David Lloyd's Butler Performance built 421 Tri-power engine on the Dyno. Bored and stroked to 453 cu.in., compression ratio lowered to 9.4:1 for pump gas, B.P. ported & polished cast iron heads, B.P./Comp hyd roller cam. Going in David's 1965 GTO. www.butlerperformance.com #ButlerPerformance #Pontiac | Butler Performance Pontiac
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David Lloyd's Butler Performance built 421 Tri-power engine on the …
3.3K viewsJul 15, 2017
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421 SUPER DUTY ON THE DYNO @ Butler Performance!! This 421 SD is using the early "306" heads. These flow a little less than the 1962/ #127's and much less than the 1963/ #980 heads, but it still made great power. Almost 500 HP and well over 500 ft.lbs. of torque!! We actually have both a 1962 389 SD with #127 heads and 1963 421 SD with #980 heads in the shop now that we'll be finishing soon. We love working on these old, rare SD's and really love to hear them scream on the dyno! #ButlerPerforman
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421 SUPER DUTY ON THE DYNO @ Butler Performance!! This 421 SD i…
4.1K viewsAug 25, 2015
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1963 Pontiac Catalina 421 HO Tri-Power: The Original GTO's Bigger, More Muscular Sibling
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autoevolution.com
1.2K views · 73 reactions | We are revving it up for the weekend! We hope you are too! Butler Performance Aluminum 505 Pontiac Engine with a BP/FAST Sportsman XFI direct port EFI system and our CNC ported Edelbrock heads. This engine made 682 HP & 692 TORQUE! | Butler Performance Pontiac | Facebook
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1.2K views · 73 reactions | We are revving it up for the weekend! We …
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1.1K views · 93 reactions | Dyno Tuesday: Tom Jones' 474ci Butler Performance engine making 580+ HP and 600+ Ft.lbs. of TORQUE on pump gas! -Check out last weeks Motor Monday for more pictures and details of this beauty! #ButlerPerformance #Pontiac #DynoTuesday | Butler Performance Pontiac | Facebook
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1.1K views · 93 reactions | Dyno Tuesday: Tom Jones' 474ci Butler …
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1K views · 68 reactions | Dyno Tuesday: Jeff Kuhrt's 467 Butler engine making 501 HP and 589 ft.lbs. of TQ on the dyno. -Check out last weeks Motor Monday for some more pictures and details on this Butler engine! #ButlerPerformance #Pontiac #DynoTuesday | Butler Performance Pontiac | Facebook
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1K views · 68 reactions | Dyno Tuesday: Jeff Kuhrt's 467 Butler e…
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1971 Firebird Formula With a 461 Butler Performance Engine Builder: LowCo Joe’s Joe Knepper From SEMA 2017 Video Credit: Internal Combustion/ YT | Butler Performance Pontiac
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1971 Firebird Formula With a 461 Butler Performance Engine Builde…
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6.9K views · 463 reactions | Pontiac GTO first drive with Butler Perfor…
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15K views · 1.4K reactions | Beast of a car. 700hp 1977 Pontiac Trans A…
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4.3K views · 171 reactions | Listen to that Engine… Joe Gulla's AMAZIN…
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1970 Pro Touring Pontiac GTO Judge Butler 461 The motor has a …
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1978 Pontiac Trans Am with a Butler 461 engine Via: Brett Johnson We …
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5K views · 459 reactions | Pullin this beast out the garage. Pontiac...
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28K views · 698 reactions | Whole town came to see this Beast Ponti…
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Volume Up! Butler-Powered 700 HP Trans AM Race Car on the Dyno! …
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44K views · 1K reactions | Imagine this pulls up next to you at the...
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1962 Grand Prix 421 Super Duty: A Look Back at Pontiac's Ultra-Rare …
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Butler Performance on Instagram: "68’ Pontiac Firebird Butler 461 St…
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