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View Full Version : LSX Swap 3rd Gen


89vert
02-01-2006, 11:15 PM
Benifits:
300+ rear wheel hp stock
completely new design using modern technology
about 150 #'s lighter then an L98
better fuel economy
lower emmisions- leaves room for mods and still pass aircare
huge aftermarket for these motors
SFI(Sequential Fuel injection)
DIS(Distributorless Ignition System)
1 coil per cylinder
T56 6 speed Trans or a 4L60E 4 speed auto


LS1 5.7L V8:
Aluminum 6 Bolt Main Block
Nodular Iron Crankshaft
5.098" Powdered Metal Connecting Rod
Flat Top, Lightweight pistons
3/8" single roller timing chain
Hydraulic Roller camshaft
Symmetrical Port Heads with 2.00/1.55 valves
1.7 roller rockers
Composite Intake
Cast Aluminum Oil Pan

Bore/Stroke 3.98/3.62
Compression Ratio 10.25:1

Advertised power
320hp@5800rpm
330 Lb-Ft@4400rpm

Other Gen III
LR4 4.8L
255hp @ 5200rpm/285Lb-Ft @ 4000rpm
270hp @ 5200rpm/285Lb-Ft @ 4000rpm
285hp @ 5200rpm/298Lb-Ft @ 4000rpm

LM7, 5.3L
265hp @ 5200rpm/320Lb-Ft @ 4000rpm
285hp @ 5200rpm/325Lb-Ft @ 4000rpm
295hp @ 5200rpm/330Lb-Ft @ 4000rpm

LS6, 5.7L
385hp @ 6000rpm/385Lb-Ft @ 4800rpm
400hp @ 6000rpm/400Lb-Ft @ 4800rpm

LQ4, 6.0L
300hp @ 4800rpm/360Lb-Ft @ 4000rpm
325hp @ 4800rpm/360Lb-Ft @ 4000rpm

LQ9, 6.0L
345hp @ 5200rpm/380Lb-Ft @ 4000rpm

LS2, 6.0L
400hp @ 5200rpm/400Lb-Ft @ 4000rpm





locked, mods please don't post work in progress

89vert
02-06-2006, 11:20 PM
What you need:

Minimum:
LS1 Motor Mounts
-to mount the Gen III

LS1 Trans Crossmember
-to mount the tail shaft of the trans, sits farther back then a T5 or 700r4

LS1 Conversion harness
-to make the LS1 ECM/Motor work properly in a 3rd gen

Adjustible Fuel Pressure Regulator (Aeroquip 13109 Fuel Regulator is recommended)
-the LS1 uses static line pressure, no return off the fuel rail, you need to regulate the fuel pressure prior to it entering the fuel rail

VATS Module
-to eliminate the VATS system on the LS1(I'm going to look into if there is a way to intergrate the stock 3rd gen VATS into the LS1 swap,

Tach Signal Interface
-to get the stock 3rd gen tach to work with the LS1 tach output signal

Electronic to Mechanical Speedometer Box
-is needed for the stock speedo to work on 89 and prior Camaros and 86 and prior T/As

High output Fuel Pump(recommended on tpi)
-the LS1 runs at a higher fuel pressure then TPI, its recommended that the feul pump be replaced with a higher output unit to prevent over working the stock pump and possibly starving the motor of fuel, TBI you must upgrade the pump

Custom Y-pipe
-will be need to connect the LS1 manifold to the factory 3rd gen exhaust

LS1 ECM
-no 3rd gen ECM can be made to run an LS1,

LS1 (complete with accesories)
-no engine parts are compatible between stock 3rd gen motors and LS1's, the 3rd gen A/C compressor can be used if conversion brackets are purchaced