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The Edelbrock LS3 Swap Supercharger

By , Photography by , Grant Peterson,

PARTS LIST
Description PN Source Price
168-tooth flywheel 460535 McLeod 506.00
16-inch braided lines 139100-16 McLeod 69.00
4-inch flexboot 9775 Spectre 29.99
4-inch race filter 889612 Spectre 49.99
7-inch 22-degree elbow 97290 Spectre 49.99
-8 to ORB-08 fuel fitting 15118 Aeromotive 36.95
Air intake support bracket 9702 Spectre 29.99
AN -6/-8 fittings and hoses N/A Earls 150.00
Brake master cylinder MCPV1 CPP 95.00
E-Force Supercharger 1540 Edelbrock 6,895.87
Electric fans 75007-M Be Cool 292.75
Exhaust system Discontinued Edelbrock N/A
Fan belt K061031 Gates 28.66
Fan bracket 72049 Be Cool 161.95
Fuel pressure regulator 307030 FAST 122.95
Fuel pump 11101 Aeromotive 324.95
Front accessory drive kit 19155067 Chevrolet Performance 858.95
GM PS flow valve adapter CPFCV-K CPP 19.00
GM PS hose kit 605HK CPP 61.99
GM SFI bellhousing 8630 McLeod 518.00
Harmonic balancer 872032 TCI 195.00
Headers Discontinued Edelbrock N/A
Heat exchanger 15405/15406 Edelbrock Call
Hydraulic throwout bearing 1300-3 McLeod 383.99
Hydramax master cylinder and firewall mount CAGM-30002 American Powertrain 379.00
Intake bracket kit 9701 Spectre 14.99
Lower radiator hose 8631 NAPA 22.99
LS pilot bushing 8-1094-4 McLeod 46.99
LS series starter 351110 TCI 276.95
LS1 throttle cable TC-1000LS1 Lokar 50.95
LS3 crate engine 19211709 Chevrolet Performance 7461.99
Motor mounts Discontinued Edelbrock N/A
Oil filter 7060 NAPA 6.69
Oil pan swap pan 19212593 Summit 172.95
Optima battery 517974 Costco 151.44
Overflow catch can 70003 Be Cool 117.95
Upper radiator hose 23080 NAPA 15.28
Radiator 60188 Be Cool 709.95
Radiator cap 70001 Be Cool 45.95
RST Street Twin 6911-04 McLeod 900.00
Stainless steel fuel tank N/A Rock Valley 1,100.00
Water pump bracket N/A Ford Racing/Whipple Call

11. This is more of a swap issue you might have encountered already. The oil-pressure sender differs depending on the year of the engine. On the left is the one that came with our LS3; on the right is the one that is required for the Chevrolet Performance wiring harness. PN 12616646 cost us $100 at the dealer, but now we can monitor oil pressure using the factory bulkhead connector.

12. The LS3 runs without a vacuum reference to the fuel-pressure regulator. The E-Force required us to use it in order to boost-reference the fuel pressure.

13. The supercharger comes with its own manifold absolute pressure (MAP) sensor. Inside, there is a chamber with a vacuum on one side and a port to atmosphere on the other, separated by a membrane. As the throttle is opened and closed, the pressure reading against absolute zero at the MAP converts engine load into a electronic signal the computer can recognize.

14. Although the PN4061015 Gatorback belt is not supplied, the kit comes with the new pulleys and adaptors to make them work with the factory Y-body FEAD. Non-GM drives will require some engineering.

15. New Siemens 60 lb/hr pound injectors are provided with the kit, along with a new fuel rail. It is normally a dead-head system, but this one is returned at the pressure regulator on the firewall. The system will work both ways.

16. It is important not to ignore the positive crankcase ventilation (PCV) system. Edelbrock supplies the hose and fittings to connect the port behind the throttle-body to the passenger valve cover.

17. Fresh air is drawn through this port from the crankcase to the port on the throttle-body.

18. This is the passenger-side port. It attaches to a bung between the throttle-body and the mass airflow (MAF) sensor. If one or more of these ports are left open, there will be a vacuum leak and a lean condition.

19. The MAF sensor, a Chevrolet Performance part, comes with the wiring harness on the crate engine (4-inch cone filter not included).

20. Using parts from Spectre, we connected the throttle-body and MAF and tried to position the cone filter as far away from the engine and radiator heat sources as possible.

21. The system produces 5 to 6 pounds of boost, a little less than half of one atmosphere. This is safe for the 10.5:1 compression ratio of the factory LS3 crate engine. There is a lot more in this system if you are willing to play with the tune and octane.

SOURCES
Brewer Restoration & Performance
770-751-0687
http://www.musclerods.com
Street And Performance
Mena
AZ
479-394-5711
http://www.hotrodlane.cc
Comp Cams
3406 Democrat Road
Memphis
TN  38118
800-999-0853
http://www.compcams.com
McLeod Racing
1600 Sierra Madre Circle
Placentia
CA  92870
714-630-2764
http://www.mcleodracing.com/
Optima Batteries
5757 N. Green Bay Ave.
Milwaukee
WI  53209
888-867-8462
http://www.optimabatteries.com
MSD Ignition
915-857-5200
http://www.msdignition.com
Rock Valley Antique Auto Parts
Route 72 & Rothwell Rd
Box 352
Stillman Valley
IL  61084
815-645-2271
http://www.rockvalleyantiqueauto
parts.com/
Moser Engineering
102 Performance Drive
Portland
IN  47371
260-726-6689
http://www.moserengineering.com
Aeromotive
7805 Barton Street
Lenexa
KS  66214
913-647-7300
http://www.aeromotiveinc.com
Keisler Engineering
2250 Stock Creek Blvd.
Rockford
TN  37853
888-609-0053
www.keislerauto.com
Spectre Performance
1720 South Carlos Avenue
Ontario
CA  90761
909-673-9800
www.spectreperformance.com
Holley Performance Products
1801 Russellville Rd.
Bowling Green
KY  42101
270-782-2900
http://www.holley.com
Miloden Inc
20716 Plummer Street
Chattsworth
CA  91311
818-407-1211
http://www.Miloden.com
Chevrolet Performance
800-450-4150
http://www.chevroletperformance.
com
Speartech Fuel Injection Systems
N/A
www.speartech.com
American Powertrain
931-646-4836
http://www.americanpowertrain.co
m
Be Cool
310 Woodside Avenue
Essexville
MI  48732
800-691-2667
http://www.becool.com
Edelbrock
2700 California St
Torrance
CA  90503
310-781-2222
http://www.edelbrock.com
Lokar Performance Products
10924 Murdock Drive
Knoxville
TN  37932
865-966-2269
http://www.lokar.com
Vintage Wheel Works
16450 Phoebe Ave
La Mirada
CA  90638
714-690-4700
http://www.vintagewheelworks.com
Global West Suspension
655 S. Lincoln Ave.
San Bernardino
CA  92408
877-470-2975
909-890-0759
http://www.globalwest.net
Classic Performance Parts
714-822-2000
800-522-5004
http://www.classicperf.com
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