Product Description
New 700 7R4 700R4 4L60 4L60E 4L65E 4L70E Sonnax Complete Servo Upgrade Combo Kit.
Second Gear "Super Hold Servo" 77911-03K
"Super-Hold" 4th. 77767K
This Listing Is For (1) One New Combo Sonnax Servo Kit With A "Super-Hold" 2nd Gear Servo Piston & Pin Kit 77911-03K And With The "Super-Hold" 4th. Cover Kit 77767K.
This Piston Kit Will Fit These Automatic Transmissions;
GMC CHEVY CADILLAC OLDSMOBILE PONTIAC
700R4 - 700 - 7R4 1982-On
4L60 1987 THRU 1993
4L60E 1993-ON
4L65E 2001-ON
4L70E
This Listing Is For (1) One Combo Servo Piston Kit That Comes With These Items;
(1) NEW SONNAX "SUPER-HOLD" 77911-03K PISTON KIT
2ND. GEAR PISTON SERVO ASSEMBLY
NEW SONNAX SUPER HEAVY DUTY BAND APPLY PIN WITH TEFLON SEALS AND RUBBER O'RINGS
ALL NEW SEALS AND RINGS NEED TO INSTALL THIS SERVO KIT.
COMPLETE EASY TO FOLLOW INSTRUCTIONS.
(1) NEW SONNAX "SUPER-HOLD" 77767K 4TH. GEAR SERVO KIT
4TH GEAR HOLD COVER ASSEMBLY
STEEL WASHER
ALL NEW SEALS AND RINGS NEED TO INSTALL THIS SERVO KIT.
COMPLETE EASY TO FOLLOW INSTRUCTIONS.
This Piston Kit Is A Great Update To Every Transmission Either When Rebuilding Or Just Refreshing It Up.
This Kit Will Offer These Benefits When Properly Installed;
18% more apply area than OEM Corvette servo
Dual seals on 2nd apply piston and separator
Servo piston and separator are made from 6061- T6 aluminum
O-ring seal between pin and 2nd gear piston
Two Teflon® rings seal pin to bore
Servo pin is made from Chrome-moly steel
Kit includes all necessary seals
40% More surface area for greater holding power
Easy to install - transmission removal is not required
D-ring seals for improved sealing
Billet aluminum cover
SONNAX PART SUMMARY
The Sonnax 4L60/4L60-E 2nd Gear “Super Hold” Servo has 18% more apply area than the “Corvette” servo (largest OEM) and maximizes holding power in 2nd gear with more positive 1-2 and 2-3 shifts. Dual seals on the 2nd gear piston and separator ensure positive band apply/release and eliminate cross leaks, which contribute to 2-4 band and 3-4 clutch failure. This servo is the perfect option when more holding power is desired without causing excessively harsh upshifts and downshifts. The included apply pin is longer than the longest OE pin, and has added seals to reduce leakage of 3rd and 4th gear oil pressure. For the ultimate servo combination in your 4L60/4L60-E, Sonnax recommends using the 77767K 4th Gear “Super Hold” Servo with the 77911-03K 2nd Gear “Super Hold” servo.
