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IUP99snake · 11-13-2008, 09:24 AM

I have a 3.9" pulley. Its the same size that came with the procharger kit, and was designed to make 10LBS with a stock 99 cobra. That it did.

With an aviator longblock, O/R X pipe, Cat back, and 4" Morpheus powerpipe, the same pulley makes about 7-8LBS of boost. The morpheus pipe probably gave it an extra 2-3LBS of boost, but it lost more than that because the 03-up heads/cams flow much better, but also give the motor a 500RPM lower redline.

I briefly put on a 3.1" pulley and was rewarded with an extra 5LBS of boost at 3000RPM, but it wouldn't go any higher than 12LBS of boost after 4500RPM (probably because I had a crappy belt).

That 3.1" pulley is for sale, by the way. Anyone want it?

Homer

11-13-2008, 09:24 AM	#11 (permalink)
IUP99snake The Shocker Join Date: December 2002 Location: Downtown Orlando, Florida Posts: 1,612 0.63 per day Trader Rating: (1)	I have a 3.9" pulley. Its the same size that came with the procharger kit, and was designed to make 10LBS with a stock 99 cobra. That it did. With an aviator longblock, O/R X pipe, Cat back, and 4" Morpheus powerpipe, the same pulley makes about 7-8LBS of boost. The morpheus pipe probably gave it an extra 2-3LBS of boost, but it lost more than that because the 03-up heads/cams flow much better, but also give the motor a 500RPM lower redline. I briefly put on a 3.1" pulley and was rewarded with an extra 5LBS of boost at 3000RPM, but it wouldn't go any higher than 12LBS of boost after 4500RPM (probably because I had a crappy belt). That 3.1" pulley is for sale, by the way. Anyone want it? Homer ____________________________________ Lincoln Aviator Longblock \| P1-SC Procharger \| Front-Mount Intercooler \| BBK Twin 65MM Throttle Body \| gReddy Blowoff Valve \| 42LB Injectors \| Lightning 90MM Blow-Thru MAF \| Morpheus 4" Powerpipe \| Morpheus Blower-Brace \| "mystery" O/R X Pipe \| Mac Cat-Back \| Y2K 00R Rims \| Tremec 6-Speed \| Pro-5.0 T-56 Shifter with 5-speed knob \| Aluminum Driveshaft \| Fidanza 11" aluminum flywheel \| SPEC III clutch \| Kauffmann Motorsports Tune \| Auto-Meter Triple A-Pillar Boost/AF/Fuel gauges \|