Era Replica Automobiles 427 ROADSTER, Assembly And Service Manual

Page: 18 / 165

SECTION A -PARTS NEEDED-
18
FRONT ROTORS AND CALIPERS
WITH BOLT-ON WHEELS
Most mid-sized GM cars from 1970-1978 used the correct
pieces, with 2
3 /
8
" piston calipers. Station wagons may use
different parts . Chevrolet lists the same rotor and calipers
for all sedans.
Before purchasing the rotors and bearings, measure the size
of the outer wheel bearings. Your rotor and bearings must
be compatible with the smaller (more common) diameter
(.655) at the outer end. The wagons used a .750" diameter
spindle.
WITH PIN DRIVE WHEELS:
The E.R.A. pin-drive wheel conversion includes the hub and
rotor, both compatible with the caliper and bearings listed
above.
OPTIONAL COMPETITION BRAKES
E.R.A. offers a conversion to 12 1 /
8
" (by 1 1 /
4
" wide) rotors and
fixed 4 piston calipers for heavy duty street or track use.
These require modifications to the steering knuckle.
DRIVE SHAFT
E.R.A. has drive-shafts for most applications in stock.
This is a project for a shop specializing in power -
transmission equipment or shafting. See page 50 for design
details.
OIL COOLER SYSTEM
The optional E.R.A. oil cooler and adapter system comes
with or without a remote oil filter . Layouts for both
configurations begin on page 91.
The remote oil filter is a reproduction of the original race
option and mounts on the front of the block through an
intermediate steel bracket (available from ERA). See the
picture on page 92 for mounting on an FE engine.
If you decide to build your own system, the specifications
below may be helpful but should not substitute for good
design practices.

Oil cooler - approximately 13" x 4"h or 6"h with AN
10 male fittings. (The 6"h unit requires a special
aluminum housing (included with the ERA option).)

#10 stainless braided hose -

Oil cooler adapter or block-off plate- bolts to the
block or oil filter housing.
STEERING COLUMN (UPPER)
You may use a Triumph unit (see page 51) as described
below or the custom E.R.A. reproduction column . The
E.R.A. column includes the hub and requires no
preparation.
TRIUMPH COLUMN
The preferred parts are from a Spitfire or GT-6, vintage
1972 to mid 1977. Get the upper column and housing,
upper and lower clamps and both switches.
See page 51 for bushing remove and replacement,
preparation and rebuilding of the Triumph column.
STEERING WHEEL
The original Cobra used a 16" laminated wood rimmed
aluminum-framed steering wheel. We have found that a 15"
wheel allows more knuckle room between the wheel and the
cowl, while still offering reasonable steering effort.
E.R.A. offers both diameters in a reproduction of the
original wheel. A hub center button with either a AC or
Cobra logo is also available.
If you are using a Triumph column, you also need to adapt
the Triumph hub to the reproduction wheel.
SEAT BELTS
E.R.A. offers custom competition belts, identical to the
original cars. Inquire.
Standard seat belts can be installed in the threaded chassis
bosses.
Separate left and right straps are required for dual shoulder
harnesses. The length of an off-the-shelf shoulder harness
strap may need changing.