Which Pontiac engine dominates: 421 or 455? Racing insights with Ed Smith
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Which Pontiac engine dominates: 421 or 455? Racing insights with E…
1 month ago
MSNBarryTsGarage
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 …
3.2K viewsJul 15, 2017
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1963 Pontiac Catalina 421 HO Tri-Power: The Original GTO's Bigger, More Muscular Sibling
1963 Pontiac Catalina 421 HO Tri-Power: The Original GTO's Bigger…
4 months ago
autoevolution.com
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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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…
2.8K viewsJun 12, 2022
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Brad Sathers Butler-Powered 1970 Pontiac Trans Am Butler Performance Engine Built By @bbtfab Video Credit: @NotStockPhoto We offer each individual part of this build on our website, AND we offer all of this combo in complete KIT form (shortblock and longblock kit versions) that is ready for you or your builder to assemble. For questions about this or to get a free quote started, email us at tech@butlerperformance.com. And for details on what we sell or to learn more about the “Butler Process” ch
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Brad Sathers Butler-Powered 1970 Pontiac Trans Am Butler Performa…
11.6K views6 months ago
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Beast Butler 461 Pontiac “Butler Performance supplied the rotating assembly, did the machine work to the block including having to sleeve 2 cylinders, Kauffman d port aluminum heads, Crower 60243 Flat tappet cam, Scorpion roller rockers, Performer Intake , Doug’s 1 3/4 headers, supplied by Butler, AED 820 cfm Double Pumper, 2:41 posi rear end, stock converter and turbo 350 trans. It’s a torque beast. Thanks again.” - David Ferguson We offer each individual part of this build on our website, AND
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Beast Butler 461 Pontiac “Butler Performance supplied the rotatin…
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Listen to that Engine… Joe Gulla's AMAZING 1967 GTO with a Butler …
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1970 Pontiac GTO Judge with a Butler 461 Engine The motor has …
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68’ Pontiac Firebird 461 Stroker by Butler Performance Via: Tony Cha…
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Butler 600hp crate engine picked up by Greg Watson We offer each ind…
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aerocorner.com
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1200 hp Butler-Powered 1969 Pontiac Firebird It features a 1,20…
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68’ Pontiac Firebird Butler 461 Stroker Video Credit: Tony Chavez…
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1969 Pontiac Lemans GTO Judge Clone by Carolina Muscle Cars In…
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Pontiac 400 W/621 Tq & 605.5 Hp On Pump Gas! By Butler Performance
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