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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
( 2 )
$599.95
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$728.95
$538.95
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$655.95
On Sale
FiTech Go Shift transmission controllers are standalone electronic transmission control kits. If you plan on upgrading your transmission and you're having trouble with the wiring, back up lights, or shift points, the new Go Shift system is for you. Now you can have the luxury of a modern transmission for better response, better fuel economy, and overall reliability thanks to this system.
( 10 )
$599.00
$539.10
On Sale
Centerforce dual friction clutches generate up to a 90 percent increase in holding capacity over stock systems. These clutch-and-disc sets are designed for engines producing high horsepower and big torque outputs. Perfect for 4WD vehicles, all Centerforce clutch systems provide smooth engagement and light pedal pressure without compromising high performance.
( 305 )
$556.95
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$881.95
$501.26
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$793.76
Instant Rebate
Torque converters are considered one of the most mysterious mechanical components in today's vehicles. They function like a clutch, and keep the engine running even when the vehicle comes to a halt. By designing the stall speed to match both the engine and desired stall speed, ACC Performance converters help low-end idle speeds, improve performance, and acceleration. ACC Performance Products has emerged as an out-right leader in torque converters and here's why: * Boss Hogs are welded, not furnace-brazed; furnace brazing is not the best way to adhere torque converter components, it will erode and ruin the stators and all rotating parts * Industrial Torrington bearings handle more torque than smaller, uncased needle bearings * Aircraft aluminum washers instead of fiber washers put more horsepower and torque directly to the ground * ACC converters are hand-built and tested to ensure that you get the best converter money can buy * With returns below one percent, you are assured of the highest quality parts available * Street Bandit converters are designed to handle as much as 650 hp * Custom-engineered turbine hubs maintain the highest quality, strength, and durability * Stators are built with high-flow vents and channels for greater cooling to handle greater power and higher temperatures * Engineered with a single bolt pattern that makes ACC converters surprisingly light to free up your motor and allow it to gain rpm quicker Notes: * Boss Hog Street Bandit torque converters are not designed to handle the extreme shock and abuse of nitrous oxide or trans-brakes * It is imperative that a transmission cooler be added with any torque converter that is rated over stock stall speed
( 99 )
$508.55
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$665.76
Instant Rebate
Torque converters are considered one of the most mysterious mechanical components in today's vehicles. They function like a clutch and keep the engine running even when the vehicle comes to a halt. By designing the stall speed to match both the engine and desired stall speed, ACC Performance converters help low-end idle speeds, improve performance, and acceleration. ACC Performance Products has emerged as an out-right leader in torque converters and here's why: * Boss Hogs are welded, not furnace-brazed; furnace brazing is not the best way to adhere torque converter components, it will erode and ruin the stators and all rotating parts * Industrial Torrington bearings handle more torque than smaller, uncased needle bearings * Aircraft aluminum washers instead of fiber washers put more horsepower and torque directly to the ground * ACC converters are hand-built and tested to ensure that you get the best converter money can buy * With returns below one percent, you are assured of the highest quality parts available * LS Street Bandit converters are designed to handle as much as 650 hp * Custom-engineered turbine hubs maintain the highest quality, strength, and durability * Stators are built with high-flow vents and channels for greater cooling to handle greater power and higher temperatures * Engineered with a single bolt pattern that makes ACC converters surprisingly light to free up your motor and allow it to gain rpm quicker Notes: * LS Boss Hog Street Bandit torque converters are not designed to handle the extreme shock and abuse of nitrous oxide or trans-brakes * It is imperative that a transmission cooler be added with any torque converter that is rated over stock stall speed
( 10 )
$519.28
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$621.04
XClutch Stage 1 clutch kits offer a variety of performance upgrades for both street and track applications. They are designed in-house and normally utilize a single plate organic, ceramic, or carbon friction disc along with an upgraded factory-style pressure plate. XClutch kits utilize a similar mechanism to the factory clutch, making them ideal enhancements for most vehicles with low to mid-level performance modifications. Stage 1 clutch kits are available in three distinct performance clutch packages—sprung, rigid solid, and steel-backed organic. Features and benefits of each: * 1A sprung organic—this range has been specifically designed for street vehicles that have minor engine and general performance modifications. These kits offer a sprung organic friction disc that allows for great drivability, while offering improved clamping force through the use of a performance pressure plate. * 1G rigid solid organic—with a rigid center version of the organic disc, this range is ideal for street vehicles and light track use. These kits are often available with a lightweight alloy pressure plate and performance flywheel. * 1T steel-backed organic--this range offers a higher burst strength by bonding the organic friction material directly to a steel backing plate. These kits are ideal for high performance vehicles used on the street with occasional track use.
( 5 )
$506.32
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$803.81
Action Clutch Ironman sprung clutch kits are specifically designed for track-use applications and offer a 250 percent increased holding capacity. Utilizing extremely durable American sintered iron friction material, the spring hub-type discs feature full enclosed spring retainers and American-grade rivets. Best suited for those not looking to upgrade to a multi-disc kit yet, but who want to enjoy something affordable with a high torque holding capacity, these kits offer nearly double the clamping force which increases the torque capacity. The Ironman kits also offer some slippage on takeoff, which champions these kits as "go-to" kits with their repeatability and endurance. The clutch engagement is aggressive with an on/off feel and the kits will not introduce clutch chatter, but will have light engagement noise and some gear rattle. Action Clutch Ironman sprung clutch kits go through multiple quality checks after assembly, ensuring quality. Select the kit designed for your vehicle. Pressure plate and clutch disc features: * All clutch covers feature ductile iron friction plate * Reinforced heavy-duty drive straps * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American sintered iron friction material * American grade rivets
Not Yet Reviewed
$535.46
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$686.66
The SACHS dual-mass flywheel is the key to first-class passenger car and light commercial vehicle drivability. The driver and occupants are aware of reduced driveline and body noise and enjoy smoother travel with more pleasant gear shifts. SACHS offers dual-mass flywheels for many OE applications, so be sure to check for yours when replacing the clutch.
( 2 )
$504.99
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$783.99
On Sale
Centerforce LMC Series pressure plates are specifically designed to dramatically reduces engine rotating mass. These lightweight, SFI approved competition pressure plates are intended with most road racing and circle track applications in mind. Centerforce machines these special pressure plates from high-strength aircraft-grade billet aluminum and they use their patented ball bearing actuated diaphragm and centrifugal weight system for maximum grip while maintaining a comfortable and controllable clutch pedal. When used in conjunction with Centerforce's aluminum flywheels, LMC series brings the term light weight to an unparalleled level.
( 2 )
$682.95
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$734.95
$614.66
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$661.46
On Sale
Centerforce LMC Series is a specifically designed low inertia performance clutch that dramatically reduces engine rotating mass. These light weight, SFI approved competition clutches are intended with most road racing and circle track applications in mind. Centerforce machines these special pressure plates from high-strength aircraft-grade billet aluminum and then attach a special heat-treated replaceable friction surface. The Centerforce LMC Series friction disc utilizes a dual-segmented carbon composite lining for improved cooling and excellent torque capacity. Light Metal Clutch assemblies from Centerforce use their patented ball bearing actuated diaphragm and centrifugal weight system for maximum grip while maintaining a comfortable and controllable clutch pedal. When used in conjunction with Centerforce's aluminum flywheels, LMC Series brings the term lightweight to an unparalleled level.
( 4 )
$787.95
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$839.99
$709.16
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$755.99
Quarter Master flywheels are an ideal combination of durability and light weight for today's high-rpm racing engines. These flywheels are specially engineered and designed to withstand the stresses of modern race engines. If you don't want to be left in the dust at the starting line--if you want the win--then Quarter Master flywheels are the right choice for you!
Not Yet Reviewed
$802.89
Action Clutch Ironman unsprung clutch kits are specifically designed for track-use applications and offer a 250 percent increased holding capacity. Utilizing extremely durable American sintered iron friction material, the rigid or unspring hub-type discs feature American-grade rivets. Best suited for those not looking to upgrade to a multi-disc kit yet, but who want to enjoy something affordable with a high torque holding capacity, these kits offer nearly double the clamping force which increases the torque capacity. The Ironman kits also offer some slippage on takeoff, which champions these kits as "go-to" kits with their repeatability and endurance. The clutch engagement is aggressive with an on/off feel and the kits will not introduce clutch chatter, but will have light engagement noise and some gear rattle. Action Clutch Ironman sprung clutch kits go through multiple quality checks after assembly, ensuring quality. Select the kit designed for your vehicle. Pressure plate and clutch disc features: * All clutch covers feature ductile iron friction plate * Reinforced heavy-duty drive straps * 4-stage, heat-treated diaphragm spring * 100 percent dynamically spin balanced * American sintered iron friction material * American grade rivets
Not Yet Reviewed
$573.71
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$637.46
Quarter Master V-Drive clutches offer the best performance, durability, and value. Available with or without a button flywheel, these replacements feature an 8-leg open-cover design for strength and effective heat dissipation—perfect for Sportsman Circle Track, road course, and off-road racing. Quarter Master packs each clutch with premium internal friction material for reliable high-torque capacity, while the light weight of the clutch provides superior performance. Plus, the frictions and floaters are rebuildable. Dozens of models are available for countless year/make and engine applications. Get cleaner, cooler operation in the harshest race conditions with Quarter Master V-Drive clutches.
( 2 )
$742.37
These TCI Breakaway torque converters will give you about 1,000 more rpm stall speed than stock, so you'll launch and accelerate faster. TCI remanufactures them to last with furnace-brazed fins, needle bearings, and a flame-hardened hub--the same qualities that they gave their street/strip converter.
( 107 )
$548.95
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$580.95
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