LT1Factor

I was just curious how well the LT1 responds to a new crankshaft pulley??

dhdenney

iTrader: (53)

I used to have one. I couldn't tell any difference. Track times comparison might have told a different story or a dyno run.

z28boysteve

iTrader: (9)

at the track, yank off the belt for just one pass, the beauty of the lt1 is its water pump is shaft driven, so it wont overheat. Picks you up like .2-.4 the faster you are the less it helps.

00Z-28-LT1

iTrader: (1)

i had one and i didnt notice anything

Wicked_Hugger99

iTrader: (1)

so is it not worth getting? cuz i was looking at getting an ASP or March crank pulley for my 95z

BLACKDEATH

i got the march set alternator and crank pulley only because i have not changed the belt since i have bought the car and i was upgrading and getting a new belt and decided why not get some new pulleys, not very noticable but every little bit makes somekind of difference!!!!!!!!

Wicked_Hugger99

iTrader: (1)

Good point! Guess ill get one.

METALBEAST

iTrader: (1)

I remember seening a website started by a guy with a 96 WS6. He started with the car brand new and bone stock. He dynoed his car stock and began modifing documenting each and every mod with dyno sheets. With the crank pulley, I remember he gained approximately 3.5 RWHP. I will try to find that site and post it if I can.

dirtybird96

The site is ws6.com. I have a friend who gained .1 and 1 mph with underdrive crank and alternator pullies. The gain was nice but it killed his battery and he had to get a jump from a stang in the staging lanes.

SAPPER

iTrader: (10)

I run one on my wifes Impala SS. We do not need the Alt pulley like F-bodies. But we did notice that the revs climbed a little quicker and it did take about a consistant tenth off in the 1/8th

Nova5

i belive the solution to the batt problem was to get a overdrive pully for the alty.

atljar

iTrader: (2)

A bolt on underdrive isnt worth much, but a replacement pulley is, like the ASP ones. They are about 150 bucks though, but much less rotating weight, as well as the underdrive. I never had the alternator pulley on mine and never had charging issues.

qwk93ta

iTrader: (13)

I have an ASP, agree with someone that said it was worth a .1!

ss96kitten

I had one on my car when I bought it, but it needed a new belt and the numbers were worn off, and I couldn't match the belt up with any sizes at the local shops. Took the underive pulley off so I could put a stock belt on, and didn't notice a difference in power at all.

z28boysteve

iTrader: (9)

I dont get it, why not just take the belt off, It makes a HUGE diff. you can deffinitely feel going down the strip, and you slice .2-.4 (depending on how fast you already are),..... plus its FREE!

97LT1

iTrader: (3)

True that works but some guys dont want to get dirty at the track. I will try pulling my belt off next time i go. I dont know how much it will help me being i have a pully kit already. Pulley are on 24-7 and i felt it when i first modded my car. I think it is a good starting point with the intake exaust filter etc.

z28boysteve

iTrader: (9)

Holy **** you're in laporte! your like 10 mins away from HRP!

Im in the army stationed in fort sill which sucks, but I live in seabrook...
I would come down for Xmas time, but I totalled my 2000... still gotta get another f body

atljar

iTrader: (2)

Yes pulling the belt gave me an additional .05 over the ASP pulley. 60s were 1.687 and 1.689

Heres the problems...
you cant do it on the street
You are running an EFI car straight from the battery, get maybe 1 or 2 runs before you need to charge it again
No power steering sucks

z28boysteve

iTrader: (9)

well, like I said the faster you go the less it seems to help... When I was stock it took .1 off my 60' alone!!! now it only takes .02 off my 60'

METALBEAST

iTrader: (1)

I found the site with a before and after dyno graph for a 96 WS6.

http://www.ws6.com/mod-2.htm