Pontiac tempest 1968 Service Manual page 339

6B-32
1968 P O N T I A C SERVICE M A N U A L
S E R V I C E S P E C I F I C A T I O N S
CARBURETOR
M O D E L
APPLICATION
FLOAT
L E V E L
FLOAT
DROP
PUMP ROD
CHOKE
ROD
IDLE
VENT
VACUUM
BREAK
AIR
VALVE
LOCK-
OUT
DASH-
POT
UN-
LOADER
METERING
ROD
CHOKE
COIL
ROD
Refer
To
Rochester BV
Choke
7028168
250-AT 1-19/32" 1-3/4"
— ,
.080" .050" .160"
—
— ,
.230" Adjust­
ment.
Rochester MV
Refer
To
7028075 250-MT
5/16" —
—
.200" .040" .290"
— —
.245"
.085"
Choke
7028067 2 5 0 - M T - A / C
Adjust­
ment.
Rochester 2 G V
Refer
7028060 400-AT .150" To
7028062 350-AT
9/16" 1-3/4" 1-11/32" .085"
.150"
.180"
Choke
7028066 400-MT
9/16" 1-3/4" 1-11/32" .085"
.170"
.180"
Adjust­
7028071 350-MT
.160" ment.
Rochester 4 MV
7028260
250-AT 5/16" .085" .245"
7028261
250-MT 5/16"
.085" .245"
7028262 400-Pont-AT
.230"
7028263
400-428-MT
.245"
Secon­
7028264 400/400 HO F'Bird AT
.230"
dary
7028265
400-MT
.245"
dary
7028266
350-AT .230"
7028267
400 H O / 4 2 8 H O MT
.245"
7028268
400/400 HO AT
428/428 HO AT
1/4"
—
9/32" .100" 3/8" .230" .015" .030" .300" 53/64"
Center
Notch
7028269 350-MT
.245"
7028271
400 HO F'Bird-MT .245"
7028274 400-Ram Air-AT
.230"
7028275
400 Ram Air-MT
.245"
7028276 400 Ram Air F'Bird AT
.230"
7028277
400 Ram Air F'Bird MT
.245"
Fig. 6B-78 Service Specifications