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Overview
Overview
Haltech Flexfit Cap - Black L-XL
View All Crate Engines
LS / LSX Crate Engines
The LS platform has become the benchmark for modern V8 performance. Lightweight, dependable, and ...
LT Crate Engines
The next generation of Chevrolet Performance is here. LT-series crate engines bring cutting-edge ...
Ford Crate Engines
For builders loyal to the blue oval, Billy’s Speed Shop offers authentic Ford Performance crate e...
Small Block Crate Engines
Few engines have earned the reputation of the Chevrolet small block. From classic muscle cars to ...
Big Block Crate Engines
Choosing a big block crate engine comes down to four decisions: displacement, configuration, fue...
BluePrint Engines
BluePrint Engines combine American craftsmanship with modern reliability. Every unit is dyno-test...
Engine Blocks
Choosing the Right Block
Performance engine blocks for LS swaps, and for Ford and Hemi builds, ar...
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Complete Transmissions24 products
Monster Clutch Co.64 products
Clutches & Flywheels137 products
Torque Converters & Flexplates229 products
Bellhousings & Conversion Kits137 products
Shifters & Linkage120 products
Differentials37 products
Driveshafts & Axles8 products
Transmission Mounts66 products
Control Modules & Harnesses24 products
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Plan Your Build
Free tools and configurators — get the right parts before you buy a single bolt.
Calculator
Gearbox Ratio Calculator
Gear speeds, cruising RPM and driveline characteristics for your trans, diff ratio and tyre size.
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Calculator
Fuel System Sizing Calculator
Size your pump, injectors, lines and regulator to your target power. Petrol, E10 and E85.
Open
Configurator
Holley Sniper EFI Configurator
Find the right Sniper throttle body EFI kit for your engine, carb flange and power target.
Configure
Configurator
Holley Terminator X Configurator
Select the right Terminator X ECU package for your LS, LT or traditional V8 application.
Configure
Parts Finder
Vehicle Parts Finder
Find parts matched to your specific make, model and year — filter the full catalogue by your vehicle.
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Guide
Racing Safety Equipment Guide
FIA & SFI ratings explained — what certification you need for your licence, series and car type.
Read Guide
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