4L60E 4L65E 4L70 4L70-E SONNAX HP-4L60E-01 PERFORMANCE PACK 1994-ON.

THIS KIT WILL FIT THESE AUTOMATIC TRANSMISSIONS;

GMC CHEVY BUICK CADILLAC PONTIAC OLDSMOBILE

4L60E 1994-ON
4L65E 2001-ON
4L70/E

SONNAX Part No.
HP-4L60E-01



PUMP PARTS INCLUDE:
Boost Valve with O-Ring, .490”
Elevated Pressure Regulator Spring
High RPM Pump Slide Spring
1 Spacer

SERVO PARTS INCLUDE:
4th Servo Return Spring
Servo Cushion Spring
Servo Piston D-Ring Kit

CASE PARTS INCLUDE:
3-4 Accumulator Piston Kit
3-4 Accumulator Spring
Servo Release Check Valve

VALVE BODY PARTS INCLUDE:
Forward Accumulator Kit
Accumulator Valve Shim
Twist Drills

ACCUMULATOR PARTS INCLUDE:
1-2 Pinless Accumulator Piston Kit
1-2 Accumulator Inner Spring
1-2 Accumulator Outer Spring
1-2 Accumulator Waved Spring
Accumulator Housing Spacer

THIS PERFORMANCE PACK PROVIDES:
• Shorter shifts.
• Faster line pressure increase and higher overall line pressure
for greater clutch/band holding power.
• Ultra-reliable Sonnax pinless accumulator pistons in 1-2, 3-4
and FWD locations.
• Reduction in high RPM pressure drop-off.
• Unique 1-2 accumulator spring combination for shifts
“with character.”
• Patented 3rd accumulator orifice check valve that gets the
2-3 right the first time, every time.
• Consistent results on every job, with no guessing
on calibration.
• Solution to common wear of accumulators and separator
plate seen in hard-working units.

PLEASE MAKE SURE OF YOUR YEAR BEFORE ORDERING, ANY QUESTIONS PLEASE CALL 1-888-8CT-POWR (1-888-828-7697)

Performance Pack

Part No.

HP-4L60E-01

Boost Valve with O-Ring .490"
Elevated Pressure Regulator Spring
High RPM Pump Slide Spring
Spacer
4th Servo Return Spring
Servo Cushion Spring
Servo Piston D-Ring Kit
3-4 Accumulator Piston Kit
3-4 Accumulator Spring
Servo Release Check Valve
Forward Accumulator Kit
Accumulator Valve Shim
TCC Valve
TCC Spring
Checkballs (8)
Separator Plate Plugs Not Shown
Twist Drills Not Shown
1-2 Pinless Accumulator Piston Kit
1-2 Accumulator Inner Spring
1-2 Accumulator Outer Spring
1-2 Accumulator Waved Spring

1994-later

Sonnax Performance Pack HP-4L60E-01 combines innovative heavy duty/performance calibration for firmer shifts under load without sacrificing low-speed drivability. The precision components in this kit upgrade the 4L60-E for maximum performance and durability by recalibrating pressures, recalibrating shift accumulation and including improved parts for areas that commonly wear. This kit is suitable for any heavy duty application and is a critical foundation for other upgrades when modifying the 4L60-E for high performance use.

Shorter shifts which get progressively firmer with load
Faster pressure increase and higher overall pressure for greater clutch/band holding power
Three ultra-reliable, patented, billet pinless accumulator pistons
Unique 1-2 accumulator spring combination for shifts with character
Improved high RPM pressure
Third accumulator valve gets the 2-3 right the first time, every time
Consistent results, no guessing on calibration
Prevents worn accumulators and separator plate
Optional TCC on-off conversion prevents excess TCC pressure

NOTE:

For more radical applications and even greater levels of performance, combine the Performance Pack with the Sonnax 1-2 and 4th Super Hold Servos.

Order Part Number K77911-03K (ebay # 350541961889) and we can combine shipping if you purchase using ebay Cart and make one combined payment.

THESE ARE THE KITS THE PROFESSIONALS USE. DON'T SETTLE FOR LESS.

PLEASE NOTE: TRANSMISSION REMOVAL IS NOT REQUIRED TO COMPLETELY INSTALL THIS ITEM BUT PAN, SERVO, VALVE BODY ARE.
PROFESSIONAL INSTALL RECOMMEND.

PLEASE MAKE SURE OF YOUR TRANSMISSION PRIOR TO ORDERING YOUR ITEM.

CT POWERTRAIN PRODUCTS PART NUMBER: HP-4L60E-01

Store Policies Payment terms: All credit card purchases either called in or done online will have to clear before we will ship product. PayPal payments made with instant transfer with either PayPal funds or a credit card linked though PayPal will ship the same or next Business day. PayPal payments made with the PayPal E-Check feature will ship only once PayPal clears payment.

Return policy details: Item(s) must be returned within: 30 DAYS Refund will be given as: Money Back to funding source or if paid by check or cash, refund will be a Company Check mailed to customer after processing of refund takes place. ALL RETURNS MUST BE MADE WITHIN 30 DAYS AND MUST BE RETURNED TO US IN RE-SELL ABLE CONDITION AND THE ORIGINAL PACKAGING MUST BE UNOPENED. ALL RETURNS MUST HAVE A COPY OR ORIGINAL OF OUR STORE INVOICE THAT CAME WITH SHIPMENT OF PRODUCT. WE DO NOT REFUND SHIPPING CHARGES TO OR FROM SELLER.

International Ordering Guidelines: International Taxes and Tariffs: Our prices do not include taxes and tariffs. Customers outside of the United States may be required to pay these fees to the courier, as applicable, upon delivery. For example, Canadian customers will be assessed the 7% GST (Goods and Services Tax) or the appropriate HST (Harmonized Sales Tax) or PST (Provincial Sales Tax) when the order arrives. Please consult your local customs office or tax authority for information specific to your situation. Duties and Taxes: Duties and taxes are the responsibility of the person receiving the shipment and will be due at the time of delivery. Please take this into consideration when ordering, as the amount will vary by country and CT POWERTRAIN PRODUCTS does not have access to these amounts. * Our prices do not include taxes, tariffs or additional fees assessed by your customs broker. We cannot mark an item as "gift" or "return" to avoid customs fees. This is illegal in the USA and a Federal offense and we do not break this Policy/Law, EVER. If you are outside the U.S. and you would like a shipping quote, E-mail your physical address and we will provide a quote within 24 hours (M-F).
Liability Waiver: WE WILL NOT REFUND OR PAY SHIPPING CHARGES ON RETURNS. WE WILL NOT BE HELD LIABLE FOR LABOR, RENTAL CAR OR INJURY. ALL CONTENT, NAMES, IMAGES, PICTURES ARE PROPERTY OF CT POWERTRAIN PRODUCTS AND CANNOT BE USED WITHOUT OUR CONSENT IN WRITING.