Well my tranny took a crap again!

Just wondering a few things..first off some of you know I'm running a built 4l60 4wd behind my 6.0l..this is the second time it's started to slip,caught it today before it went all the way out again..but not driving it,don't want to chance it...what all would I need to do the 4l80 swap?..will my stall off my 60 work?..would I have to beef up the 80?..are the drive lines different?..just need a little input on the subject..also maybe thinking about pulling the motor,and putting a 5.3 back in it with a cam..but that's just a thought for now....thanks for the help

80e, change the input on the tcase, new crossmember, new driveshafts, new converter.

Cam the 6.0

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Originally Posted by Sierra Sleeper

Cam the 6.0

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The 6.0 is bored .30 over with 10.5:1's prc stage 2.5 heads and comp cam..thinking about instead of upgrading the tranny..put a stock 5.3 with a cam,and get the 4l60 rebuilt again..that way I won't have to buy another converter,tranny drivelines etc..and just put the 6.0l in something with a manuel tranny..kinda thinking about a fox body mustang lol..would you guys disown me?

Go 80E. Have you read the sticky on doing the swap?

The swap isn't overly difficult. Find a good used converter and don't worry about rebuilding it again. You're out less than 2500 (that's the high end) with everything.

+1 on going sith the 80e

80e all the way. And you don't have to change the driveshaft, just the yoke on it.

You should be alright with just a stock 80e what size of stall are you running.

if the trans was built recently the builder should man up and repair the trans. Doubt your making anywhere near enough to need a 80e. the cost of going 80e at this time is going to be more out of your pocket then returning the trans you already have fixed by the builder who built it...why spend money when you dont need to

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Originally Posted by BuiltZ71

Just wondering a few things..first off some of you know I'm running a built 4l60 4wd behind my 6.0l..this is the second time it's started to slip,caught it today before it went all the way out again..but not driving it,don't want to chance it...what all would I need to do the 4l80 swap?..will my stall off my 60 work?..would I have to beef up the 80?..are the drive lines different?..just need a little input on the subject..also maybe thinking about pulling the motor,and putting a 5.3 back in it with a cam..but that's just a thought for now....thanks for the help

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Originally Posted by Botlfed

You should be alright with just a stock 80e what size of stall are you running.

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Its a 3200 stall...but I thought I'd have to buy a new one for the 80e?

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Originally Posted by Quik

if the trans was built recently the builder should man up and repair the trans. Doubt your making anywhere near enough to need a 80e. the cost of going 80e at this time is going to be more out of your pocket then returning the trans you already have fixed by the builder who built it...why spend money when you dont need to

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That's what I'm hoping he'll do..especially since this is the second time it went out...but if I put a stock 5.3l back in it with just a cam..I dont think I'll have to worry about it going out again..I think the 6.0l is killing it,because I'm running 35" tall tires..that's a lot of mass to be turning IMO.

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Originally Posted by Quik

if the trans was built recently the builder should man up and repair the trans. Doubt your making anywhere near enough to need a 80e. the cost of going 80e at this time is going to be more out of your pocket then returning the trans you already have fixed by the builder who built it...why spend money when you dont need to

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That's the problem George. Around here, there aren't just a TON of reputable builders that stand behind their work. It's better for us, for anyone over 400hp or so, to just go 80e.

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Originally Posted by BuiltZ71

That's what I'm hoping he'll do..especially since this is the second time it went out...but if I put a stock 5.3l back in it with just a cam..I dont think I'll have to worry about it going out again..I think the 6.0l is killing it,because I'm running 35" tall tires..that's a lot of mass to be turning IMO.

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I think you have that backwards. The 35s are killing it, not the 6.0l.

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Originally Posted by pl4yboy

I think you have that backwards. The 35s are killing it, not the 6.0l.

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Yea your prob right lol...check this out though!..I had a bunch of cardboard boxes building up I'm my garage..so I said hell if it goes all the way out then fine..so load up all the boxes to run up to my works dumpsters...babied it the way up there,but on the way back..I gave it some gas,went thru all gears didn't slip one time all the way home!..so idk what to do..just drive it till it pops,or park it till I get the mustang?!lol

You will need a stall for the 80e, but you can sell the 60e and stall amd make some money back, also pulling the motor out to replace it with a less powerful one is borderline insane, fix the problem, the trans. Id save up some money and get an 80e, id say keep driving it til it pops, cus if youre just gonna park it, whats the difference, either way the truck is down.

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Originally Posted by Botlfed

You will need a stall for the 80e, but you can sell the 60e and stall amd make some money back, also pulling the motor out to replace it with a less powerful one is borderline insane, fix the problem, the trans. Id save up some money and get an 80e, id say keep driving it til it pops, cus if youre just gonna park it, whats the difference, either way the truck is down.

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Yea that's true..I was just thinking I could get a stock 5.3l around $800..that it might be cheaper going that route..cause the 6.0l in a fix body would be pretty sick,with a 6 speed behind it..but I'm just gonna drive the truck for now taking it easy..we'll see what happens,I've got tax money coming back..and would like another vehicle

How do you drive?

Make sure you NEVER do any WOT downshifts. Keep an eye on trans temp. With a good cooler, it should stay below 180* at all times. When you do want to have some fun, make sure you move the shifter into Drive instead of Overdrive and still AVOID WOT downshifts.

Yeah I'd definitely do the 80e swap! You don't know how many trans repairs I do under warranty on 4L60/65/70 transmissions on STOCK trucks, some even with a 4.3 in front of them!

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Originally Posted by Beatdown Z

How do you drive?

Make sure you NEVER do any WOT downshifts. Keep an eye on trans temp. With a good cooler, it should stay below 180* at all times. When you do want to have some fun, make sure you move the shifter into Drive instead of Overdrive and still AVOID WOT downshifts.

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Yea I do alot of WOT down shifts!..that's probably what kills it..it has e-fans and a pretty big trans cooler,the temp stays pretty low..unless it's stop and go,but never gets to hot..it's a 99 so it just has drive,should I drop it down to 3rd?..also how can I stay away from WOT down shifts when already at a roll?..oh btw trans lost 3rd drive and od!..trailered back to the shop wendsday..hopefully there fixing for free again lol

Sounds like a good ol 3/4 clutch failure...

Yes, drop it into 3rd. As far as avoiding downshifts, learn what speeds the truck shifts into 2nd and 3rd at. Then when you want to hammer down, drop it into the right gear for the speed you're going, put the pedal through the floor aka WOT, then put the shifter into 3rd so the computer can do the shifting.