Forum > Chevy - GMC Chassis
Chevy P30 454 (7.4L) Fan Belts And Hoses
DaveVA78Chieftain:
Fan Belts
Power Steering Pump Mounting on P30 454
A - Insert 1/2" breaker bar (or 1/2" rachet) in square slot to apply pressure to tighten PS belt. The adjustment bolt is hidden behind the PS Pulley and fan blade in this picture.
B - AC Compressor adjustment bolt
C. AIR pump adjustment bolt
D. Alternator adjustment bolt
Note: Many P30 chassis' use a Hydroboost braking system. The Hydroboost unit uses the PS pump as a pressure source therfore, loss of the PS belt will affect both steering and brakes.
Crank, Water Pump, Alternator Belt
Year Description Part Number Belt Tension 1979 - 1985 GM: 9433752
NAPA: 15495 or 257495
Autozone: 15495 (Duralast)
Used: 75 +/- 5lbs
New: 125 +/- 5lbs1990 Serpentine
52.75 inches
(1340 mm) GM: 10085787
NAPA: 6K525 or 25060525HD
Autozone: 525K6 (Duralast)
Used: 75 +/- 5lbs
New: 125 +/- 5lbs
Crank, Water Pump, Alternator, Air Pump Belt
Year Description Part Number Belt Tension 1985 1/2 - 1989 Poly V, 6 Rib
55.98 inches
(1422.0 mm) GM: 14087540
NAPA: 6K560 or 25060560 or
25060560HD
Autozone: 560K6 or 5060560
or 560K6 Used: 75 +/- 5lbs
New: 125 +/- 5lbs
Crank to Power Steering Pump Belt
Year Description Part Number Belt Tension 1979 - 1985 Without A/C GM: 9433745
NAPA: 15460 or 257460
Autozone: 15460 (Duralast)
Used: 75 +/- 5lbs
New: 125 +/- 5lbs
1985 1/2 - 1990 Without A/C
.47 inch x
45.5 inches GM: 10034695
NAPA: 15455 or 257455
Autozone: 15455
Used: 75 +/- 5lbs
New: 125 +/- 5lbs1985 1/2 - 1990 With A/C,
Hi Ride
3/8 inch x
41 inches
GM Code: XL GM: 9433735
NAPA: 15410 or 257410
Autozone: 15410 (Duralast) Used: 75 +/- 5lbs
New: 125 +/- 5lbs
Crank, Power Steering Pump, A/C Compressor, Water Pump Belt
Year Description Part Number Belt Tension 1985 1/2 - 1990 Hi Ride
3/8 inch x
60.5 inches
GM Code: GA
GM: 14033869
NAPA: 15603 or 257603
Autozone: 15603 (Duralast) Used: 90 +/- 5lbs
New: 135 +/- 5lbs
Power Steering Pump to 2nd AIR Pump Belt (NA5 Code chassis only)
Year Description Part Number Belt Tension 1985 1/2 - 1990 With and
Without A/C
All Federal,
Hi Ride
.47 inch x
45.00 inches
GM Code: CNA GM: 10034695
NAPA: 15455 or 257455
Autozone: 15455 (Duralast) Used: 75 +/- 5lbs
New: 125 +/- 5lbs
Hoses
Upper Radiator Hose
Year Description Part Number 1973 - 1981 Vertical Radiator
350 Engine GM: 6259952
NAPA: 7575
Autozone: E70935 (Dayco)
1973 - 1981 Vertical Radiator
454 Engine GM: 6259953
NAPA: 7537
Autozone: B70846 (Dayco)
1982 Horizontal Radiator
454 Engine
(Varies by Model &
option) GM: 14049401
NAPA: 8153
Autozone: B70846 (Dayco)
GM: 15599363
NAPA: 8232
Autozone: E71429 (Dayco)
1983 Horizontal Radiator
454 Engine GM: 15595586
NAPA: 7537
Autozone: B70846 (Dayco)
1984 (H4D) Horizontal Radiator
454 Engine GM: 14049401
NAPA: 8153
Autozone: B70846 (Dayco)
1985 - 1989 (H5D) Horizontal Radiator
454 Engine GM: 15599363
NAPA: 8232
Autozone: E71429 (Dayco)
1990 - 1994 (H5D) Horizontal Radiator
454 Engine GM: 15638164
NAPA: 8153
Autozone: B70846 (Dayco)
Lower Radiator Hose
Year Description Part Number 1973 - 1981 Vertical Radiator
350 & 454 Engine GM: 343414
NAPA: 7581
Autozone: E70735 (Dayco)
1982 Horizontal Radiator
350 Engine GM: 343414
NAPA: 7581
Autozone: E70735 (Dayco)
1982 - 1984 Horizontal Radiator
454 Engine GM: 14049500
NAPA: 8154
Autozone: E71430 (Dayco)
1985 - 1994 Horizontal Radiator
454 Engine
(Varies by Model & option) GM: 14049500
NAPA: 8154
Autozone: E71430 (Dayco)
GM: 15595587
NAPA: 7537
Autozone: B70846 (Dayco)
GM: 14042372
NAPA: 7537
Autozone: B70846 (Dayco)
Oz:
And it would best to be a separate topic - > Chevy 454 (7.4L) Fan belts & hoses AIR removed :)
bnlfan:
I am having a hard time finding the ps to hydroboost belt. It is 41 inches but very thin v belt. Any one know the part number? It is the belt on the rear of the pully.
Rickf1985:
The power steering IS the hydroboost? Are you talking about the belt that goes around the AC? The one on the back of the pulley if I remember correctly goes to the A.I.R. Pump on top center of the engine.
This information is the very first post in this thread on four posts above yours!
1985 1/2 - 1990 With A/C,
Hi Ride
3/8 inch x
41 inches
GM Code: XL GM: 9433735
NAPA: 15410 or 257410
Autozone: 15410 (Duralast) Used: 75 +/- 5lbs
New: 125 +/- 5lbs
bnlfan:
Perhaps it is not a stand alone hydroboost pump. But there is a belt not found in the list, . I got all the belts and then some, listed on this thread. This belt is barely as big around as a pencil. It is a v belt with no teeth. Laying under the motor,it is on the back half of the power steering pulley. It is at the very bottom of the motor. If you are on your back facing up, head by the transmission, the dual pulley is on the left and it goes to a pulley next to it.
None of the belts listed that the autoparts people cross matched are anywhere close. The belt measures right at 41 inches and about 6 mm wide.
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