11
901196 REV B 07/08/14, INST 1970-78 CAMARO wo AC EVAP KIT PG 11 OF 29
Engine
Compartment
Side of Firewall
(4) 1/4-20 X 1”
Hex Bolts
w/ Washers
NOTE: Firewall cover mounting holes
must be enlarged. Enlarge (5) existing
holes in firewall to 5/16”.
View Shown
From Inside Car
Through Dash
Figure 9
Back Side
of Firewall
Cover
Silicone
1/4” Nut
w/ Star Washer
1/4 X 3/4
Flat Washer
Evaporator Bracket and
A/C & Heater Hose Installation
1.
On a work bench, install evaporator rear bracket and A/C & heater hose with properly lubricated O-rings
(See Figure 11, Page 12, and Figures 15, Page 15).
2.
Install front mounting bracket on evaporator using (2) 1/4-20 x 1/2” hex bolts and tighten as shown in
Figure 10, below.
Firewall Cover Installation
1.
Enlarge (5) OEM firewall holes to 5/16” (See Figure 9, below).
2.
Apply a 1/4” bead of silicone around the back side of the firewall cover as shown in Figure 9, below.
3.
From inside the car, install firewall cover on firewall (See Figure 9, below). From the engine compartment,
secure firewall cover to firewall using (4) 1/4-20 x 1”, hex bolts, (5) flat washers and 1/4” nuts w/ star
washers (See Figure 9, below).
(2) 1/4-20 X 1/2”
Hex Bolt
Figure 10
Firewall Cover
648233
