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xxkazp3rxx -> RE: Heres the Rematch 04 Cobra racing CLS 55 AMG from 20 to 160 Insane Race (3/13/2008 9:18:19 PM)
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well you have 2 types of pulleys.. upper and lower... the uppers are normally measured like 2.76, 2.81, 2.93, etc. they all add a certain number of psi which adds a ton of hp/torque... lower pulleys are in 2# (lbs), 4, 6, 8, etc. it normally adds approx that many psi.. ie; 2# lower = + 2psi, 4# lower = 4psi... The eaton is only meant to handle to much boost... most people with ported blowers which are a lot more efficient and doesn't create as much heat, run a 4# lower with a 2.81 pulley which is right around the sweet spot for the eaton. If you create to much boost... ie: 2.8 pulley and a 6# lower... you run the risk of overheating the eaton, which can cause it to fail and heat soak creating power loss. Go check out CobraBob's site.. a lot of good info for newbie cobra owners.. http://stangshiftergaskets.com/2003_2004faqs.htm Also check out this site for numbers.. http://www.stiegemeier.com/faq.html Stiegemeier has ported more Cobra blowers then anyone... he knows his shat
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