421-Inch Small-Block Makes 839 HP on Port Injection Nitrous Hit!
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hotrod.com
421-Inch Small-Block Makes 839 HP on Port Injection Nitrous Hit!
Done right, nitrous oxide can add a lot of performance to your engine. To see what it can do we head to Westech to see a 421 small-block Chevy dyno tested.
Apr 11, 2023
Dyno Services
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Exciting Snowmobile Racing Experience with Beauregard Racing
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*HP at the end of the video* Our 1996 Ultra PS800 on the dyno when we firat got it! Its underpower for a PS800 but its a beautiful machine that holds a very special place inbour hearts. #jandpdynoservices #hpaddiction #dynorun #snowmobile #fastsleds
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*HP at the end of the video* Our 1996 Ultra PS800 on the dyno when we firat got it! Its underpower for a PS800 but its a beautiful machine that holds a very special place inbour hearts. #jandpdynoservices #hpaddiction #dynorun #snowmobile #fastsleds
TikTokj.p.dyno.services
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SB Chevy pump gas 421 making a little rumble on the Dyno today. #enginedyno #cncmotorsports | CNC-Motorsports
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SB Chevy pump gas 421 making a little rumble on the Dyno today. #enginedyno #cncmotorsports | CNC-Motorsports
FacebookCNC-Motorsports
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Here is a cool little video of a 421” SB2 headed engine we freshened/updated on the dyno today. It ended up making just over 880 bracket friendly horsepower! Thank you to the Marcum family for making the trip from West Virginia and trusting us with your engine needs! | Sunset Performance Engines LLC
0:55
Here is a cool little video of a 421” SB2 headed engine we freshened/updated on the dyno today. It ended up making just over 880 bracket friendly horsepower! Thank you to the Marcum family for making the trip from West Virginia and trusting us with your engine needs! | Sunset Performance Engines LLC
FacebookSunset Performance Engines
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421 SBC | Steve Nicoll Racing Ent.
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421 SBC | Steve Nicoll Racing Ent.
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SB Chevy pump gas 421 making a little rumble on the Dyno today. #enginedyno #cncmotorsports | CNC-Motorsports
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SB Chevy pump gas 421 making a little rumble on the Dyno today. #e…
3.5K viewsJul 21, 2020
FacebookCNC-Motorsports
Here is a cool little video of a 421” SB2 headed engine we freshened/updated on the dyno today. It ended up making just over 880 bracket friendly horsepower! Thank you to the Marcum family for making the trip from West Virginia and trusting us with your engine needs! | Sunset Performance Engines LLC
0:55
Here is a cool little video of a 421” SB2 headed engine we freshened/…
6.1K viewsMay 2, 2019
FacebookSunset Performance Engines LLC
421 SBC | Steve Nicoll Racing Ent.
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421 SBC | Steve Nicoll Racing Ent.
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FacebookSteve Nicoll Racing Ent.
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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