When we swapped on Weiand's smallest, 2.85-inch blower pulley and the recommended belt, we got some great low-end torque because the blower speed increased so dramatically (2.46:1 overdrive). But, top-end power was limited by the incredibly high intake manifold temps (200-plus degrees) and the blower belt was slipping. When we swapped on Weiand's smallest, 2.85-inch blower pulley and the recommended belt, we To try and cure the belt from slipping, we tried some over the counter belt dressing with no luck. To try and cure the belt from slipping, we tried some over the counter belt dressing with Determined to see this test through, we forced Weiand's shortest drivebelt on (not a good idea according to the folks at Weiand, but we figured just once won't hurt) and stopped the belt slip. Without the slip, we got over 12-psi boost and lots of detonation on the top end due to the extreme manifold temps. Determined to see this test through, we forced Weiand's shortest drivebelt on (not a good Here's where we measured boost and manifold air temps just below and behind the blower (check out the arrow). This hole may have to be drilled and tapped before installing the manifold, so keep that in mind. Here's where we measured boost and manifold air temps just below and behind the blower (ch POWER RUN2.33:1 overdrive Weiand 177ci Pro Street blower, 105-octane Shell unleaded, 383-cid Chevy tested on DTS dyno at Speed-O-Motive and Vrbancic Brothers Racing.RPMTQHPPSIBOOST TEMP*30005563187.113335005823888.113340006014578.313545006115248.315150006055768.215155005786058.21516,0005526308.81526,5005216459.51547,00048764910.1156MAX612652AVG569537* Indicates air temperature inside the intake manifold. Air temp in the dyno cell was monitored at a constant 87 degrees. SOURCES The Carb Shop 1461 E. Philadelphia Ontario CA 91761 909-947-3575 www.customcarbs.com Autotronic Controls (MSD Ignition) 1490 Henry Brennan Dr., Dept. SC El Paso TX 79936 Dynamic Test Systems (DTS DYNO) 4130 Product Dr., Dept. SC Shingle Springs CA 95682 Speed-O-Motive 131 W. Lang Ave. West Covina CA 91790 6-26/-869-0270 speedomotive.com Weiand -- A Division of Holley Performance Products 1801 Russellville Rd., Dept. SC Bowling Green KY 42102-7360 JE Pistons Autolite -- Allied Aftermarket Division 105 Pawtucket Ave., Dept. SC Rockford RI 02916 ISKENDERIAN RACING CAMS (ISKY) 16020 S. Broadway St. Gardena CA 90248 323-770-0930 323-515-5730 www.iskycams.com COMP Cams Air Flow Research (AFR) Valencia CA N/A www.airflowresearch.com Corteco TCI Automotive 151 Industrial Dr. Ashland MS 38603 662-224-8972 www.tciauto.com Holley Vrbancic Brothers Racing 1463 E. Philadelphia Ontario CA 91761 909-930-9980 Shell Global Solutions 3333 Hwy. 6 South, Ste. M1551 Dept. SC Houston TX 77082 Milodon 2250 Agate Ct. Simi Valley CA 93065 805-577-5950 www.milodon.net « | 1 | 2 | View Full Article Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!