SBChevy 434ci, 15° - Dyno Testing
Chev SB 434 with 15 Degree Dart heads Dyno session at Chomiski Race Engines in Amarillo, Texas We spent a total of 12 hours at the workshop and 30 runs on the Dyno to get what we came for, 800hp on the screen. We ran the engine up on an out-of-the-box Pro Systems SV-1 on VP C16 and made 749hp on the first pull. A jet change on the 2nd pull saw a 20hp increase to 769hp @ 7000rpm. We changed it over to a Rons 'Flying Toilet' to test the myth of Methanol vs Gasoline. We made a total of 24 runs on Methanol & could only pull 755hp @ 7000rpm. We decided to go back to the Pro Systems SV-1 on VP racing Fuel and get the job done and walk away with the power we had in mind. On the 1st run back it made 792hp @ 7000rpm, then on the 2nd it went 793hp @ 7000rpm. We decided to pull 2° of timing out of it on the 3rd pull & it went 800.8hp @ 6900rpm with 655ftlb @ 5600rpm. Today at school we learned that Alcohol is for drinking & Gasoline is for Racing..........Hollywood !
Layout of Parts for a Chevy 434 Stroker Small Block
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SBC 427 Stroker Engine w/ AFR Heads Dyno Testing