Magnuson Supercharger, Valve Train and other supporting mods. 2007-2013, 5.3L Chevy Tahoe

[67RS427]

it is a 6 speed

It will certainly be the weak link. Not much you can do to them except a full rebuild like I did with billet planetary and billet intermediate shaft so you can use powerglide clutches. Torque converter will make a world of difference in how it feels and drives, Circle D, no question. I've rebuilt my transmission 3 times already but I can't stress this enough, tune tune tune... Tuning will make or break your transmission. Lots of guys run stock still, you just need to find someone that actually knows how to tune the 6L80. Lots of people think they know how to tune it but there are only a few that really know how to make these things last in our heavy trucks. When/if you do rebuild, use all the Sonax stuff you can (cheap insurance). There really aren't a lot of parts for these, it's all in the tune.

 

[Chrismnj]

It will certainly be the weak link. Not much you can do to them except a full rebuild like I did with billet planetary and bullet intermediate shaft so you can use powerglide clutches. Torque converter will make a world of difference in how it feels and drives, Circle D, no question. I've rebuilt my transmission 3 times already but I can't stress this enough, tune tune tune... Tuning will make or break your transmission. Lots of guys run stock still, you just need to find someone that actually knows how to tune the 6L80. Lots of people think they know how to tune it but there are only a few that really know how to make these things last in our heavy trucks. When/if you do rebuild, use all the Sonax stuff you can (cheap insurance). There really aren't a lot of parts for these, it's all in the tune.

Basically what you saying be ready for $4,500 - $5k bill coming up.

 

[mikeyss]

It will certainly be the weak link. Not much you can do to them except a full rebuild like I did with billet planetary and bullet intermediate shaft so you can use powerglide clutches. Torque converter will make a world of difference in how it feels and drives, Circle D, no question. I've rebuilt my transmission 3 times already but I can't stress this enough, tune tune tune... Tuning will make or break your transmission. Lots of guys run stock still, you just need to find someone that actually knows how to tune the 6L80. Lots of people think they know how to tune it but there are only a few that really know how to make these things last in our heavy trucks. When/if you do rebuild, use all the Sonax stuff you can (cheap insurance). There really aren't a lot of parts for these, it's all in the tune.

Can the 6 pinion front planetary gear set from the 6L90 be used in place of the 4 pinion one in the 6L80? I know the rear planetary gear set in the 6L90 is MUCH bigger than the 6L80 and cannot be interchanged. Is the front planetary even an issue in the 6 speed trans?

 

[67RS427]

Can the 6 pinion front planetary gear set from the 6L90 be used in place of the 4 pinion one in the 6L80? I know the rear planetary gear set in the 6L90 is MUCH bigger than the 6L80 and cannot be interchanged. Is the front planetary even an issue in the 6 speed trans?

Unfortunately not... You can get a modified stock one with a billet cover like mine for $1,200 or so less a core charge. Mike @ Century Transmissions is the man... It's either him or the big dollar big name companies like Circle D and alike.

 

[12BlackTahoe]

Do you think you be able to recoup the money when selling to privet party? I know trade in is out of a picture.

 

[Chrismnj]

Do you think you be able to recoup the money when selling to privet party? I know trade in is out of a picture.

Highly doubt it, who ever is ready to spend that kind of cash on a 7 year old truck most likely would do the mods themself. IMHO.

 

[12BlackTahoe]

Highly doubt it, who ever is ready to spend that kind of cash on a 7 year old truck most likely would do the mods themself. IMHO.

If you don't mind me asking what is total $$ spent so far?

 

[Chrismnj]

If you don't mind me asking what is total $$ spent so far?

Stoped counting long time ago lol, I know I did save a lot by doing it my self, but a good estimate is around 20k with suspension, engine, audio, and some other.

 

[12BlackTahoe]

Stoped counting long time ago lol, I know I did save a lot by doing it my self, but a good estimate is around 20k with suspension, engine, audio, and some other.

I am considering a SC as well, will you be doing the install yourself? Do you or any one else know what set up like this would cost to install at the shop? Defiantly wouldn't attempt to do it myself.

 

[67RS427]

Stoped counting long time ago lol, I know I did save a lot by doing it my self, but a good estimate is around 20k with suspension, engine, audio, and some other.

Sounds about right lol. I had a spreadsheet updated and stopped. Still not bad, I can't think of a new car or truck for $35k or less that can compete with mine as it sits.