Lexkost

Does any company makes a set of underdrive pulleys for a 96LS?...............Do any of you guys know?

RA40

iTrader: (6)

I've looked here and there but don't see any listed domestically.

I would be inclined to have a buddy turn some but I suspect if I want to remain with the stock belt, it will require two or more pulleys to be made. The idlers are pretty small and I don't know what RPM they turn let alone reducing them...bearing failure may be a concern. Trying to keep with a stock length belt that is.

Most underdrive kits are water pump and?

Jasoneo5

iTrader: (4)

And what does a underdrive pulley exactly do?

lspower

hell yeah im getting one 10rwhp est 175$ for the crankshaft pulley
+shipping and i think it comes w/ a belt

made by asp

https://www.aspracing.com/ezRetail/s...php?msg_id=371

good luck and have fun w/ the new power

Jasoneo5

iTrader: (4)

WAIT lspower!!! This part will work on my 1991 LS400?!! Do you know how it adds 10 horsepower? Do you know how long it will take to install, or if it is hard to install?

PLEASE INFORM! You got me all excited!

Okay I'll stop!

-Jason Elcan

lspower

yes it will work on your ls underdrive pulleys are all the same for every v8 toyota/lexus, it weights 4lbs as opossed to prob 11lbs or so, it is a good pulley if you goto www.lextreme.com and there fourm they talk about it.

i would recommend it
check it out it will answer your questions

Lexkost

I have run the asp kits on my 5.0HO and my Astro I got them from Summit Racing but those kits include water pump,alternator,and crankshift and sell for about $80 ...............So maybe we can get them there............the good thing about those kits are you will increase the life of the water pump and alternator because they will turn about 20% slower.

Lexkost

The crankshaft pulley is smaller in diameter and lightweight...............so it reduces a lot on strain on the engine...........

lspower

a little writeup on underdrive crank pulleys

Power gains are obtained in two ways. First is the weight loss. An average of 2.7 HP is gained from every pound lost off the crank shaft. 85% of UR gains are from weight loss. The rest of the gains are from underdriving, which accounts for about 15% of the total gains. All of UR underdriving is done with the crank pulley, not the accessory pulleys. This is done so maximum weight loss can be achieved at the crank where most of the horsepower gains are found.

Pagong

Now the search for more power and torque is getting near.

Lvangundy

And it ends with a shortened life engine.

pay attention to jbrady.

Jasoneo5

iTrader: (4)

seriously, I considered it but I wouldn't install this if i was GIVEN money to. Its FAR wrong worth it. 100 bucks says you won't even feel any extra power too.

Pagong

Thats why I said the "search is getting near". More and more people are finding out that there is a demand for performance parts for the V8 toyota.

And FYI i did pay attention to Jbrady when he posted on Lextreme. So please try not to lecture me, read my post and read it carefully.

lspower

just a sidenote the sold at least 20 already to people at tundrasolutions.com, cuz they had to have that many to make them so last i heard they ran out they are making more now so i guess some people go for power

Lexkost

I have them to my Astro van and do you think that in the 90k that I put on with them it shorted the engine life I don't think so. I now have 170k on it total ( and this is a GM !! )........So I guess he does't know what he's talking about!