Better Than Factory: Freedom’s Street Series Cummins Long Blocks
With Freedom Racing Engine's long blocks, you get an upgraded, more reliable engine solution—but also one that gets you back on the road ASAP.
fleece performance
SPIED: The 6.7L Power Stroke That’s Bringing 1,400+ HP To Indy
Inside a wild Seventy 2 Fast class engine build, Crazyhorse takes second at Cleetus MacFarland’s AWD vs. RWD shootout, and the blueprint for a 1,000hp 7.3L.
Diesel Truck Wars
Drag racing in North Carolina, Paul Cato preps for Cleetus MacFarland’s AWD vs. RWD shootout in Florida, and a new dirt drags series comes to the Midwest.
Hub Dyno Magic: 2,600+ HP Duramax
Dan Zelten’s date with the hub dyno yields nearly 2,700 hp, inside a 10-second LB7 work truck, and a supercharged 7.3L rat-rod debuts at the annual Summit 7.3 event.
PRI 2025: High-Caliber Diesels Captivate In Indy
Judging by all the attention compression ignition received at this year’s Performance Racing Industry show, it’s clear we’re in the golden age of diesel performance and technology.
Is Ram Underrating Its Factory Horsepower Figures?
Proof that the ’25-newer Cummins is more powerful than we thought, TSD’s IFS Super Duty nears completion, and racers come out of the woodwork for a shot at $100K.
Heavy-Duty And O-Ringed: Freedom Series 6.0L Heads
With a superior casting, oversized valve seats, and O-rings as standard equipment, Fleece’s new 6.0L Power Stroke cylinder heads are poised to change the game.
The First Duramax To 3,000-rwhp
The first Duramax to 3,000-rwhp, Nathan Wheeler’s hunt for a billet-aluminum Cummins, and Derek Rose plans to bring the world’s fastest 4x4 diesel truck out of retirement.
High-Quality DIY: The Nissan Titan XD Lift Pump Rebuild Kit That Will Save You Hundreds
Fleece Performance Engineering’s affordable, common-sense fuel system solution provides the parts (and detailed instructions) every Titan XD owner needs to rebuild their lift pump.
Hoosier State Showdown 16
Fleece Performance Engineering’s hometown sled pull attracts some of the nation’s best Limited Pro Stock and Pro Street diesel trucks.
Under Bed Fuel Filter Upgrade For ’19-’24 Rams
Trade in plastic for aluminum, simplify water separator changes, and cut your filter costs in half with Fleece Performance Engineering’s latest bolt-on solution for ’19-’24 Rams.
The Road To 4,000 Horsepower
A 10-second Mercedes-Benz sleeper, a 4,000hp billet-aluminum block Cummins build, and the common-rail 7.3L that never came to be.
2,000 LB-FT From A Stock Bottom End L5P Duramax?
1,500 hp and 10-second quarter-miles from a pair of factory long block L5P Duramax’s, ODSS race prep for Indy, and finding the limits of a 7.3L Power Stroke.
TSD’s New Billet Bullet
Billet block engines, Rudy’s and U.C.C. prep, and a major breakthrough for 68RFE transmission technology.
998 HP P-pumped Square Body
The ultimate old-school Cummins swap, added bling for the world’s fastest Duramax, and Cleeter’s AWD Vs RWD no prep race is locked in for October 1st.
High Stakes 3.0
Super Duty body, second-gen Dodge chassis, deck-plate 6.7L Cummins—and built to win. Nick Zaenkert’s Ford is putting the Limited Pro Stock field on notice.
The Aftermarket Injector Return Line Fitting Every 6.7L Power Stroke Needs
Trade your 6.7L Power Stroke’s failure-prone, plastic injector return line fitting in for a heavy-duty aluminum, double O-ring sealed replacement from Fleece Performance Engineering.
Race To The Sand: Truck And Tractor Pulling From NFMS 2025
Four days at the largest indoor farm show in America. Four nights of the finest wintertime sled pulling in the world.
Improved Under Bed Filtration
Fleece Performance Engineering’s new primary fuel filter assembly means simpler, more affordable filter changes for your ’17-’24 Ford.
Modern Diesel Drag Racing, Summed Up In A Picture…
Fortifying the 48RE, wintertime truck and tractor pulling in Kentucky, Ford recalls nearly 300,000 Super Duty’s, and Rod MacMaster’s radial-tire Corvette receives its billet-aluminum Cummins.
PRI 2024: Once Again, Diesel Performance Makes A Statement
Billet engines and turbos, high-rpm fueling, cutting-edge electronics, and the fastest oil-burners in the world…the diesel industry arrives in force at the 2024 PRI Tradeshow.
A Performance-Friendly Sending Unit For 7.3L & 6.0L Power Strokes
Eliminate aeration, draw straw, and old-age issues with Fleece Performance Engineering’s new SureFlo sending unit for ’99-’07 Fords.
Double Or Nothin’
Evan Rusk’s cutting-edge, Pro Street class Cummins puller is no gamble—it’s a surefire front-runner.
Hoosier State Showdown XV
Fleece Performance Engineering’s annual truck and tractor pull headlines the Labor Day weekend entertainment in smalltown Indiana.
Camping, Racing, And Winning—All In A Weekend’s Work
A billet, Duramax-powered Camaro hits the dyno, Cummins-powered Rams, Fords and GM’s dominate a truck pull in west Indiana, and the ultimate Duramax tow-rig could be yours.
The Comprehensive Transmission Cooler Upgrade Your ’94-’07 Dodge Needs
Fleece’s second and third-gen transmission cooler kits boast a direct drop-in design, heavy-duty lines, and twice the heat rejection vs. stock.