what pully should i get for my 01 lightning?it has a chip and cool air and boost bypass whos got the best one and the easist one to change.peferably a quick change one.

 

that all depends on how much more power you want man.

2lbs, ahh why waste your time

4lbs, hey thats pretty nice

6lbs, now where kicking

8lbs+, not really to good for the daily driving truck but you can do it.



as far as doing a pulley, I've see a few JDM pulleys break here and there and there not that easy to change. PSP or JL pulleys are easy to do and they are nicer in my opinion.

 

I like the descriptions Joe

--Joe

 

im debating on getting either a 2#,3# if i can find one, or a 4#er. do a 2,3,4# pulleys really wear on your charger more? if so how much?

input anyone?

 

i agree w/joe from what i've read around here........i am expecting my chip, filter, 4lb pulley...can you'll give me some advice such as installation, taking it easy for a while after i've installed them?, and how easy it is to install them(should i get some of my mechanic friends to help me) By the way I have ordered the above from PSP.

Thanks a lot
You All Take Care

 

Both the Top and Lower Pulley's are easy installs. Any do-it-your-selfer with General Automotive skills can do it easy, in probaly under 1 hour for either install.

The top can be done without leaving permanant signs of moding in case it ever has to go back stock. All your doing is removing "one" bolt (you can always buy a new Bolt) The lower will have you removing the tranny inspection plate, a torque convertor bolt, 3 or 4 front motor bolts, and of course the removal of the factory cage assy. It's still very easy, don't let it scare you.

Here's where the War Starts. A Top Pulley WILL GIVE YOU MUCH FASTER BOOST than "any size" Lower Pulley. NOT MORE BOOST, I said FASTER BOOST. It allows the Supercharger to spool up quicker, due to less rotational mass. ""IT'S A FACT" Now with that in mind I decided to do both the Upper and Lower Pulley. This way I have immediate Boost, even a slight touch of the Pedal will give me over 10 lb's, and with the 4LB Lower it just keeps climbing at WOT. 2+4 WILL NOT give you more than a 6lb lower, it will just allow more boost at lower RPM and Throttle Position.
It's much cheaper to just go with a 6lb lower.

Plenty of pictures of Both in My Gallery, with step by step pictures

 

I thought the uppers were press on press off ?

Doug

 

I wouldn't call the uppers EASY, like doug said, they have to be pressed on and off, not quite as simple as "just one bolt". and I don't know about all of this faster boost because of rotating mass nonsense. as for "IT"S A FACT", please show any data you have to support this. it may be "faster" meaning sooner in the rpm range because the blower is spinning faster at any given rpm than it was before the pulley, but this is no different than with a lower pulley.

My personal opinion is that I wasn't impressed at all with the upper pulley on my truck, but maybe it wasn't optimal because I didn't send that chip off to recalibrate so maybe my air fuel wasnt just right?

BTW, I'd get a #6, or a #4 (if you're scared)

 

The smaller the upper pulley, the less surface area for the belt to grip. Add that to the higher speeds you are spinning the blower up to, and you can have some nice slippage issues... which would negate any boost gains you'd expect.

Please explain the "faster boost" concept... it makes no sense. Whether you have a larger lower or a smaller upper, the speed of the blower is still directly in proportion to that of the engine, depending on the ratio of lower to upper. So a 2 pound upper pulley will spin the blower at the same speed in relation to the engine as a 2 pound lower. There is no way it can get up to speed "faster" unless it somehow is accelerating itself faster than the engine...

If you claim its less rotational mass allowing faster overall acceleration... heh, I don't think a few grams are going to make a difference, and surely not one you can feel.

 

[QUOTE] A Top Pulley WILL GIVE YOU MUCH FASTER BOOST than "any size" Lower Pulley. NOT MORE BOOST, I said FASTER BOOST. It allows the Supercharger to spool up quicker, due to less rotational mass. ""IT'S A FACT" /QUOTE]

Sorry Pardtner, you have the physics right, but you're not considering the mass change for a lower pulley. Yes, a smaller (lighter) top pulley will accelerate faster than a stock one, but consider the mass of the lower stock caged pulley, then heft the aftermarket NON caged lower. MUCH LIGHTER, believe me, changing the lower will have more effect on the rotational inertia than the upper.

 

I have a question. Does the lower pulley spin your accessories faster or would it have the same effect as an upper pulley?

 

The lower(and upper) pulley only changes the s/c rpms. The accessories have a seperate belt and are not affected.

Dan

 

I've been running a Upper for 6000 miles and have never had it slip. I actually took it off last week because of my 3 Plug melt down to assure me a richer tune for these colder months, but it's going back on in the spring. As for the install, yes you pull it off, then press a Hub on. Then 4 allan bolts can change back and forth in less than three minutes. To go back to stock, you pull the hub off and press the original back on.
Pulling it off

Pressing it on

Hub is now on

 

This is a 2.80 Upper installed


As for how and why it's FASTER BOOST UP, I'll let the MFG explain.

I'll explain Rob; it's Less Rotational Masses. It gives you not only instant boost, "but spooling the supercharger up allot quicker", over any lower crank pulley installed. I have preached this for years. You just recognized it as well when you took it off.
Rob, why do you think I suggest Upper Pulleys on a Lightning, along with the Lower Pulley in all my Recommended Performance Packages my customers buy from me? "Nothing will ever spool up quicker than an Upper Pulley on any Supercharger". This is why on other vehicles, I offer different sized Upper Pulleys, dependant upon their wants and needs of performance. Hope this helps.

Regards, Terry
Owner: South Florida Pulley HQ
www.southfloridapulleyhq.com


I only found this out after I took it off last week and wondered why with a 4 lb lower I dont get guage pinning boost at 1/8 pedal like I do with the 2 LB Upper. Now I know why.

 

This is not a turbo that spools up to speed. The rotation of the blower is directly related to the rotation of the crank. So a true 6 pound lower pulley would supply just as much boost at all RPM ranges as a 4 pound lower/2 pound upper combo. To say that it would "boost quicker" is a rather dubious urban myth, with no basis in actual reality. The blower itself is still turning at the same speed in relation to the crank regardless.

This is assuming that the # rating is a valid and real sizing of the pulleys. If you measured all of the pulleys, and compared the ratio of the 6# lower to stock upper and the 4# lower to 2# upper, and the ratio was the same, then the boost curve would also be identical at ALL RPMs.