2007 Tahoe LTZ 5.3 4x4 Whipple or Magnuson

[okfoz]

I am considering installing either a Whipple or Magnuson SC on my 2007 Tahoe, does anyone have opinions which is better and why?

I have 313,000 miles on it, and it runs like a top, even with a leaking rear main seal I only use 2 quarts every 4000 or so miles, trans shifts good, no lights, just want it to be a little more peppy.

Thanks

John

 

[Big Mama]

@Joseph Garcia would be a great resource for you.

 

[Charlie207]

If all you want is a little more pep then a cam, long-tube headers, and a tune would be perfect. It would also be substantially less expensive than a supercharger install.

 

[Joseph Garcia]

I worked with a racing machine/car builder on my supercharger project, and they were very high on Whipple, based on their experiences. As such, since they were going to perform the work, I thought it best to go with their preferred vendor.

And yes, as @Charlie207 stated, it provides a lot more than a little more pep.

At 310,000 miles, I'd suggest some top end rebuilding to your motor, prior to supercharging. I cleaned up the heads, replaced the cam, lifters, pushrods, timing chain and gears, the oil pump, water pump, motor mounts, frame mounts, radiator, etc., with only 150,000 miles on my motor. Also, I replaced my transmission and torque converter with a new GM one, as I did not think that my 150,000 miles on my existing transmission would hold up under the supercharger.

 

[Foggy]

At that mileage I would NOT supercharge/force induction your engine.
No matter how well it runs/performs now
That's a lot of stress on your pistons/rings/ringlands
and your connecting rods & bearings.
For that kinda money you can do lots of other stuff and be happier.
Plus you'll need to upgrade your transmission as well.
I did the edelbrock s/c on mine with only 90K.. I liked it, but gas mileage
wasn't good.... I upgraded my entire cooling system and transmission beforehand

 

[j91z28d1]

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.

 

[Noggles]

At that mileage I would NOT supercharge/force induction your engine.
No matter how well it runs/performs now
That's a lot of stress on your pistons/rings/ringlands
and your connecting rods & bearings.
For that kinda money you can do lots of other stuff and be happier.
Plus you'll need to upgrade your transmission as well.
I did the edelbrock s/c on mine with only 90K.. I liked it, but gas mileage
wasn't good.... I upgraded my entire cooling system and transmission beforehand

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.

 

[strutaeng]

300,000+ miles is perfect for force induction: your piston rings already have the perfect gap for boost.

Well, that's what Internet says, anyways.