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The Holley Sniper Transmission Controller (STC) is designed for common GM and Ford electronic 4-speed automatic transmissions. Three part numbers cover a complete range of applications—all Sniper EFI systems, Sniper 2 EFI-specific (M8 CAN connection), or a full standalone unit. The Sniper specific applications connect to your Sniper EFI system via CAN bus and are programmed through the existing Sniper 3.5 in. touch screen. No programming is available with PC computer software; however, the transmission functions can be data-logged and reviewed with Sniper PC software. The Standalone version includes a dedicated 3.5 in. touch screen and is primarily intended for carbureted engine combinations. GM and Ford 4-speed electronic overdrive transmissions are simple in operation. They have four speeds, with the top gear being an overdrive; and all have a lockup torque converter that eliminates any slippage when the lockup is applied. With a stock torque converter, the lockup should only be applied under light throttle conditions or excessive wear will occur. Upshifts, downshifts, and torque converter lockup are based on vehicle speed and throttle position (or optionally the MAP sensor) and are adjustable with the 3.5 in. touch screen. P/N 551-100: Replacement controller unit only P/N 551-101: Controller unit and power harness only P/N 551-102: Standalone kit for carbureted applications (includes power harness and hand-held programmer) P/N 551-103: Controller unit and power harness for use with Sniper 2 EFI systems Holley Sniper Transmission Controller features: * Adds electronic transmission control functionality to a Sniper 2 * Controls conventional electronic 4-speed transmission applications. GM 4L60/70/80E and Ford AODE and 4R70W - transmission specific harnesses sold separately: -- 558-405 – GM 4L60/70/80E -- 558-455 – 2009+ GM 4L60E -- 558-470 – 1998+ Ford 4R70W/4R75W -- 558-471 – 1992-1997 Ford AODE/4R70W * Tuning is performed through the 3.5 in. touch screen LCD (included with the Standalone version). Future compatibility will include 5 in. display and Bluetooth module * Tune upshifts, downshifts and WOT shift points * Full programmability of torque converter lockup * Full tuning of transmission line pressure (shift firmness) * Controls and layouts interface mirror Dominator and Terminator X MAX ECUs (except no paddle shift) * A MAP sensor is needed if using MAP for line pressure, which is usually only done with forced induction applications
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$599.95
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$728.95
$538.95
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$655.95
On Sale
Holley transmission installation kits come complete with everything you need to bolt a TKX or TKO transmission to a 28- or 50-ounce externally balanced small-block Ford engine (depending on kit selected). Built with a mixture of best brands (such as Lakewood, Hays, and Mr. Gasket), the kits include: a roller pilot bearing, bellhousing with dust shield, billet steel flywheel, clutch and pressure plate, hydraulic release bearing, and all hardware needed to install these components. Additional features and notes: * Lightweight cast aluminum bellhousing and steel block plate provide a factory-like installation and appearance * Billet steel, 24.5 lb., 157-tooth externally balanced flywheel for light weight and strength * 26-spline, 10.5 in. clutch disc offers superior clamping force for engines up to 500 hp * Roller-style pilot bearing offers improved shifting by reducing parasitic drag and transmission wear * Adjustable Hydraulic Release Bearing offers reduced pedal effort and easy installation * Works with OE or MSD high-torque starters * All hardware included
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$1,799.95
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$2,149.95
$1,424.95
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$1,933.95
On Sale
Holley offers complete T56 transmission installation kits for a variety of engine applications. These kits come complete with everything you need to bolt a GM-style Tremec T-56 or Magnum transmission to almost any Gen III or Gen IV small block Chevrolet engines with a 6- or 8-bolt flywheel. Built with a mixture of Holley's best brands, including Lakewood and Hays, each kit includes a bellhousing, billet steel flywheel, clutch and pressure plate, hydraulic release bearing, roller pilot bearing, and all hardware needed to install these components. * Kit 319-510 is set up to be used with the 6-bolt flywheel LS engines, which are the majority of the Gen III and Gen IV engines produced before 2009 (LS1, LS2, LS3, LS6, LS7, LM7, LQ9, L33, and similar truck engines). * Kit 319-511 is set up to be used with the 8-bolt flywheel LS and Gen V LT engines that come after 2009 (LSA, LT1, LT4, L83, and similar truck engines). Product features: * Lightweight cast aluminum bellhousing and stamped steel dust cover provides factory-like installation and appearance * Billet steel flywheel for light weight (28 lbs.) and additional strength * Roller-style pilot bearing offers improved shifting by reducing parasitic drag and transmission wear * 26-spline, 12 in. organic sprung clutch offers superior clamping force and smooth engagement for engines up to 550 naturally aspirated horsepower (500 with power adder) * Adjustable hydraulic release bearing offers reduced pedal effort and easy installation * Works with original equipment or MSD high torque starters * All hardware included (flywheel, transmission, and engine connections)
Not Yet Reviewed
$1,449.95
$1,303.95
On Sale
Holley EFI Dominator transmission harnesses provide control of your Tremec. The harnesses are terminated for VSS, reverse lockout, and reverse lights. Choose the one designed for your build.
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$228.95
$206.05
On Sale
Holley throwout bearings are made to withstand the wear and tear that clutches go through. They are designed to provide reliable service, race after race.
Not Yet Reviewed
$213.95
$192.55
On Sale
Experience the benefits of a modern hydraulic clutch system—with improved drivability and reduced maintenance requirements—courtesy of Holley's new line of hydraulic clutch conversion kits. These throwout bearing conversion kits are designed specifically for Chevrolet Camaro and Pontiac Firebird models and allow for easy conversion from a mechanical clutch linkage to a modern hydraulic clutch system. They include all necessary components for a straightforward installation: clutch master cylinder, clutch pedal with pad, clutch rod assembly, master cylinder mount and reinforcement plate, master cylinder reservoir kit, and all required mounting hardware. Pedal ratios have been optimized for perfect pedal feel and full engagement of the clutch system. With so many engine and transmission combinations available, Holley has left it up to the installer to decide on which release (or throwout) bearing and hydraulic lines will be used. The Holley hydraulic conversion kit is engineered to fit each model perfectly, ensuring a trouble-free installation and optimal performance. Each kit offers several advantages over traditional mechanical clutch linkage systems. First and foremost, they provide a smoother and more precise clutch engagement, resulting in improved drivability and reduced wear and tear on clutch components. Additionally, the hydraulic system eliminates the need for periodic adjustments and maintenance that are typically required with mechanical clutch linkages and the use of many modern transmissions such as the T56, TR6060, Magnum, TKX, TKO, and classic 4-speeds. Order the conversion kit recommended for your vehicle.
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$373.95
$336.55
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$349.95
On Sale
Holley transmission kickdown brackets are used to mount an overdrive transmission's kickdown cable to the carburetor. They're made of steel and feature a natural or gold iridited finish. These brackets will fit most Holley carburetors, with the exception of Dominators and any carburetor with a factory-installed Ford kickdown. Order the model designed for your carb/tranny application.
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$23.75
$21.38
On Sale
Holley LS clutch installation kits include all the hardware and components needed for a complete clutch install on a 6-bolt crank LS engine using a T-56 transmission. A 12 in. organic disc with a 6-spring helix sprung hub provides the superior grip needed for the strip, while the matched diaphragm-style pressure plate provides a pedal feel comfortable enough for the street. This provides 30 percent more clamping pressure and transmits that through a billet steel flywheel. Features: * 12 in. organic single disc clutch with 1 1/8 in. 26-spline hub for LS engines with 6-bolt crankshaft * 6-bolt billet steel flywheel provides strength and a fresh, new foundation for the clutch * Street/Strip clutch kit provides excellent holding strength with a smooth daily driver pedal feel * Designed for power levels up to 550 hp naturally aspirated Please note: Hydraulic release bearing to transmission bolts are not included.
Not Yet Reviewed
$1,249.95
$1,123.95
The hydraulic clutch line is responsible for transporting hydraulic fluid from your clutch master cylinder to your clutch slave cylinder—increasing fluid pressure to disengage the clutch, and decreasing pressure to engage the clutch. Holley high-flow clutch hoses serve as direct replacements for the factory originals. They allow for increased fluid capacity, and the braided steel line construction will improve clutch pedal feel—by minimizing expansion and contraction of fluid within the line that commonly occurs with most factory-style plastic/polymer lines. To make installation a snap, a roll pin and O-ring are included. Order the host recommended for your application.
Not Yet Reviewed
$105.95
On Sale
During every clutch upgrade, you should measure to see if a shim is necessary for installation. Shimming the release bearing ensures proper clutch engagements. These 6061 aluminum Holley release bearing shims are available in different thicknesses—and are sold individually or in sets.
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$48.09
$26.45
On Sale
When installing a new clutch master cylinder and slave cylinder/throw-out bearing assembly, it is highly recommended to replace the fluid reservoir. Holley now offers replacement hydraulic clutch master cylinder reservoirs for your modern muscle car that feature a polymer reservoir with a cap and line.
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$64.15
$35.28
On Sale
Holley transmission installation kits come complete with everything you need to bolt a T5 transmission to a 28- or 50-ounce externally balanced small block Ford engine (depending on kit selected). Built with a mixture of best brands (such as Lakewood, Hays, and Mr. Gasket), the kits include a roller pilot bearing, bellhousing with dust shield, billet steel flywheel, clutch and pressure plate, hydraulic release bearing, and all hardware needed to install these components. Additional features and notes: * Lightweight cast aluminum bellhousing and steel block plate provide a factory-like installation and appearance * Billet steel, 24.5-pound, 157-tooth externally balanced flywheel for light weight and strength * 26-spline, 10.5 in. clutch disc offers superior clamping force for engines up to 500 hp * Roller-style pilot bearing offers improved shifting by reducing parasitic drag and transmission wear * Adjustable Hydraulic Release Bearing offers reduced pedal effort and easy installation * Works with OE or MSD high-torque starters * All hardware included
Not Yet Reviewed
$2,149.95
$1,933.95
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