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My weekend toy
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<blockquote data-quote="RUNVS?" data-source="post: 16826246" data-attributes="member: 3198"><p>Here is a picture of the two extra blower pulleys I bought for the truck. Each one adds an extra pound of boost, which translates to about 30 extra horses per pound. When ambient air temperatures drop below 50 degrees, it will pick up another pound of boost due to the cold, dense air. The Shelby Super Snake F-150 comes with a 3.75-inch blower pulley and it is advertised as making 770 horsepower.</p><p></p><p>The 2.9 liter Gen IV Whipple supercharger with the 4.00-inch blower pulley makes 9 lbs. of boost. Mine is currently running the 3.75-inch unit and should be making ~11 lbs. of boost. Someday soon I plan to install an Autometer steering column pod and a boost gauge so that I can monitor the pressure.... especially when it gets cold.</p><p></p><p>[ATTACH=full]1763383[/ATTACH]</p><p></p><p>[ATTACH=full]1763384[/ATTACH]</p><p>9</p></blockquote><p></p>
[QUOTE="RUNVS?, post: 16826246, member: 3198"] Here is a picture of the two extra blower pulleys I bought for the truck. Each one adds an extra pound of boost, which translates to about 30 extra horses per pound. When ambient air temperatures drop below 50 degrees, it will pick up another pound of boost due to the cold, dense air. The Shelby Super Snake F-150 comes with a 3.75-inch blower pulley and it is advertised as making 770 horsepower. The 2.9 liter Gen IV Whipple supercharger with the 4.00-inch blower pulley makes 9 lbs. of boost. Mine is currently running the 3.75-inch unit and should be making ~11 lbs. of boost. Someday soon I plan to install an Autometer steering column pod and a boost gauge so that I can monitor the pressure.... especially when it gets cold. [ATTACH type="full" alt="2020 Ford F-150 pulleys (3).jpg"]1763383[/ATTACH] [ATTACH type="full" alt="2020 Ford F-150 pulleys (4).jpg"]1763384[/ATTACH] 9 [/QUOTE]
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