Downsides to underdrive pullies
 

What type of problems or concerns should I have if I install a set of underdrive pullies? Are they difficult to install? Thanks for the info.

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1999 Mustang GT 35th Anniversary Edition - FMS 3.73s, Abbott Compensator, Steeda Tri-Ax Shifter, K&N Air Filter, Air Silencer Removed, 2 Chamber Flowmaster Mufflers

There aren't too many draw backs to pulleys. If you have some crazy stereo or something, there can be some charging problems. Richmond isn't that hot, so you don't have to worry about cooling problems. They aren't very difficult to install either.

So pretty good choice for a next modification.

None that I can tell! http://www.mustangworks.com/interact...rd/biggrin.gif http://www.mustangworks.com/interact...rd/biggrin.gif

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99 Electric Green Cobra/Medium Parchment Assembled 04/10/99 1464 of 4040
Tri-Ax shifter, K&N Air Charger System, Nitto DR'S
The FIX PRE 255RWHP & 261RWTQ Post 274RWHP & 275RWTQ After mod's 307RWHP & 304RWTQ
FRPP Shorty Headers, Bassani high flow cat's to x-pipe, Dynomax Ultra flow cat back's, March underdrive pulley's

There is a possible problem with the pulleys. The bolt that holds the crank pulley can come loose over time and cause major engine damage. This has been seen on more than a few Cobras or 4.6 GTs believe me. I got half my parts from a destroyed Cobra engine from this happening! The bolt even came loose on mine after one year of being perfectly tight. If you guys have these, periodically check this bolt.

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(96Cobra/softtop-3.73,almdrvsht,fancontrl,steeda sbfrmes+shifter,eibachspgs,pulleys,Bassani X pipe,C&L 80mm
Cobra DYNO 301rwhp horsepower w/out steeda timing adjuster
93 Ford Probe Gt(slower but turns)

No problems yet. I've had mine on for almost a year.

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1996 Cobra
FMS 4:10 gears
Flowmaster exhaust
Pro-M 77 MAF
ASP Underdrive Pulleys
62 mm Throttle Body
Cobra R rims
Steeda Tri-Ax shifter
JET chip
Eibach Lowering Kit
Steeda Upper and Lower Control Arms
Steeda X-Pipe
12.88@~107
1.95 60 footer

Hey what's up kbuckman? Haven't seen you around for awhile.