LT1s and Underdrive...
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.
Staging Lane
Joined: Jul 2004
Posts: 69
Likes: 0
From: Sacramento, California
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!!!!!!!!
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Originally Posted by Wicked_Hugger99
Good point! Guess ill get one.
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Staging Lane
Joined: May 2004
Posts: 72
Likes: 0
From: Ft Wayne, IN
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.
Joined: May 2004
Posts: 1,593
Likes: 267
From: Halfway back on the Highway to Hell...again!
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
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.
Staging Lane
Joined: Dec 2004
Posts: 54
Likes: 0
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.
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!
Originally Posted by z28boysteve
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!
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
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
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
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