Swapping a 4L80E into a truck or LS swap that came with a 4L60E is one of the most common (and worth-it) HD upgrades. Here is the complete parts list and cost.
Shop the parts for this fix
Doing the whole job? 4L60E Master Rebuild Kit - Frictions & Steels, Gaskets & Seals, Filter, Shift Kit, Servo, Solenoids, Bushings (7-Piece) — $233.99 $245.99 (save 5% vs buying separately)
Or grab the individual parts:
Why swap to 4L80E
Strength:
- 4L60E rating: ~360 ft-lb
- 4L80E rating: ~440 ft-lb
- 4L80E with HD parts: 800+ ft-lb
Reliability:
- 4L80E built for HD trucks (Suburban, 2500/3500)
- Bigger pump, bigger clutches
- Cast iron tail housing
Better for:
- LS swaps with HP
- Tow rigs
- Drag race trucks
- Tuned trucks
What is the same
- Bell housing pattern (SBC/BBC pattern — same as 4L60E)
- Bolt-up to LS engines (with adapter sometimes)
- PCM compatibility (most years)
What is different
Size:
- 4L80E is 2-3 inches longer than 4L60E
- Different driveshaft length needed
Mount:
- Different trans crossmember mount location
- Sometimes crossmember mod required
Pan:
- 4L80E has 17-bolt pan
- 4L60E has 16-bolt
- Different filter
Output spline:
- 4L60E: 27 spline
- 4L80E: 32 spline
- New yoke needed
Output sensor:
- 4L80E uses VSS sensor location
- Different sensor
Required parts for the swap
The trans itself:
- 4L80E used: $600-$1,200
- Rebuilt: $1,800-$3,000
- HD built: $3,000-$5,000
Driveshaft modification:
- Shorten or new driveshaft
- $200-$500
- Different slip yoke (32 spline)
Trans crossmember:
Trans cooler lines:
- Different fittings than 4L60E
- $50-$150
Torque converter:
- 4L80E converter (or HD)
- $200-$1,400 depending on quality
Wiring:
- 13-pin to 4-pin trans connector swap
- Some PCMs need reflash or adapter
- $100-$400
Yoke:
- 32-spline slip yoke
- $50-$150
Total cost estimates
Budget swap (used trans, basic parts):
- Used 4L80E: $700
- Converter: $300
- Driveshaft + yoke: $300
- Crossmember + lines: $200
- Wiring: $200
- Fluid (12 qts Dexron VI): $110
- Total parts: $1,810
Quality swap (rebuilt trans):
- Rebuilt 4L80E: $2,500
- HD converter: $700
- Driveshaft + yoke: $300
- Crossmember + lines: $200
- Wiring: $200
- Fluid: $110
- Total parts: $4,010
HD performance swap:
- HD-built 4L80E (Beast, billet input): $4,000
- HD triple-disc converter: $1,200
- Driveshaft + yoke: $300
- Crossmember + lines: $300
- Wiring: $300
- Fluid: $110
- Total parts: $6,210
Plus labor:
- DIY: free (but 12-20 hours of work)
- Shop: $1,500-$2,500
- Grand total budget swap: $3,300-$4,300
- Grand total HD swap: $7,700-$8,700
Common mistakes
- Not getting a 4L80E PCM reflash (causes harsh shifts)
- Reusing 4L60E driveshaft (wrong spline)
- Not upgrading cooler lines (too small)
- Skipping trans crossmember mod (wrong location)
What it gets you
- 2x torque capacity
- 3-4x service life under HD load
- Easier rebuild parts availability
- Better resale value if you ever sell
Need 4L80E swap parts, HD upgrades, or rebuild kits? Shop our 4L80E catalog. Used trans, rebuild kits, HD converters, swap-specific parts. Free shipping over $70.
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