632 CID Race Engine Makes 1261 HP with Holley 1250 Ultra Carb
Steve Furr of Furr Motorsports, a 2009 NHRA Division 2 Top Dragster champion, is in the process of dyno testing his 632 cubic inch big block built by PAR Racing Engines in Spartanburg, South Carolina. The engine was just tested using Holley's 1250 Ultra Carburetor and managed to pull 1261 horsepower at 7200 rpms. “The new Holley Ultra 1250 carb jetted up to 100, made the same horsepower as my old tricked out carb did…and with only an intermediate and main jet changes. Nothing else.” says Furr.
The 632 uses Brodix 12-degree aluminum heads, intake and aluminum block. It's outfitted with JE pistons, a Milodon oil pan and gear drive, Manley steel rods and Holleys Ultra 1250 cfm carburetor. According to Furr, it’s the most powerful engine PAR has made using a single carburetor. “The engine will be placed in a 2011 240" American Racecars swing-arm dragster, says Furr. “The carb is very responsive and makes good power and torque. It’s also extremely light weight. This is definitely going to be a good piece!”
Furr is also a five-time IHRA AllStar and Divisional Champion, as well as a three-time IHRA World Champion and two-time IHRA Sportsman Drive of The Year.