Most 454 HP?

[BenPerfected]

What is most HP anyone has seen from a single carb NA 454 CI BBC? Any combination at at a max of 8500 RPM.

[Griff]

I have friend with 454's(maybe 468's) making around 700hp with solid rollers, AFR's, and spinning at around 6500rpms.

[Ratickle]

This is the most interesting 454 I know of. Don't know what it would do if re-cammed and spun to 8500 though.

Not single carb, injected.


Fast Mast
Mast Motorsports Unveils LSX 454 SS Engine
Posted November 25 2008 11:38 AM by VETTE Mag
Filed under: Miscellaneous



Mast Motorsports is pleased to release its all-new LSX 454 SS turnkey, fuel-injected engine package. This engine produces a dyno-proven 700 STD horsepower at 6,600 RPM and 600 lb-ft of torque at 5,000 RPM using 92-octane pump gasoline--with ZERO engine knock!


• Get a Free Quote • Find a Local Dealer
Each Mast LSX 454 SS crate engine is hand-built, blueprinted, and features only the finest-quality, name-brand components from Callies, Mahle, Melling, ARP, Manley, and Ferrea. The iron-block 454 boasts features like a wet-sump oiling system, GM LS7 heads with custom CNC ports and a multi-angle valve job, a matched GM LS7 short-runner intake, a 90MM drive-by-wire throttle body, and a bulletproof forged bottom end that can also handle the rigors of daily street use. A purpose-designed cam specs out at .666 valve lift on both intake and exhaust lobes for a broad power curve. The unique lopey idle will have you grinning from ear to ear while commanding the utmost respect from all who hear it.
Countless hours of highly sophisticated dyno testing on an in-house SuperFlow NSCR SF-902 engine dyno have resulted in maximum horsepower and extreme durability. Each engine is precision calibrated using Mast’s exclusive M-90 fully sequential ECM with integrated wide-band O2 and wide-band knock-sensor capability. Initial knock testing and validation uses real-time, in-cylinder pressure measurement for maximum power under any condition with no engine knock. This allows for safe operation at peak power levels using any 91- to 93-octane fuel. Once the engine dyno testing is completed, Mast then installs the engine in its actual application to perform transient testing and finalize the calibration.
For full specifications, dyno results, and to see Mast’s full line of GM Gen IV Hot Rod, Muscle Car, Off Road, Race Prepped, and Black Label Racing engines, log on to www.MastMotorsports.com or call 1-936-560-2218.

[Excalibur Racing]

LSX is the New iron small block, this smallblock can be bored and stroked to 500 cu.in. made to supercharge too! smallblock, smallblock!!

[Mrhorsepower1]

I just finished a 472 cu.in. small block chevy with 15 degree high port heads and 1 X 4 carb. 800 HP 8,000 rpm NO power adders.

[planetwarmer]

Are you guys having problems wearing out bearings or anything punching out and stroking a small block that large?