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
0:40
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
4.1K viewsAug 25, 2015
FacebookButler Performance Pontiac
Butler Performance built 421 Tri-power engine
0:52
Butler Performance built 421 Tri-power engine
1.7K viewsJul 17, 2017
YouTubeButler Performance Pontiac
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
0:52
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
3.2K viewsJul 15, 2017
FacebookButler Performance Pontiac
EZ-Street™ Butler Performance
4:35
EZ-Street™ Butler Performance
4.2K views3 weeks ago
YouTubeEdelbrock USA
BEAST Pontiac (Butler-Powered) *volume up*
0:19
BEAST Pontiac (Butler-Powered) *volume up*
370.3K views1 month ago
YouTubeButler Performance Pontiac
1968 Pontiac Firebird Butler 461 Stroker
0:07
1968 Pontiac Firebird Butler 461 Stroker
25.9K views1 week ago
YouTubeButler Performance Pontiac
AJ Discovers Butler Performance! - Gen Z Garage Episode 57
7:44
AJ Discovers Butler Performance! - Gen Z Garage Episode 57
442 views1 month ago
YouTubeGen Z Garage
0:09
Pontiac Firebird Butler 500 ci engine *Volume up*
13.9K views2 weeks ago
YouTubeButler Performance Pontiac
15:49
The Forgotten Pontiac 421 That Started a Muscle Car War
516 views1 month ago
YouTubeThe Garage Legends
0:28
“Thank you for the help with the Pontiac engine” Iron Horse Restorations / Rodney Huber assembled one of our machined/blueprinted/ready to assemble Engine Kits using a block he provided that we put through the complete "Butler Process" Link for this kit: https://butlerperformance.com/c-1267471-crate-engines-and-builder-kits-crate-engine-builder-kits.html For question about this or to get a free quote started email us at tech@butlerperformance.com. #pontiac #pontiacfirebird #pontiactransam #ponti
23.7K views10 months ago
FacebookButler Performance Pontiac
0:11
Butler-Powered 800hp 1964 Pontiac Catalina
22.8K views1 month ago
YouTubeButler Performance Pontiac
0:08
700hp ’77 Pontiac Trans Am Butler Performance engine under the hood
38.1K views11 months ago
YouTubeButler Performance Pontiac
0:09
Volume up! Pontiac Firebird powered by 500 ci Butler Performance engine! Video Credit: horsepower junkies on YT We offer each individual part of this build on our website, and we also provide all of these components in complete kit form (short block and long block 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 Proces
28.8K viewsMay 13, 2025
FacebookButler Performance Pontiac
0:07
68’ Pontiac Firebird Butler 461 Stroker Video Credit: Tony Chavez/YT This is pure Pontiac power. All the parts in this engine build are available on our site, or you can get the whole combo as a shortblock or longblock kit ready for assembly. Questions or quote requests: tech@butlerperformance.com More info about our products and the Butler Process: butlerperformance.com #pontiac #pontiacfirebird #pontiactransam | Butler Performance Pontiac
90K views4 months ago
FacebookButler Performance Pontiac
0:16
1200 hp Butler-Powered 1969 Pontiac Firebird
14.3K views3 months ago
YouTubeButler Performance Pontiac
0:28
Roger Bolliger’s Butler-Powered 700 HP Trans AM Race Car
12.5K views9 months ago
YouTubeButler Performance Pontiac
0:13
Brad Sathers Butler-Powered 1970 Pontiac Trans Am
27.6K views6 months ago
YouTubeButler Performance Pontiac
0:13
'72 Pontiac GTO Butler 461 Stroker *volume up*
13.3K views2 months ago
YouTubeButler Performance Pontiac
0:06
Butler Performance on Instagram: "68’ Pontiac Firebird Butler 461 Stroker Video Credit: Tony Chavez/YT This is pure Pontiac power. All the parts in this engine build are available on our site, or you can get the whole combo as a shortblock or longblock kit ready for assembly. Questions or quote requests: tech@butlerperformance.com More info about our products and the Butler Process: butlerperformance.com #pontiac #pontiacfirebird #pontiactransam"
259.6K views4 months ago
Instagrambutlerperformance
0:28
78 Pontiac Trans Am 500+ HP Butler 461 Engine
25.4K views3 months ago
YouTubeButler Performance Pontiac
0:28
1978 Pontiac Trans Am with a Butler 461 engine
16.2K views8 months ago
YouTubeButler Performance Pontiac
0:15
Driving a Butler-Powered 700 HP Pontiac Race Car
21.2K views6 months ago
YouTubeButler Performance Pontiac
0:20
1970 Pontiac GTO Judge with a Butler 461 Engine
34.9K views5 months ago
YouTubeButler Performance Pontiac
0:17
Butler 600hp crate engine picked up by Greg Watson 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” check out our website www.butlerperformance.com . #pontiac #pontiaconly #
3.9K viewsOct 10, 2024
FacebookButler Performance Pontiac
0:28
78 Pontiac Trans Am 500+ HP Butler 461 Engine
31.2K views11 months ago
YouTubeButler Performance Pontiac
12:03
The Shocking Truth behind Pontiac Banned 421 Super Duty Engine!
333.8K viewsFeb 28, 2025
YouTubeRare Car Storys
0:08
1974 Pontiac Ventura with a Butler 496 engine
27.7K views11 months ago
YouTubeButler Performance Pontiac
0:32
Butler Upgraded ’69 Pontiac Bonneville on the Dyno
39.9K viewsOct 1, 2024
YouTubeButler Performance Pontiac
0:14
68’ Pontiac Firebird 461 Stroker by Butler Performance
16.4K views11 months ago
YouTubeButler Performance Pontiac
4 Speed '72 Pontiac GTO, ‪@butlerperformancepontiac‬ 461 Stroker Motor & Sniper EFI! First Ride!
23:18
Find in video from 09:20Engine and Performance
4 Speed '72 Pontiac GTO, ‪@butlerperformancepontiac‬ 461 S…
3.9K viewsApr 18, 2024
YouTubeMcLovin Garage
See more