Texas Speed Stage 2 L92 Cam Install on a 2013 Denali

[13UpInSmoke]

Just started my Cam upgrade getting rid of the vvt & dod on my 2013 Denali. Went through a local shop in Greenville that will do the tuning as well once I'm done. Using the Texas Speed L92 Stage 2 cam with springs, pushrods, ls7 performance lifters, new timing set, CHE trunnion upgrade, & a DSX flex fuel sensor kit to go from the virtual sensor to a real sensor & run e85. So far I've gotten down to the heads being removed & sent to a local shop to have them gone over & install the spring kit. Hope to have them back in a week then will have more updates to getting the cam swapped in, oil pump changed etc.

 

[13UpInSmoke]

Couple more pics

 

[swathdiver]

I don't remember but did you get some before runs in at the drag strip?

 

[13UpInSmoke]

I did not. We were trying to just get it up on the dyno before hand but ran out of time.

 

[West 1]

If your heads are off I would have new Seats pressed into the heads. I have repaired 2 recently where the seat drops and the pistons get hit by a valve. Nor sure why the GM seats drop or how common it actually is but I have fixed 2 myself. One on a 6.2L and one on a 6.0L. When the valve hits the piston the piston usually gets damaged so a very expensive repair. My local shop rebuilt both my 6.2L heads for $700. So not bad expense wise and they are already going to the shop. I have not seen this on the 4.8 or 5.3 engines, maybe they run with less cylinder heat or the smaller heads hold up better?

 

[Trey Hardy]

Just started my Cam upgrade getting rid of the vvt & dod on my 2013 Denali. Went through a local shop in Greenville that will do the tuning as well once I'm done. Using the Texas Speed L92 Stage 2 cam with springs, pushrods, ls7 performance lifters, new timing set, CHE trunnion upgrade, & a DSX flex fuel sensor kit to go from the virtual sensor to a real sensor & run e85. So far I've gotten down to the heads being removed & sent to a local shop to have them gone over & install the spring kit. Hope to have them back in a week then will have more updates to getting the cam swapped in, oil pump changed etc.

My buddy’s got one in his Tahoe and loves it we’re down on the coast near Morehead city
I’ll be starting my motor build in my Tahoe here soon I was either going to run the 224 cam or the chapacabra they just came out with. I wish I could run e85 you can get it around here though shoot at my local gas station by the house they ain’t even got premium!
I agree though I would do new valve stem seals and seats what time there at the machine shop

 

[mikeyss]

If your heads are off I would have new Seats pressed into the heads. I have repaired 2 recently where the seat drops and the pistons get hit by a valve. Nor sure why the GM seats drop or how common it actually is but I have fixed 2 myself. One on a 6.2L and one on a 6.0L. When the valve hits the piston the piston usually gets damaged so a very expensive repair. My local shop rebuilt both my 6.2L heads for $700. So not bad expense wise and they are already going to the shop. I have not seen this on the 4.8 or 5.3 engines, maybe they run with less cylinder heat or the smaller heads hold up better?

This is what took my L9H out, the valve seat cracked in half and fell into the piston. Nothing played nice after that and I ended up with a mangled piston in the oil pan.

 

[Geotrash]

Couple more pics

Good job, man! Working outside, too. That's hearty!

 

[Geotrash]

This is what took my L9H out, the valve seat cracked in half and fell into the piston. Nothing played nice after that and I ended up with a mangled piston in the oil pan.

I remember this but I forget what the conditions were beforehand. I've heard of it happening when someone shuts off a hot engine, like at a rest area on the interstate, without letting it cool down a while first. I'm kicking myself for not doing this when I had my heads off my L94 a few years ago.

 

[swathdiver]

If your heads are off I would have new Seats pressed into the heads. I have repaired 2 recently where the seat drops and the pistons get hit by a valve. Nor sure why the GM seats drop or how common it actually is but I have fixed 2 myself. One on a 6.2L and one on a 6.0L.

This often happens with these heads when the motor gets hot. Not so common on the cathedral heads.

 

[j91z28d1]

makes me wonder why the rec port ls3 heads don't seem to do this. those get hot lapped at tracks and shut down very quickly in the pits. I personally let mine idle a bit to cool down(except that one time lol) but I see it often, especially in the more stock cars.


does anyone know if the part numbers are the same?


lucky I have Cathedral head 6.0 lol. but maybe a good reason to run a 170-180 stat in the 6.2? even thou power wise it won't make much difference but get some cooler water back there? I have a 170 I made from a nissian 240 on my ls3 and it sits at 190-193 all the time, feels about perfect. could it be the lack of cross over pipes or whatever those little vent tubes are called at all 4 corners?

 

[mikeyss]

This often happens with these heads when the motor gets hot. Not so common on the cathedral heads.

My motor never got hot or overheated before it happened. It had 823 heads and on the day it blew up, I was at the shop to actually replace my cam and add longtube headers. The engine was turned off for about 20 mins while I was b.s.ing with the shop owner. It blew when I started the engine up to pull it inside the shop!!! Had I not even shut it off I'd never had the catastrophy in the first place. My new engine has a 4 corner steam port kit installed, I wasn't taking any chances.

 

[swathdiver]

My motor never got hot or overheated before it happened. It had 823 heads and on the day it blew up, I was at the shop to actually replace my cam and add longtube headers. The engine was turned off for about 20 mins while I was b.s.ing with the shop owner. It blew when I started the engine up to pull it inside the shop!!! Had I not even shut it off I'd never had the catastrophy in the first place. My new engine has a 4 corner steam port kit installed, I wasn't taking any chances.

I remember. Yours was the exception. I wonder if we ought to use a guide a thousandth or two thicker?

 

[13UpInSmoke]

Couple more pics from over the weekend. Also just got called the heads are done so should be able to get it back together tomorrow for first fire up. Then to the shop for final tune

 

[Geotrash]

Couple more pics from over the weekend. Also just got called the heads are done so should be able to get it back together tomorrow for first fire up. Then to the shop for final tune

What does that keyed, indexed crank sprocket do for you?

 

[13UpInSmoke]

What does that keyed, indexed crank sprocket do for you?

Would allow you to advance or restarted the timing

 

[13UpInSmoke]

Got it all buried up now of to tuner

 

[13UpInSmoke]

And the first start up!!

 

[petethepug]

Doesn’t sound like any LS I’ve ever heard before. That motor has some potential to get ya in some trouble or …. getcha away from it

 

[Charlie207]

Doesn’t sound like any LS I’ve ever heard before. That motor has some potential to get ya in some trouble or …. getcha away from it

Bump stick