C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Anyone Try Out A March Pulley Sys?

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Old May 23, 2007 | 11:55 AM
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Default Anyone Try Out A March Pulley Sys?

ANYONE HAVE A MARCH PULLEY SYS? OR SIMULAR MANUFACTURER
THAT THEY CAN SHARE THIER PRO'S AND CON'S WITH?
THANX.
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Old May 23, 2007 | 01:47 PM
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I put an ASP steel underdrive crank pulley on my '86, no complaints here!
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Old May 23, 2007 | 02:38 PM
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They "advertise up to 20 horsepower". In reality its about ten. Makes your cars accessories **A/C, alternator ect** run slower so it uses less power. I like the Mach "polished" ones from midamerica. I wouldnt use it and expect a big gain from them but it would dress up my engine bay a little.
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Old May 23, 2007 | 03:19 PM
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I used the March system 8 yrs ago when i had all bolt ons. After 3 yrs the rubber damper seperated from the crank pulley. The gains were there at the track (stock 93, headers no cats, 4.09s, pullies 1.6 rr = 12.8 @ 111). Eventually I replaced them with the ASP under drive which lok liek a super quality piece in comparison.

Only downside to the march is the alternator pulley is small too so at idle the interior lights will dim as will the headlights etc.
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Old May 23, 2007 | 03:28 PM
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March makes a power and amp series now to deal with that.
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Old May 23, 2007 | 03:49 PM
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got ya, i saw the ad of the whole system, looks schweeeet!
but i just checked out the setup for my 84 and it looks different. p/n
2046, the whole sys is around $1500. american

the 2046 sys doesnt do as much for me as the one on the ad cover,
that one isnt for my car i guess. bummer
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Old May 23, 2007 | 04:28 PM
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After much research and gathering of opinions I have decided on the ATI superdamper with 10% under drive when the time comes. It's not cheap but seems to be the best.
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Old May 23, 2007 | 06:46 PM
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Originally Posted by billybonesmusic
ANYONE HAVE A MARCH PULLEY SYS? OR SIMULAR MANUFACTURER
THAT THEY CAN SHARE THIER PRO'S AND CON'S WITH?
THANX.
I just installed the March Power and Amp series on my 1989 along with a new alternator and belt. The combo works great. The crank and WP pulleys are black powder coated aluminum, and the little alt. pulley is billet steel. No cons so far and the car seems to rev a little quicker. Alternator output stays above 14.2 on my digital gauge while in motion. Very high quality parts.

BTW, $136.00 plus ship from Thunder Racing.
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Old May 23, 2007 | 09:33 PM
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Originally Posted by BADDUCK
I just installed the March Power and Amp series on my 1989 along with a new alternator and belt. The combo works great. The crank and WP pulleys are black powder coated aluminum, and the little alt. pulley is billet steel. No cons so far and the car seems to rev a little quicker. Alternator output stays above 14.2 on my digital gauge while in motion. Very high quality parts.

BTW, $136.00 plus ship from Thunder Racing.
I have the same kit. Good quality stuff and I have been running them for about 2 years with no issues.
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Old May 24, 2007 | 02:34 AM
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I have billet specialties brackets in my setup and I had to modify them so the holes would line up with the heads and block. So unless you have a machine shop handy stick with MARCH.
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Old May 24, 2007 | 10:11 AM
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schweet, anyone have part #'s or roundabout cost?
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Old May 24, 2007 | 10:54 AM
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Read 3 up post.
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Old May 24, 2007 | 10:56 AM
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duhhhhhh, never said i wasn't tarted!!
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Old Oct 18, 2007 | 03:33 PM
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Originally Posted by BADDUCK
I just installed the March Power and Amp series on my 1989 along with a new alternator and belt. The combo works great. The crank and WP pulleys are black powder coated aluminum, and the little alt. pulley is billet steel. No cons so far and the car seems to rev a little quicker. Alternator output stays above 14.2 on my digital gauge while in motion. Very high quality parts.

BTW, $136.00 plus ship from Thunder Racing.
Thanks BADDUCK!!!

I just ordered myself a set a few minutes ago! That's the best price I've seen for these.

BTW - My understanding is this set comes with a new belt, although I could be wrong. Is there a source or p/n for a replacement belt? Do I have to get a replacement belt from March if/when I need it?

Last edited by TheCorvetteKid; Oct 18, 2007 at 04:23 PM.
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Old Oct 18, 2007 | 04:44 PM
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Originally Posted by TheCorvetteKid
Thanks BADDUCK!!!

I just ordered myself a set a few minutes ago! That's the best price I've seen for these.

BTW - My understanding is this set comes with a new belt, although I could be wrong. Is there a source or p/n for a replacement belt? Do I have to get a replacement belt from March if/when I need it?
I picked up the 4425 kit from Summit a few months ago and it was slightly cheaper. It does not come with a belt. While looking at the 4425 kit at Summit they listed the correct Goodyear belt and it fit great. SOTP feels like more pull on the top end.
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Old Oct 18, 2007 | 10:30 PM
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Originally Posted by TheCorvetteKid
Thanks BADDUCK!!!

I just ordered myself a set a few minutes ago! That's the best price I've seen for these.

BTW - My understanding is this set comes with a new belt, although I could be wrong. Is there a source or p/n for a replacement belt? Do I have to get a replacement belt from March if/when I need it?
Mine didn't come with a new belt. The proper belt #'s are included with the kit. I got mine at NAPA.
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Old Oct 18, 2007 | 11:30 PM
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Originally Posted by BADDUCK
Mine didn't come with a new belt. The proper belt #'s are included with the kit. I got mine at NAPA.
Awesome! Thanks .

I'm excited - can't wait for these pulleys to arrive. It's almost the end of Corvette season up here so I'm hoping to install 'em and try the car before putting it away for the winter.

Thanks again.
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To Anyone Try Out A March Pulley Sys?

Old Jun 18, 2010 | 05:36 PM
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On summits website for the March 4425 it says reccommended with automatics. Anyone with manuals using them with no problems?
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Old Jun 18, 2010 | 06:21 PM
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Originally Posted by armybyrd
On summits website for the March 4425 it says reccommended with automatics. Anyone with manuals using them with no problems?
I have the 6 speed, I doubt it matters though. Mine is still working great. Where did you dig up this old thread!
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Old Jun 18, 2010 | 06:27 PM
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Originally Posted by Pryderei

Only downside to the march is the alternator pulley is small too so at idle the interior lights will dim as will the headlights etc.
Small alternator pulley turns the alternator faster not slower. This should keep the lights from dimming at idle. I have had the March power & amp set for about 14 years, no problems.
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