Pre-Installation Cleaning / Detailing...
Rigging Engine/Trans For Installation...
Dropping the Engine / Transmission into Position...
...Transmission Crossmember Installation...
T-350/Powerglide/T-5 Crossmember Install...
2004R/700R4/4L60E/T-56 Truss Style Transmission Crossmember Installation...
...Checking Drivetrain Alignment / Clearances...
Be sure to double check clearances at the...
...Connecting The Back-up Lite Switch...
2....Considerations & Requirements....
4....Engine / Transmission Installation....
5....Exhaust / Throttle Cable / Accessory Drive / Pulleys....
6....Cooling / Fuel Systems....
7....RX-7 Wiring Harness Connector ID and Circuit Locations....
8....Electrical System Modifications By Circuit....
...This is probably your last chance to easily detail those places remote and
inaccessible, so take a quick look around before it’s too late.
...For installation, the engine/trans should be rigged so that they naturally hang
level, or slightly tail down.
...Carefully lower the engine and transmission assembly into place. The engine brackets will slip onto the same place where the rotary engine was removed.
...After the engine/trans are in their approximate position, support the transmission,
with a floor jack or jackstand, with the output shaft centerline about 6-1/4” below the top
of the transmission tunnel.
...Remove the engine hoist and chains.
...Torque the (6) rubber mount/block bolts to 30 ft/lbs.
...14mm wrench
...14mm socket, rachet, and 6" extension
...3/8" allen socket
...9/16" wrench
...9/16" socket and torque wrench
...this crossmember bolts directly to the existing RX-7 transmission crossmember holes,
using the original bolts.
...Remove the shield that covers the fuel lines on the left side/bottom of the
floor pan, where they pass by the rear of the transmission.
...Install and loosely bolt the rubber transmission mount pad onto the transmission.
...Loosely bolt the crossmember onto the rubber trans mount pad.
...Tighten all the installed trans mount and crossmember bolts. Properly positioned, the
crossmember spans the distance between the frame rails, leaving enough room for the fuel and
brake lines. Re-locating the fuel and brake lines is not required.
...Using a 3/8” drill bit, drill holes in the floor pan thru the (6) holes in the ends of
the trans crossmember (2 holes on each end).
...Install the supplied bolt plates from the top side of the floor pan, thru the new
drilled holes.
...From the bottom side of the floor pan, bolt the trans crossmember onto the bolt
plate studs, using the washers and nuts supplied. Tighten the bolts.
...Remove the floor jack (or jack stand) from under the transmission. The
engine/trans should now be resting on it’s own mounts, and supported by the chassis.
...Install sway bar spacers if required and re-attach sway bar.
...The properly installed Chevy engine is centered in the car. The RX-7’s rear
differential’s pinion flange is offset 3/4” to the right of center. This is normal. The
engine/trans and the rear diff’s pinion centerline should be parallel, but NOT concentric.
If the centerlines were concentric (exactly lined up with each other), the u-joints would
fail prematurely as they need at least slight internal movement to lube properly.
...The assembled driveline & slip yoke can be installed. The (4) pinion flange bolts should be
torqued to 27 ft/lb. At least 3/8” of clearance should exist between all parts of the
driveline / torque arm / transmission tunnel.
....Steering rack / oil pan
....Distibutor cap / firewall
....Harmonic balancer/ sway bar
....Hood / carburetor top etc.
...to operate the RX-7's back-up lites, Mazda used a transmission mounted SPST switch to complete the circuit.
When the RX-7's engine harness is removed with the rotary engine, part of this circuit is removed as well.
To restore this circuit, a harness extension will need to be added at connector X-04,
a rectangular 6 pole connector (2 rows of 3) located under the hood on the driver's side of the brake master cylinder.
2 of the wires in this connector are for the back-up lite switch. These wires wires are...
...black wire w/ yellow stripe- comes from 7.5a fuse in underdash fusebox.
...red wire w/ green stripe- goes to back-up lites.
Connecting these two wires together w/ a jumper wire will turn on the RX-7's back-up lites when the ignition switch is in the "ignition" and "start" positions.
Routing and connecting these two wires to your new transmission's back-up lite switch will enable the RX-7 back-up lites when "reverse" position of the shifter is selected.