Pully's
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Joined: Apr 2001
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From: waukesha, WI USA
Pully's
Should i get some under driven pully's, all i will need it my crank, alt, and power steering pump, maybee water pump, how much hp do they add, and what are some nice chome or polished ones
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Trent
---Car---
89 Firebird/305 L03 TBI A4/t-tops
Open Element Edelbrock Aircleaner w/ K&N air filter/Summit Chrome Valve Covers
Edelbrock TES headers 3" out/flowmaster American thunder 3" exaust/Catco cat
---Stero---
Pioneer DEH-P730 Premium
Infinity 2way 4652 4x6's/Pioneer 4way ts-a6985 6x9's
profile cl640 110x4
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Trent
---Car---
89 Firebird/305 L03 TBI A4/t-tops
Open Element Edelbrock Aircleaner w/ K&N air filter/Summit Chrome Valve Covers
Edelbrock TES headers 3" out/flowmaster American thunder 3" exaust/Catco cat
---Stero---
Pioneer DEH-P730 Premium
Infinity 2way 4652 4x6's/Pioneer 4way ts-a6985 6x9's
profile cl640 110x4
Member
Joined: Jul 1999
Posts: 317
Likes: 0
From: Raytown, MO
I just got a 3 piece set from March. They were $225 for my L69... I've heard both good and bad so I decided to get them and try it for myself... I got a big "seat of the pants" difference. I'm happy with them. I'm going to take it to the track Sun. and see how much I gain.
Supreme Member
Joined: Sep 2001
Posts: 1,266
Likes: 4
From: Tallahassee, FL. USA
Car: 92 Camaro RS
Engine: 350 Crate Motor
Transmission: Tremec TKO
Axle/Gears: 10 Bolt 3.73
If you aren't charging well enough, March makes new "Power & Amp" Pulley sets that reduce accesory rpm's, except for the alternator,which is increased.Good for people that want underdrive pulleys, but have a big stereo(like me).
2 piece black set is $92.99
3 piece polished set is $173.99 from Jeg's.
-Rich-
2 piece black set is $92.99
3 piece polished set is $173.99 from Jeg's.
-Rich-
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
I find it hard to belive you could feel a SOTP difference with them.
On Lingenfelters site, they have engine (not chassis) dyno results with the March pulley setup, IIRC, there was between 3-5HP increase toward the very topend of the curve. Figure drivetrain loss, and it'd be less at the rearwheels.
Regardless, every little bit helps when you're trying to gain just a scooch more, and they do look much better than the stock pullies.
On Lingenfelters site, they have engine (not chassis) dyno results with the March pulley setup, IIRC, there was between 3-5HP increase toward the very topend of the curve. Figure drivetrain loss, and it'd be less at the rearwheels.
Regardless, every little bit helps when you're trying to gain just a scooch more, and they do look much better than the stock pullies.
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Joined: Aug 2001
Posts: 311
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From: Saint Louis, MO, USA
Car: 91 Formula
Engine: 305 TBI
Transmission: 700R4
You can get a 2 pulley (crank and alt) Mr. Gasket set that's just as good as the March ones for under $80. I think the place I got mine was carpartsonline.com. They're not a complicated set of gear...
Don't worry about the alternator charging voltage unless you have something sucking a lot of power, like a big stereo. Yeah, your headlights dim a bit at idle (and your battery gauge will drop to the 12-13 range from 13.5+), but it shouldn't hurt unless you have a stereo.
Pulleys are cheap and super-easy to put on (remember, you'll need a new belt, tho - search the boards for the part # or measure with string when you're ready for it), but I wouldn't do them as a solitary mod expecting to see a huge gain. With pulleys, an open element, and a TBI spacer (and everything else well-maintained), I'm measuring about 15 hp more (with a G-Tech) than when I bought the car bone-stock.
Oh, yeah - the crank is the big one to underdrive (putting on a smaller crank pulley slows the whole belt system down), the others (making alt, waterpump, smaller) don't make as big a difference... wouldn't worry about spending the xtra $$ on the 3-pulley set, but that's just my opinion, it could be wrong!
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Joel Geerling
Red 91 Formula, 305 TBI
Edelbrock 14x3 open element
TBI 1/2" spacer
Hypertech street chip
Crank/Alt Pulleys
*
Exhaust is next!
[This message has been edited by Joel Geerling (edited November 16, 2001).]
Don't worry about the alternator charging voltage unless you have something sucking a lot of power, like a big stereo. Yeah, your headlights dim a bit at idle (and your battery gauge will drop to the 12-13 range from 13.5+), but it shouldn't hurt unless you have a stereo.
Pulleys are cheap and super-easy to put on (remember, you'll need a new belt, tho - search the boards for the part # or measure with string when you're ready for it), but I wouldn't do them as a solitary mod expecting to see a huge gain. With pulleys, an open element, and a TBI spacer (and everything else well-maintained), I'm measuring about 15 hp more (with a G-Tech) than when I bought the car bone-stock.
Oh, yeah - the crank is the big one to underdrive (putting on a smaller crank pulley slows the whole belt system down), the others (making alt, waterpump, smaller) don't make as big a difference... wouldn't worry about spending the xtra $$ on the 3-pulley set, but that's just my opinion, it could be wrong!
------------------
Joel Geerling
Red 91 Formula, 305 TBI
Edelbrock 14x3 open element
TBI 1/2" spacer
Hypertech street chip
Crank/Alt Pulleys
*
Exhaust is next!
[This message has been edited by Joel Geerling (edited November 16, 2001).]
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