Performance Power Pulleys?

http://store.summitracing.com/egnsearch.asp?N=400330+310431+4294908216+429490839 6&autoview=sku

Just wondering if anyone is using somthing like this..and if it makes a difference in your performance?

it will give you a small boost in power, maybe 2-5hp at MOST.

It is a worthwhile addition along as you do it right.

And doing it right would be..just the installation of it you mean?
Also..do these require use of a different sized belt?

yes.....and yes.

I just noticed that kit is only the..
Crankshaft Pulley, Water Pump Pulley, Alternator Pulley

No power steering pulley, air conditioning pulley
Is that worth $150 or can you find sets with all of them?

I just noticed that kit is only the..
Crankshaft Pulley, Water Pump Pulley, Alternator Pulley

No power steering pulley, air conditioning pulley
Is that worth $150 or can you find sets with all of them?

A set only usually has the three.

There is not such thing as power power steering and air conditionaer pulleys.

Did you look at the march ones?
http://store.summitracing.com/default.asp?target=egnsearch.asp&N=400330+310431+4294908216+4294908396&autoview=sku

http://store.summitracing.com/default.asp?target=egnsearch.asp&N=400330+310431+4294908216+4294908396&autoview=sku
sorry wrong link

Ok i do not know what the frick is up but i put the correct link down 3 times and it keeps sending me to the freakin mr gasket ones.Just type in march in the search box then 99 then 4.3.ITs PISSING ME OFF

Well okay..I read this and just assumed there was those listed as "no"
God I'm glad you guys are here to help.

Brand: Mr. Gasket Co.
Product Line: Mr. Gasket Power Pulley Kits
Pulley Style: Serpentine
Pulley Set Style: Power and amp series ratio
Pulley Material: Aluminum
Pulley Finish: Black powdercoated
Crankshaft Pulley Included: Yes
Crankshaft Pulley Grooves: 6-groove, serpentine
Crankshaft Nose Cover Included: No
Water Pump Pulley Included: Yes
Water Pump Pulley Grooves: Non-ribbed
Water Pump Nose Cone Included: No
Power Steering Pulley Included: No
Power Steering Brackets Included: No
Alternator Pulley Included: Yes
Alternator Pulley Grooves: 6-groove, serpentine
Alternator Fan Included: No
Alternator Nose Cover Included: Yes
Alternator Brackets Included: No
Air Conditioning Pulley Included: No
Air Conditioning Cover Included: No
Air Conditioning Brackets Included: No
Idler/Tensioner Included: No
Idler Cover Included: No
Idler Brackets Included: No
Hardware Included: No
Quantity: Sold as a set of 3.
Notes: Fits external alternator fans only. Fits truck applications.

MCH-4455 put that part number in since i can not get a link to work tonite

im not one to tell you not to do every thing you can to get every last pony out of your truck, but underdrives are something i do not reccomend doing... GM payed engeneers THOUSANDS of dollers to figgure this out, and then someone makes it smaller, making the part not work as effeciently at idel as what it should, you will run hotter, and imo they are not worth the money, time, and effort to change them

Thanks for the input dmbrisket 51.

yeah, sorry to be a downer, but, for some power (assuming a 4.3l) get yourselfe a high flow exhaust system and cold air intake, that will open it up to breath better, that gives a noticeable amount of power to the foot, and will help a bit with gas mileage

yeah, sorry to be a downer, but, for some power (assuming a 4.3l) get yourselfe a high flow exhaust system and cold air intake, that will open it up to breath better, that gives a noticeable amount of power to the foot, and will help a bit with gas mileage

Actually, you are not going to overheat with them on.

when your water pump isnt moving as fast as it should be, he wont overheat to where he is going to lose a headgasket (unless its a 2.2l then its going to go anywayse lol) but he will run hotter, and if its a hot summer day, with the A/C on, he will run much hotter, about midway between 210 and red

when your water pump isnt moving as fast as it should be, he wont overheat to where he is going to lose a headgasket (unless its a 2.2l then its going to go anywayse lol) but he will run hotter, and if its a hot summer day, with the A/C on, he will run much hotter, about midway between 210 and red

With a smaller pully, it will actually be turning faster.