2007 Tahoe LTZ 5.3 4x4 Whipple or Magnuson

[Foggy]

Not that I totally disagree with rebuilding, but the sloppy mechanics guys love high mileage ls stuff because the rings are well seated and the ring gaps have opened up enough to make it safer with boost.

Also, what was your gas mileage like before and after the supercharger out of curiosity.

Before it was 17-18 mph hwy. 10-13 city. 10mph towing
After 14-15 hwy. 10-12 city . 4.5-5.5 mph towing.. yeah that bad

Took off the sc. Did a dod delete vvt cam and some cyl head massaging.
About 17 ish hwy now. 10-13 city. 9-10 towing. And a lot less heat

 

[Big Mama]

How’d the two compare price and performance wise? I’m sure the sc made more power but how about daily driving?

 

[okfoz]

2 qt ever 4k miles?

I think maybe find the source of that before modifing it. that's a lot of oil burning in the cyl, which also kills the octane of the fuel.

most likely you need a new updated drivers side valve cover and a good catch can.

I know the source, it is my leaking oil pan and rear main seal, at least that is what the oil soaked piece of cardboard suggest to me on my garage floor, and the fact that it likes to mark its territory everywhere we go like a male dog. If I let it idle for 5 min I will leave an oil spot the size of the palm of my hand on the ground. I was quoted $1500 to do the work, so I did the math, based on 2qt for 4000 miles, on the current cost of oil and basically I can buy 5 quarts of Mobil 1 (all I use) for $30 at WalMart, Which means I spend $30 for 10,000 miles. Therefore, at current rate of leakage, it should go 500,000 miles on the same cost of oil or getting it fixed, and PLUS I get free undercoating.

 

[Foggy]

How’d the two compare price and performance wise? I’m sure the sc made more power but how about daily driving?

SC was great for daily as I still had stock camshaft with DOD turned off...
It does produce more heat - and the intercooler blocks air coming into the
radiator/condensor. I upgraded my radiator to the big alum and did headers at
the same time. It certainly hauled ass and low rpm power was awesome.
So it drive just like stock.
I chose the smallest vvt cam. So with my headers already and then did
some porting of the heads with springs etc and upgraded the rockers...
It drives pretty stockish. Lost just a little low end over stock cam...
The exhaust note is sooooo much different. you'd think I put in a stage 3 cam!

and to mention.. the SC adds about 100-150 lbs to the front end..

 

[Joseph Garcia]

I used to get 10-12 mpg in the city and 14-16 mpg on the highway. With the SC, I get 9-10 mpg in the city, and I have not had it on the highway enough miles to determine that change in mpg.

The increase in low end torque is very significant, and the additional punch between 3k and 6k rpms is amazing.