Perf: KYB AGX Struts Neuspeed Sport Springs 5 Strut Bars (2 F/U, F/L, R/U, R/L) Sprint Front Camber Kit $15 Rear Camber Kit Corbin's A/F Gauge MSD DIS-2 Ignition System Some Regrind Cams that need High Compression (which I don't have) Ported Intake Manifold Ported Throttle Body Drop in K&N Filter and open airbox Custom 2 1/2 inch exhaust with Dual DTM Muffler Empty Catalytic Convertor Energy Suspension Motor Mount inserts Hurricane_GS Short Shifter Symborsky Shift Kit Clutchmasters Stage 3 Modular 225/50/16inch Wheels and Tires
Audio: Alpine CD Head Unit Alpine Flex4 25W X 4 for Fronts and Rears Alpine V-12 450W X 1 for Subs Infinity Reference Series 5 1/4 and 1 inch tweeter component systems for fronts and rears Blaupunkt 3 way 6x9's in the rears 3 MTX 5000 10" 12 ohm subs running 4 ohms mono
Flame Red SRT-4 GT40,8.5:1 Built Shortblock, Brian Crower Stage 2 Cams, etc etc etc...
#12030, "RE: What do underdrive pully kits do?" In response to Reply # 2
it's all physics... the stock pulley is pretty heavy compared to the underdrive pulleys (af/x or unorthodox). These lighter pulleys make it easier for the engine to get them going. It's based on moment of inertia and circular accelleration. But since it has to use less power to get the pulley going, the power is passed along to the wheels which will then make you go faster.
it's like when you twirl an umbrella... the smaller lighter ones are easier to twirl.
#12032, "RE: What do underdrive pully kits do?" In response to Reply # 4
AF/F Manufacturing makes a good one, and it is inexpensive comparatively. You can get it from http://www.howellautomotive.com for 160.00 (+ S/H) or if we still get a discount from http://www.ptuning.com then it is around 150.00 (+ S/H).
#12034, "RE: What do underdrive pully kits do?" In response to Reply # 6
under most circumstances the belts that come with the afx should do just fine.. just make sure they are on nice and tight to avoid any chirping.. some have gone and gotten diff brand belts and if you do a search you should be able to find what the part numbers are.
#12035, "RE: What do underdrive pully kits do?" In response to Reply # 7
The stock belts won't fit due to the size difference on the UD pulley. You have to use belts that are the same size as the ones that come with the pulley if you don't use those.
Perf: KYB AGX Struts Neuspeed Sport Springs 5 Strut Bars (2 F/U, F/L, R/U, R/L) Sprint Front Camber Kit $15 Rear Camber Kit Corbin's A/F Gauge MSD DIS-2 Ignition System Some Regrind Cams that need High Compression (which I don't have) Ported Intake Manifold Ported Throttle Body Drop in K&N Filter and open airbox Custom 2 1/2 inch exhaust with Dual DTM Muffler Empty Catalytic Convertor Energy Suspension Motor Mount inserts Hurricane_GS Short Shifter Symborsky Shift Kit Clutchmasters Stage 3 Modular 225/50/16inch Wheels and Tires
Audio: Alpine CD Head Unit Alpine Flex4 25W X 4 for Fronts and Rears Alpine V-12 450W X 1 for Subs Infinity Reference Series 5 1/4 and 1 inch tweeter component systems for fronts and rears Blaupunkt 3 way 6x9's in the rears 3 MTX 5000 10" 12 ohm subs running 4 ohms mono
Flame Red SRT-4 GT40,8.5:1 Built Shortblock, Brian Crower Stage 2 Cams, etc etc etc...
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