In this video we dyno test 3 of the most popular street carburetors on Todd Browns 389 Pontiac. Todd came from Traverse City Michigan, to have his 389 built for the 1965 Pontiac GTO 4 speed he is restoring.
The Carburetors Dyno Tested:
Holley 670 Street Avenger
Holley 650 Brawler Double Pumper
Quick Fuel 750 Slayer
This video shows the value of dyno tuning. On the first pull Todd's 389 made 318HP. After multiple timing and carburetor changes it made 358HP, a 40HP improvement. We used a Comp Cams XR276HR Hydraulic Roller Camshaft, and an Edelbrock Performer RPM intake manifold.
Other than that, this is stock build.
You can follow Todd’s progress on Facebook:
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You can find @SalterRacingEngines here:
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Thanks to all my team, Alex, Darrell, Dave and especially Mike Kimble who really took his production and editing of this video to a new level. AG
