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

[Chrismnj]

Another option is to put supercharger by it self and see what that does as far as power

 

[swathdiver]

Shopping list, what else should I consider?

View attachment 213061

Get a price on the magnaflow y-pipe from @GotExhaust.com

Made me a great deal and a lot less than that.

I'm of mind to do one change at a time and measure for performance. Too much at once can make troubleshooting near impossible.

 

[Chrismnj]

Get a price on the magnaflow y-pipe from @GotExhaust.com

Made me a great deal and a lot less than that.

I'm of mind to do one change at a time and measure for performance. Too much at once can make troubleshooting near impossible.

I always thought that full exhaust is a must either you go with turbo or supercharger, to avoid back pressure

 

[swathdiver]

I always thought that full exhaust is a must either you go with turbo or supercharger, to avoid back pressure

Well, you're right. But our stock exhaust can easily handle an additional 50 or more horsepower. I have yet to see (and I don't know everything) a dyno or 1/4 mile test showing an increase in power over a stock exhaust with just an exhaust system mod. They always throw parts at them like the camshaft dyno tests.

We always made one change to our cars and then raced them at the track. Then made another and raced them again. This allowed us to quickly identify the stuff that was all hype and didn't work or just not needed as the factory parts were good enough for our purposes.

Now this is just my opinion, I think the only benefit you'll get from those shorty headers is more cabin noise and future exhaust leaks. Regardless, it would be best to add the supercharger and then test the truck. Now, you can download apps to your phone and have a portable drag strip if you can find a deserted road if a track is not close by. They are never convenient, but chasing power robbing culprits is worse.

I once drove up to Gainesville's drag strip to run some of our cars. There was this one Buick that looked like it would blow our doors off with all the stuff he had on it but after it's third pass, it as no faster than a showroom original. Seeing how mine was completely stock (appearing) and two seconds faster than his, he sought my counsel and we proceeded to pull parts off the car and it kept going faster and faster. By the end of the night I had him banging on the door of the 11s. One of the biggest performance gains was to un upgrade his fuel system. We bypassed the massive fuel lines and external Walboro fuel pump and adjustable FPR and wired up the stock fuel pump and lines and a got a spare stock FPR back on his car with a little tweaking and we were in business. Curiously, when I had the race shop, the biggest gains my customers saw was removing all the junk that they had been sold and just tweaking the factory parts.

 

[Chrismnj]

Well, you're right. But our stock exhaust can easily handle an additional 50 or more horsepower. I have yet to see (and I don't know everything) a dyno or 1/4 mile test showing an increase in power over a stock exhaust with just an exhaust system mod. They always throw parts at them like the camshaft dyno tests.

We always made one change to our cars and then raced them at the track. Then made another and raced them again. This allowed us to quickly identify the stuff that was all hype and didn't work or just not needed as the factory parts were good enough for our purposes.

Now this is just my opinion, I think the only benefit you'll get from those shorty headers is more cabin noise and future exhaust leaks. Regardless, it would be best to add the supercharger and then test the truck. Now, you can download apps to your phone and have a portable drag strip if you can find a deserted road if a track is not close by. They are never convenient, but chasing power robbing culprits is worse.

I once drove up to Gainesville's drag strip to run some of our cars. There was this one Buick that looked like it would blow our doors off with all the stuff he had on it but after it's third pass, it as no faster than a showroom original. Seeing how mine was completely stock (appearing) and two seconds faster than his, he sought my counsel and we proceeded to pull parts off the car and it kept going faster and faster. By the end of the night I had him banging on the door of the 11s. One of the biggest performance gains was to un upgrade his fuel system. We bypassed the massive fuel lines and external Walboro fuel pump and adjustable FPR and wired up the stock fuel pump and lines and a got a spare stock FPR back on his car with a little tweaking and we were in business. Curiously, when I had the race shop, the biggest gains my customers saw was removing all the junk that they had been sold and just tweaking the factory parts.

James, totally get your point. I got carried away with my list reading other build threads, keeping it simple will avoid problems down the road, plus as I said before not building a race truck but reliable off road truck. Really don't want to get in to transmission build or the rear. Do you know any members on here with superchargers?

 

[swathdiver]

James, totally get your point. I got carried away with my list reading other build threads, keeping it simple will avoid problems down the road, plus as I said before not building a race truck but reliable off road truck. Really don't want to get in to transmission build or the rear. Do you know any members on here with superchargers?

Yeah, I paged a few of them but I guess they are busy and not on the computer.

 

[Tonyrodz]

James, totally get your point. I got carried away with my list reading other build threads, keeping it simple will avoid problems down the road, plus as I said before not building a race truck but reliable off road truck. Really don't want to get in to transmission build or the rear. Do you know any members on here with superchargers?

@sumo , @Rocket Man @01FormulaTA . Only guys I can remember.

 

[Pilot]

Subscribed. Please keep the updates coming! My truck is still in the paint shop but when I get it back I’m going to start planning the performance mods. I kinda like the idea of an LS3 crate motor + supercharger.

 

[Pilot]

(But will likely follow the advice in this thread and scale back—split into stages)

 

[swathdiver]

Subscribed. Please keep the updates coming! My truck is still in the paint shop but when I get it back I’m going to start planning the performance mods. I kinda like the idea of an LS3 crate motor + supercharger.

Don't use that cam though, use one made for our big vehicles, an L9Hs at least.