updated: 3/25/06
LT1 into a V6 F-body '93 - '97 Parts needed:
LT1 and V8 Transmission (none of the F-body
V6 Transmissions will work behind the V8)
V8 Front
Suspension Crossmember
(Each engine had different motor mount holes)
Engine
compartment wiring harness
(different from the engine wiring harness)
Dual fan
setup '93-'95
V8 Exhaust
System
V8 Heater
Hoses
V8 Fuel
Lines (LT1)
1 piece
driveshaft
Aluminum
driveshaft
V8
Gauges
Recommended:
Limited Slip Differential with disc brakes
LS1 into a F-body '93 - '02 Parts needed:
LS1 and V8 Transmission (none of the F-body
V6 Transmissions will work behind the V8)
V8 Front
Suspension Crossmember
(Each engine had different motor mount holes)
V8 Heater
Hoses
Will need '97 Corvette
fuel rails or rails modified by Street and Performance
to hook up the stock lines or an external pressure regulator.
Due to electronics
changes from year to year and difference in V6 & V8 cars,
it is impossible list all the different changes and mods
that would be required
to be made to install the LS1 in a V6 or LT1 car.
Mileage on
a fuel injected engine is not the factor that it is on carbureted
engines. The late model
fuel injected engine is good for over 200,000 miles
because the fuel/air ratio is so precisely metered that the oil is not washed
off
the cylinder
walls during high load/low rpm and cold operations. Therefore,
the cylinder walls just dont wear out like they did with carburetion. This
point
is brought home with the
LS1 which has a maximum allowable cylinder
overbore of only .010 for '98 and 0.030 for '99-'02 and
with the Cadillac Northstar which has no oversized
pistons available for it.
LT1
Accessory mounting brackets are different from
early small blocks.
None of the earlier brackets will fit the LT1.
Corvette LT1s have the A/C compressor mounted high on the
engines left
side. Picture
F-Body LT1s have the A/C compressor mounted low on the
engine's right side.
Requires high pressure fuel pump, 42 PSI, and return fuel line.
Computer must be reprogrammed to eliminate VATS feature or a
VATS module with proper resistor must be added to the '93 - '95 LT1
and a VATS simulator must be added to the '96 - '97 LT1.
Can use 700R4, 4L60E, BWT5 and BWT56 transmissions.
For details on swapping an LT1 into a '82 - '92 F-body click here
LS1
Requires high pressure fuel pump, 58
PSI, and return fuel line.
'97 - '98 Corvette LS1 has a pressure regulator and return line as
part of the fuel rail while the Camaro LS1 has the pressure regulator
in the tank and only the high pressure line going
into the fuel rail.
The Camaro LS1 can be
modified by using the '97 - '98 Corvette
fuel rail and pressure regulator or by adding an aftermarket inline
pressure regulator. A VSS is required for the engine to work properly.
A VATS
simulator must be added for the
computer to work.
The LS1 4L60E, BWT56 and the '99 and newer truck Vortec
V8 transmissions
will work
best with the LS1 engine, special flywheels are available
from GM to mate earlier
transmissions.
The
Corvette oil pan has side extensions which could pose a problem in an
engine swap. Corvette / F-body Oil Pan
GM
makes a special flywheel and spacer for the use of earlier automatic
transmissions and many
unique parts for swapping the LS1 into earlier cars.
Flywheel for earlier
automatic PN.
12551367
required
spacer
PN. 12563532
longer bolts
PN. 12563533
Flywheel for earlier
manual
PN. 12561680
Transmission Fittings
for inverted
flare cooler
lines.
PN. 8637742
EGR blockoff
plug for manifold PN.
12558346
90 degree inlet
duct
PN. 25147210
Truck Oil
Pan
PN. 12558268
Oil
Pickup
PN. 12563961
3 wire water temp
sensor
PN. 12551708
(3rd wire for GM gauges)
LS1 installation
guide
PN. 88959384
LS1 header
flanges
PN. 12480130
For more information see the specifications page
For details on swapping an LS1 into
a G-body click
here
L98
Tuned port injection
Mass Air Flow System used from '85 - '89
Speed Density System used from '90 - '92
The angle of the two center intake manifold bolts on each side was
changed in the '87 and later manifolds. '85 and '86 manifolds can be
used with the later heads and the
'87 - '92 manifolds can be used on
the earlier heads by elongating the center manifold bolt holes.
After multiple failures of Frame Rail mounted fuel pumps,
I prefer to use in tank
pumps. My pump of choice is the
Corvette pump (part# 25116164 and
strainer # 25055455).
Shop Manual
A factory shop manual for the engine you are installing should be
considered a necessity. If
you are installing a '97 Camaro engine but want to
use
a '95 OBD1 computer, buy a '95 Camaro shop manual. If you are installing the
same '97 engine in a street rod
and want to use the '93 computer for the speed
density system, buy a '93 Camaro shop manual. Genuine GM service manuals
are available from Helm at
1-800-782-4356 or online at
http://www.helminc.com.
BWT56 Trans Swap
'93 - '97 T56 Will bolt up to any smallblock or bigblock Chevy '97
and earlier
The flywheel fits only the one piece rear seal crankshaft
Centerforce
makes a flywheel for the T56 that bolts to
the two piece rear seal crankshaft.
Use of the small starter is required due to bellhousing
shape
Factory wire hookups include backup lights, VSS, CAGS and
reverse lockout (none are required for proper operation of the trans)
4L60E Swap
Installing a 4L60E in your Project car is simple if your car has
computer controlled fuel injection but can get complicated if you
are running a
carburetor. The 4L60E requires a computer that can
control the shift points, throttle position sensor, tach
signal, coolant
temperature sensor, VSS, and wiring harness, most of which is already
there in a fuel injected car but will have to be added to a
carbureted car.
Overdrive transmissions have
provided the most significant gains in fuel
economy. Fuel injection gives
good driveabilty but it is the overdrive that takes
advantage of the fuel injections
ability to provide the proper air/fuel ratio at low
engine speeds and it is
therefore the overdrive that is most responsible for the
Electronic Cruise Control Picture
The F-body cruise control unit has a long 68" throttle cable that gives
good flexibility
in finding a mounting place in even the most crowded engine compartments.
The F-body cruise control gets its input from the engine computer so it can
be easily added to an LT1 or LS1 powered project car.
Driveshaft
3rd generation F-body V8 automatic
driveshaft is a direct replacement
for the 4th Gen V6 2 piece driveshaft.
Rear Axle
93 & Newer will bolt into an '82 - '92 F-body but is
3" wider requiring wheels with more backspacing