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

[Chrismnj]

@12BlackTahoe, I did get a comment from BB on my cam "that is quite a large cam for that blower, but the 120 LSA will help quite a bit." So you might wanna contact them them before you buy. Hope this helps.

 

[67RS427]

@12BlackTahoe, I did get a comment from BB on my cam "that is quite a large cam for that blower, but the 120 LSA will help quite a bit." so you might contact them before you buy. Hope this helps.

Not sure I agree with black bear on that one... I'm running a much bigger cam on a similar blower setup. LSA blower is a TVS1900 and although mine is fully ported, the cam being "big" is not an issue. They need to learn how to tune the idle if they think it's too big for some reason. The custom ground LSA is what makes the BTR cams unique and is why they make so much more power than other cams. It's ground specifically for a PSD Blower to build up as much cylinder pressure/boost as possible.

 

[Chrismnj]

^^ Like I said black magic to me I can rely on expertise of BlackBear, after installing the tune I need to collect data and send it back for more tuning.

 

[Chrismnj]

Here is another curveball, most likely I be pulling out the engine, would it make sense to replace torque converter? if so what's recommended?

 

[67RS427]

Here is another curveball, most likely I be pulling out the engine, would it make sense to replace torque converter? if so what's recommended?

Circle D Triple Disc.... Don't bother with anything else

 

[Tonyrodz]

Circle D Triple Disc.... Don't bother with anything else

Agreed. I also went with a Circle D. Wish I would've known about the triple disc.

 

[97audia4]

Here is another curveball, most likely I be pulling out the engine, would it make sense to replace torque converter? if so what's recommended?

Why are you pulling the engine?

 

[Tonyrodz]

Why are you pulling the engine?

Probably just easier to do all the work he wants to do to it.

 

[Chrismnj]

It will be much easier to work on, plus might as well inspect cylinders etc.

 

[Rocket Man]

Here is another curveball, most likely I be pulling out the engine, would it make sense to replace torque converter? if so what's recommended?

FTI is a good choice as well as others. Triple disc billet that allows full lock-up under full throttle. Don’t cheap out on it or it won’t last.

 

[Chrismnj]

is that the one you guys are talking about 265mm triple disk lock up?

 

[67RS427]

is that the one you guys are talking about 265mm triple disk lock up?

View attachment 216860

Yup... I ordered mine from Gwatney and got 5 or 10% off. They are a dealer. That's the same one I got and they did the dual bolt pattern. It's a super nice converter

 

[Chrismnj]

Yup... I ordered mine from Gwatney and got 5 or 10% off. They are a dealer. That's the same one I got and they did the dual bolt pattern. It's a super nice converter

Got to hit the

button again.

 

[Chrismnj]

how do I know that is a 265mm not 258mm or other? sorry if it a dumb question

 

[67RS427]

how do I know that is a 265mm not 258mm or other? sorry if it a dumb question

Not a stupid question.... Get ahold of Chris or Glenn @ Circle D and see what they suggest. I got the 265mm Pro Series Triple Disc. 2,800 stall in the 1A Stator combo (for a tight stall in a heavy truck). I got mine from GWATNEY Performance for $1175 shipped direct from Circle D. They do one free stall change or repair if you blow it as many of the high end companies do. I considered others, always came back to Circle D. Nothing but great things and service from them.

 

[Tonyrodz]

Not a stupid question.... Get ahold of Chris or Glenn @ Circle D and see what they suggest. I got the 265mm Pro Series Triple Disc. 2,800 stall in the 1A Stator combo (for a tight stall in a heavy truck). I got mine from GWATNEY Performance for $1175 shipped direct from Circle D. They do one free stall change or repair if you blow it as many of the high end companies do. I considered others, always came back to Circle D. Nothing but great things and service from them.

I didn't know about the 1 free stall change or the free repair. Do they also only do that once? I bought mine through the garage that did my mods.

 

[Chrismnj]

now why would I need to replace the stall?

 

[67RS427]

I didn't know about the 1 free stall change or the free repair. Do they also only do that once? I bought mine through the garage that did my mods.

They do one for free if you break it or simply want it tighter or looser

now why would I need to replace the stall?

Just in case you break it or decide you want a looser (higher) or tighter (lower) stall. You want it as tight as possible with these blowers since they make so much torque down low.

 

[bottomline2000]

You want to spec your stall to the cam. The idea is for the stall to be 500 rpm above where the cam starts making power. I had a 26-2800 circle d and liked how tight it was, but at times it felt too tight. I went to a Precision Industries 3k billet triple disc (5yr warranty, free restall within 1st 2 years). It gets into the power quicker and is slightly looser, but I like it.

Also you want to spec a PD blower cam with less overlap. U don't need a big cam for forced induction application. My Vinci trucker cam is real close to the BTR stage 3 truck cam specs but i have a 6.0 and it's a blower cam. What works in a forged 402 may be a big cam in a 5.3. It will be weak down low and you will need to compensate with more stall. No amount of tuning will help that.

Sent from my SAMSUNG-SM-T377A using Tapatalk

 

[thompsoj22]

It will be much easier to work on, plus might as well inspect cylinders etc.

This is an amazing thread! I get a queasy feeling just thinking about the cc statements, im sure you know the fed ex/ups by first name at this point? Come on man, put the key in the ignition? We are all getting anxious out here!