4l60E / 4L65/70 Stg. II Transmission Build-up

SKU: 4l60E-4L65-70-StgII-Transmission-Build-up

$2359.00 All ex.'97up Corvette
$2449.00 '97up Corvette

For vehicles up to 500 r.w.h.p. Complete tranny rebuild inculding the following Stage II Upgrades:

  • Transgo 4L60E-HD2 Shift Kit (including Century's internal modifications)
  • HP 3rd clutch piston Return Spring Kit
  • 13 vane pump kit, clearanced to spec.
  • Hardened Pump Support Rings & HP Pump Slide Spring
  • Corvette 2nd apply Servo
  • Alum. Accumulator Piston Kit (replaces plastic ones that tend to crack)
  • Century HP Wide Band (3/8" wider than OEM w/High Carbon Fiber linning & reinforced strut ends)
  • Reconditioned reverse input drum for maximum surface contact area of HP Wide Band
  • Billet Super 4th Servo (firmer 4th apply & longer band life)
  • Century HP 3-4 Clutch Kit: Special Alto Red Eagle® Racing frictions, Koleen steels, pressure plate & snap ring. Increases clutch count from factory weak 6 to awesome capacity holding 9! A must for any HD/Performance 4L60!
  • HP Beast sun shell
  • New 29 Element H.D. Input Sprag
  • 5 Pinion Rear Planetary Gear (25% stronger than 4 pinion gear) This is a NEW G.M. component which is more expensive than the inferior, unreliable foreign made units
  • 2-3 Check Valve Kit: improves timing between 2nd band servo release & 3rd gear apply
  • Sonnax® HP 2-3 Shift Valve Update: Keeps the overrun clutch on when the shifter is in D3, takes the load off the input sprag for increased life when racing or driving "spiritualy".
  • Reverse Capsule Update: decreases bleed oriface size in piston for better reverse engagement
  • All clearances & end-play set to our performance specs
  • New Delco Shift solonoids

All tranny builds also include all new gaskets, seals, rings, bushings, thrust washers, Borg&Warner low/rev sprag & Sealed Power filter. Borg&Warner HD frictions for reverse, over-run, forward clutch packs. All hard parts & electronic components are thoroughly cleaned & inspected. All units are meticulously checked during assembly. Turn-around time is 2-4 days after we receive your unit.



Hard parts & Electronic components additional cost if any needed.


Optional Upgrades:

  • Cyro-treated & shot-peened Output Shaft (rec. for heavy vehicles) add $159.95
  • Aluminum Deep Pan & Filter Kit add $179.95
  • OEM Steel Deep Pan & Filter add $74.95


  • Core Charge if we provide unit $480.00 (except C5 Vette $800.00) Includes all new Delco internal electronics
  • Delco TCC solenoid & harness assembly:
    • 93-95 (5 solenoid): $145.26
    • 94-96 (6 solenoid): $144.96
    • 96-02: $162.77
    • 03-up: $call
Price: $2,359.00