I see from Fleece is the TAP shift for the topkick and Lockup over ride. Is there something not shown?

Dawg25385 · « **Reply #114 on:** December 22, 2015, 01:15:53 PM »

Quote from: JR on December 22, 2015, 12:54:38 PM

You need a new valve body to make the 5 a 6 speed. Then you have to control it, the PCM wouldn't know you had a 6 speed.

All I see from Fleece is the TAP shift for the topkick and Lockup over ride. Is there something not shown?

That's what i was referring to. Didn't know you could do the valve body swap/pcm upgrade on the old ones...

Not sure why you'd want to put the money in for that... maybe for hwy mileage benefit? I lock out 6th gear when towing most of the time anyway.

JR · « **Reply #115 on:** December 22, 2015, 02:44:36 PM »

Heck, with 35s and stock gears I lock it out for just regular driving. Tate said the 4.56 will bring it back to stock rpm. Right now at 70mph I see 1900.

That valve body is around 2k. Might be better to just get a 6 speed tranny since they all need upgrading.

Bigdave_185 · « **Reply #116 on:** December 22, 2015, 06:10:12 PM »

$6k trans build would be awesome for this thread, great how-to.

Raising boys into RealMen!!

TexasRedNeck · « **Reply #117 on:** December 22, 2015, 08:42:05 PM »

Ha. I already have a 6k tranny I this truck. Will hold 850 at the rear wheels. In 5th at 70 with 35s what will the RPMs be?

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Flyin6 · « **Reply #118 on:** December 22, 2015, 08:54:31 PM »

Ya know, I saw this happen before.

Started with fixin' a few things, then addin' some more things

Then changin' a few more things...

rasimmo · « **Reply #119 on:** December 22, 2015, 08:56:36 PM »

Quote from: TexasRedNeck on December 22, 2015, 08:42:05 PM

Ha. I already have a 6k tranny I this truck. Will hold 850 at the rear wheels. In 5th at 70 with 35s what will the RPMs be?

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1780 according to the calculator in the sticky

TexasRedNeck · « **Reply #120 on:** December 22, 2015, 09:32:14 PM »

Ras sorry for being lazy. Is that 4:10? And assuming 5th is .71?

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JR · « **Reply #121 on:** December 22, 2015, 09:57:20 PM »

My dmax with 35s, stock 3.73 at 70mph is 1900rpm in 5th. Lugs a little in 6th (high egt-load) but does it fine.

TexasRedNeck · « **Reply #122 on:** December 23, 2015, 03:40:25 PM »

So if I get the redneck math right the addition of the 6th gear will just about cover the increase in rpm for the 4:11

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rasimmo · « **Reply #123 on:** December 23, 2015, 03:53:47 PM »

I was bored so I plugged more numbers in that calculator.
5 th (.71) at 70 with 3.73 = 1780 rpm
6 th (.62) at 70 with 4.10 = 1708 rpm
5 the at 70 with 4.10 = 1956

That is according to that calculator not my redneck math.

TexasRedNeck · « **Reply #124 on:** December 23, 2015, 03:57:43 PM »

Close enough for gov work. !

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JR · « **Reply #125 on:** December 23, 2015, 04:02:44 PM »

What about 35 in tires at 75 with 4.56?

EL TATE · « **Reply #126 on:** December 23, 2015, 04:28:42 PM »

Quote from: JR on December 23, 2015, 04:02:44 PM

What about 35 in tires at 75 with 4.56?

3.10 1.81 1.41 1.00 0.71 1-5 gears
http://www.ringpinion.com/Calculators/Calc_RPM.aspx
2331 RPM at 75MPH
Click the Transmission Gear Ratio Chart link.

Bigdave_185 · « **Reply #127 on:** December 23, 2015, 06:45:39 PM »

Just add two chargers and call it a day

Raising boys into RealMen!!

JR · « **Reply #128 on:** December 23, 2015, 07:12:13 PM »

Hmm, I just ran mine with 4.56 and 4.10, 35 inch tire based on .61 OD of the ally.

4.56 is 2000 rpm at 75mph.

4.10 is 1800 rpm at 75 mph.

Flyin6 · « **Reply #129 on:** December 23, 2015, 08:59:04 PM »

Well, I do have 35" tires and 4.56 gears with the 6 speed ally. At 75 to 80 it really starts to sing. I think the 4.56 is too much gear for a powered up motor pushing a 35" tire

JR · « **Reply #130 on:** December 23, 2015, 11:45:49 PM »

I got the 4.56 on Tates advice. I rarely get past 75 even on road trips.

4.10s don't seem like enough and 4.56 are just a tad high if you keep up those speeds and I have followed how you talk about it.

4.27s would be nice but don't think they are made for the f/r of this thing.

I like 1800-1900 rpm. Load seems OK, egt down about 100 and you know the saying about HP to go so fast. 4 x the HP to go twice as fast.

Maybe 36's for your new tires?

TexasRedNeck · « **Reply #131 on:** December 24, 2015, 08:54:31 AM »

Well I assume it still has the 3:73 in it but I'll find out. It runs like a scalded dog with 37s on it. 35s should be fun.

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Bigdave_185 · « **Reply #132 on:** December 24, 2015, 10:52:33 AM »

Trn what all is done motor wise to this truck. You mentioned you have a built trans?

I would trade my truck for a red sled all day long If I could find one

Raising boys into RealMen!!

TexasRedNeck · « **Reply #133 on:** December 24, 2015, 11:59:36 AM »

EFI live with dsp5 from Kory. Banks big head waste gate upgrade. AD165 and exhaust. May look at a compound later.

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TexasRedNeck · « **Reply #134 on:** December 24, 2015, 05:04:37 PM »

Just ordered a new Redhead steering box. I'm determined to do the anti-Norm build. It had a little slack at 137k but I want a new feeling truck when I'm done. I have a new door panel for the driver side and a new power mirror switch. This should be nice enough for a daily driver.

As much as I love the roar of the LB7 straight pipes out the side in front of the rear wheel I'm probably going to put a new system with a muffler on it.

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BobbyB · « **Reply #135 on:** December 24, 2015, 05:41:24 PM »

Quote from: TexasRedNeck on December 24, 2015, 05:04:37 PM

As much as I love the roar of the LB7 straight pipes out the side in front of the rear wheel I'm probably going to put a .....

Hood stack! Do it, with a flapper, polished chrome obviously. ;D

Please don't...

TexasRedNeck · « **Reply #136 on:** December 24, 2015, 05:47:23 PM »

Rofl. I could see the wife driving it to the mall with a hood stack.....

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Bigdave_185 · « **Reply #137 on:** December 25, 2015, 12:12:28 AM »

Quote from: BobbyB on December 24, 2015, 05:41:24 PM

Quote from: TexasRedNeck on December 24, 2015, 05:04:37 PM
As much as I love the roar of the LB7 straight pipes out the side in front of the rear wheel I'm probably going to put a .....

Hood stack! Do it, with a flapper, polished chrome obviously. ;D

Please don't...

I say go go go on this. No joke. I want to see it

Raising boys into RealMen!!

JR · « **Reply #138 on:** December 25, 2015, 12:49:07 AM »

Quote from: TexasRedNeck on December 24, 2015, 05:47:23 PM

Rofl. I could see the wife driving it to the mall with a hood stack.....

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And why not??????

Bigdave_185 · « **Reply #139 on:** December 25, 2015, 01:20:01 AM »

Tex next time your under the red sled will you take a few photos of your side dump exhaust please. I am interested in doing that instead of the under my bed dump.

Raising boys into RealMen!!

TexasRedNeck · « **Reply #140 on:** December 25, 2015, 08:25:09 AM »

Will do. It was very simple. You can have first dibs on it when it comes off.

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Bigdave_185 · « **Reply #141 on:** December 25, 2015, 08:29:43 AM »

I wonder if cause I have a short bed it would be to close to my rear tire. 1500 degrees is kinda warm for tire rubber I think.

Raising boys into RealMen!!

Bigdave_185 · « **Reply #142 on:** December 25, 2015, 08:30:11 AM »

Merry Christmas Tex. Get back to presents with them kids

Raising boys into RealMen!!

BobbyB · « **Reply #143 on:** December 25, 2015, 10:46:24 AM »

Quote from: TexasRedNeck on December 24, 2015, 05:47:23 PM

Rofl. I could see the wife driving it to the mall with a hood stack.....

Is she smiling? If yes, is it a real smile or one of those "he's going to regret this decision when I get home" smiles?

Quote from: Bigdave_185 on December 25, 2015, 08:29:43 AM

I wonder if cause I have a short bed it would be to close to my rear tire. 1500 degrees is kinda warm for tire rubber I think.

You should be able to shorten the pipe leading to the rear probably past the cab area. I've never done it but I'm going to take a guess and say people shorten them up when they do stacks, so the process should be the same.

Bigdave_185 · « **Reply #144 on:** December 25, 2015, 11:36:05 AM »

Just roll the elbow down n out.

Raising boys into RealMen!!

rasimmo · « **Reply #145 on:** December 25, 2015, 11:43:48 AM »

Quote from: Bigdave_185 on December 25, 2015, 08:29:43 AM

I wonder if cause I have a short bed it would be to close to my rear tire. 1500 degrees is kinda warm for tire rubber I think.

Raising boys into RealMen!!

If it's 1500 back there the tires will be the least of your worries. The melted pistons dripping into the crankcase would be more of a concern at that point. ;D

I'm bored so I had to give somebody a hard time today.

Bigdave_185 · « **Reply #146 on:** December 25, 2015, 01:20:49 PM »

I haven't had a working egt probe in awhile but I know she runs hot and have seen the burst of 1600 on freeway pulls

Raising boys into RealMen!!

Flyin6 · « **Reply #147 on:** December 25, 2015, 05:23:24 PM »

Quote from: Bigdave_185 on December 25, 2015, 01:20:01 AM

Tex next time your under the red sled will you take a few photos of your side dump exhaust please. I am interested in doing that instead of the under my bed dump.

Raising boys into RealMen!!

Dave,
Easy
If you're using most of the common kits, just take the tail pipe section(s) and attach one or both of them to the back of the muffler, leaving out the section of straight pipe. I want to say I used the first section of my Diamond 4" "over the hump" part on the back of my muffla' to get my side exit done

KensAuto · « **Reply #148 on:** December 25, 2015, 11:17:39 PM »

Quote from: Bigdave_185 on December 25, 2015, 01:20:49 PM

I haven't had a working egt probe in awhile but I know she runs hot and have seen the burst of 1600 on freeway pulls

Raising boys into RealMen!!

That's at the head. Once in/past the turbo, it drops significantly. By the time it leaves the tailpipe, it's probably 500 or so. I've never reached over the bed of the truck, while the wife is towing 16k up a mountain though, to test my estimate. lol

TexasRedNeck · « **Reply #149 on:** December 26, 2015, 07:29:48 AM »

The biggest problem is keeping the rear wheel clean....

On the bright side, that's when I know its time to wash the truck