AE86 4A-GE 20V Silver Top Engine Swap Guide
AE86 4A-GE 20V Silver Top Swap
Legal in 0
Toyota Corolla GT-S / Trueno / Levin
AE86 (N/A)
Power
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0-60
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Top Speed
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Current Market Value
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🇺🇸 US Import Information
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Shop Only
30-50 hours
4A-GE 20-Valve Silver Top Engine Swap (AE111 donor)
Toyota Corolla GT-S / Trueno / Levin (AE86)
Estimated Cost
$4,800-$8,000
Parts: $2,800-$4,500
Labor: $2,000-$3,500
Horsepower
+35 hp (160 hp vs stock 125 hp 4A-GE 16v)
Torque
+15 lb-ft
Response
Revs to 7,800 rpm (vs stock 7,500), snappy ITB response, distinctive sound
Prerequisites
- • Donor engine from AE111 Corolla Levin / Trueno
- • Complete harness and ECU from donor
- • Welding and fabrication skills or shop access
- • AE86 engine hoist access
Installation Progress0%
Installation Steps
1
Remove stock 4A-GE 16V engine and transmission
8 hours
Disconnect fuel, coolant, wiring, exhaust, driveshaft, transmission crossmember
2
Install adapter plate on chassis
2 hours
3
Mount 20V engine to AE86 chassis
2 hours
4
Mount T50 5-speed with adapter or keep AE86 trans
3 hours
5
Fabricate exhaust — 4-into-1 header
4 hours
6
Run fuel supply and return lines
2 hours
7
Connect AE86 cooling system to 20V engine
2 hours
8
Adapt wiring harness — 20V to AE86 chassis
8-10 hours
9
Mount 20V ECU in cabin
2 hours
10
Install AE111 throttle cable or convert to electronic throttle
2 hours
11
Fill fluids — coolant, oil, transmission
1 hour
12
First start and ECU self-learn
1 hour
13
Tune for best performance
4-6 hours (dyno)
Parts Required
All parts needed for this modification
4A-GE 20V Silver Top complete (or Blacktop)
Quantity: 1 • $1,800-$3,000
20V engine wiring harness
Quantity: 1 • $200
20V ECU
Quantity: 1 • $300
AE86 to 20V engine mount adapter
Quantity: 1 • $200
20V to AE86 bellhousing adapter
Quantity: 1 • $350
Custom fuel lines and return
Quantity: 1 • $150
Techno Toy Tuning AE86 conversion kit
Optional
Quantity: 1 • $450
Tools Required
Engine hoist
Rental: $50/day
Rental
Metric sockets
Common
Welding equipment
Rental: $80/day
Rental
Wiring crimping kit
Common
Supporting Modifications
Additional mods recommended or required for optimal performance
Upgraded radiator (Koyo)
recommended
Better cooling for ITB engine
LSD differential
recommended
Pairs with 20V rev-happy characteristic for drifting
Stage 1 cam upgrade (Toda, TRD)
optional
Unlocks additional 15-20 hp
Tuning Requirements
ECU Flash Required
Dyno Tune Required
Estimated Tuning Cost
$600-$1,200
Dyno tune recommended but not strictly required with factory ECU. Standalone ECU (MegaSquirt, Link) adds significant cost but enables further tuning.
Disclosure: We may earn a commission from purchases made through affiliate links on this page. This helps support our comprehensive modification guides. See our full disclosure policy.