2003 Denali LQ4 with a halfway decent build sheet.... i figured i would list specs 1st to help cut down on those questions! so sorry for the long read

-.030" over bore with Wiseco forged pistons,piston dome volume -3cc, ring gaps top.018" 2nd.020"
-stock length 6.125" eagle forged I beam rods, stroke=3.622"
-melling hv oil pump
-cloyes billet timing chain 3bolt
-clevite main&rod bearings
-durabond cam bearings
-arp 2000 rod bolts
-arp main and head studs
-fel-pro mls .041" head gaskets #1161L041
-0.000" deck height, street/strip valve job, port/polished 243 heads
-comp beehive 372 lbs/in valve springs# 26918-16
-comp cam-xfi rpm cam duration@.050 intk216 exh220..cam degreed to 112
-comp lifters
-comp hitec push rods7.4"length
-comp ultra gold arc series 1.72 ratio rockers
-fast lsxrt 102mm intake manifold
-fast fuel rails
-aeromotive fuel pressure regulator # 13301
-90mm dbw TB
-bbk shorty headers
-magnaflow high flow cats& cat back
-preformabuilt level2/crawler transmission with a 2500stall tq con
-stock transfer case (prob time to get another as a back-up & to rebuild and do the chain fix)
-stock injectors for now(ive been needing to do something better but not sure which injectors yet)
-stock crankshaft polished & balanced
-CR 10.89:1
-EF Live
-22"x12" SS Reps wrapped with 305/40 22 toyo proxes st2's(HEAVY)
-3rd row seats(MORE WEIGHT!)
-2 12" jl subs,ported box behind 3rd row(EVEN MORE WEIGHT)
-spare tire(WEIGHT but can come in useful for a DD)
SHE'S A BIG & HEAVY DAILY DRIVEN GIRL THAT LOVES TO REV AND IS TOP END HAPPY!!!
future:
-injectors(haven't made a decision)
-fuel pump(haven't made a decision)
-bout to ditch the shorties and go Speed Engineering 1 7/8" long tubes and redo the entire exhaust.
-standalone fuel sytem for some low dose pills!!! then bigger pills till it blows up n pull it back out to build for boost! or 427 lsx crate engine for boost

I'm at the point where i am in need of a 4l80 swap(sound correct?) but just havent found a local shop (crofton, md) familiar with this swap on awd denali...they all say they have never done 1 yet and id be the 1st and they dont know what all is involved to get it done. (i dont want to be the guinea pig)

I spoke to Alan @Performabuilt in regards to building a 80E for my truck and he had no clue what i was talking about when i started to explain what needed to be done for the swap and what i need for the xcase to mate and he followed up with........

Tony,

According to our records you bought a 4L60E Level 2 mixed with a Rocks Crawler and 2500 stall TC. They are rated for up to about 500 hp, so you are definitely getting the most out of it.....lol. I'm glad you've enjoyed it as much and as long as you have.

Given that you want to add even more power, I would suggest upgrading to our Level 3 (or even the Black Edition, since your vehicle is so heavy).

You also need to upgrade your torque converter to a billet at your power level.

The Restore/Upgrade will run you:

Restore........................$995

Upgrade to Level........$1095

Total............................$2090

If you want a Billet converter, the 9.5 inch runs $1085. We don't build our own converters any more. We sell FTI converters.

The Restore does not include shipping to us, but it does include shipping back to you. If you don't have access to cheap shipping we can pick it up for an additional $175 on our account.

If you are interested, the Black Edition runs $1805 more than the Level 3.

Alan


not sure if i should give the Black Edition a try or put all that$ into the 80E swap????
any1 else running a performabuilt trans?
i beat the snot out of my truck daily! and the trans has finally gotten tired and worn out from all the abuse and is starting to slip on WOT 2-3 shift. i know its only a matter of time till i start slipping all the time and losing gears

any/all comments & suggestions are welcome!
thanks every1,
tony

 

I'd go 80e... its not all that bad.

You will need a different input shaft for the transfer case, otherwise it is very similar to any 4L80e swap in a 4x4 truck. Driveshafts, crossmember, flex plate, converter, cooler lines, and tune.

There is a great write up on here.

 

The 80 swap would probably be waaaay less expensive than the 900+1000+ 1800.... Hell you could buy a gm reman 80, put a shift kit in it a converter and pay someone to install it all for that!!!

 

are we talking a stock 80 or built 80 for the cheaper$

 

A built 80E is cheaper then a built 60e anyday, a fully build 60E is big money as you have to do everything to keep them together behind a lot of power and weight. At the end of the day they are still limited by smaller shafts also.

Is this a Yukon or Sierra Denali?

 

yukon denali!

also i have been told that my fuel pressure should be 65psi at idle vac line off??? does this sound correct? i have had set 42-45 psi @idle vac line off
just trying to get the guys that have the knowledge to explain where my fuel pressure be,
thanks

 

42-45 with no regulator is very low.... Should be 58-65!!