How many bolts go through water jacket into block-WATER PUMP!!!!

  • Sponsors (?)


I remembered someone posting all the bolts needed for the water pump, so I did a quick search.

Courtesy of 5spd GT

Here are some specs on the OEM fasteners, going clockwise looking at the
front of the engine, starting at the lower passenger side:

All threads are 5/16-18 pitch except for the stud portion of #6-9
which is 3/8-16

#1 Stud/Bolt, OAL 3-5/16, UHL 2.25
Bolt threaded 1", shank 1.25 (1 + 1.25 = 2.25" UHL)
Flange head .25", 5/16-18 stud thread = 13/16"
1 + 1.25 + .25 + 13/16 = 3-5/16" OAL
Drive size is 1/2"
Notes: This bolt/stud clamps the TCC to the block, retains the
timing tab,
and the stud retains the support bracket for the AIR pump,
accessory nut is 5/16-18, 1/2" drive (not a flange nut, but
could be)

#2 Stud/Bolt, OAL 3-1/16, UHL 2.25
Bolt threaded 1", shank 1 (1 + 1 = 2" UHL)
Flange head .25", 5/16-18 stud thread = 13/16"
1 + 1 + .25 + 13/16 = 3-1/16" OAL
Drive size is 1/2"
Notes: Same as #1, but the shank is .25" shorter. This bolt/stud
clamps the
TCC to the block, and retains the timing tab. Stud may be unused

#3 Bolt, OAL 4-1/16, UHL 3-7/8
Bolt threaded 1", shank 2-7/8 (1 + 2/7/8 = 3-7/8" UHL)
Standard head 3/16"
1 + 2-7/8 + 3/16 = 4-1/16" OAL
Drive size is 5/8"
Notes: Clamps water pump to TCC and TCC to block

#4 Same as #3

#5 Bolt, OAL 2-7/8, UHL 2-11/16
Bolt threaded 1", shank 1-11/16 (1 + 1-11/16 = 2-11/16" UHL)
Standard head 3/16"
1 + 1-11/16 + 3/16 = 2-7/8" OAL
Drive size is 5/8"
Notes: Clamps water pump to TCC

#6 Stud/Bolt, OAL 3-7/16, UHL 1-15/16
Bolt threaded 1", shank 15/16 (1 + 15/16 = 1-15/16" UHL)
Standard head 3/16", 3/8-16 stud thread = 1-5/16"
1 + 15/16 +3/16 + 1-5/16 = 3-7/16" OAL
Drive size is 5/8"
Notes: Stud retains accessory, accessory flange nut is 3/8-16,
9/16 drive
Clamps water pump to TCC

#7 Same as #6

#8 Stud/Bolt, OAL 5-5/16, UHL 5-1/16
Bolt threaded 1", shank 2-7/8 (1 + 2-7/8 = 3-7/8" UHL)
Standard head 3/16", 3/8-16 stud thread = 1-1/4"
1 + 2-7/8 +3/16 + 1-1/4 = 5-5/16" OAL
Drive size is 5/8"
Notes: Stud retains accessory, accessory flange nut is 3/8-16,
9/16 drive
Clamps water pump to TCC and TCC to block

#9 Stud/Bolt, OAL 6-1/2, UHL 5-1/16
Bolt threaded 7/8", shank 4-3/16 (7/8 + 4-3/16 = 5-1/16" UHL)
Standard head 3/16", 3/8-16 stud thread = 1-1/4"
7/8 + 4-3/16 + 3/16 + 1-1/4 = 6-1/2" OAL
Drive size is 5/8"
Notes: Stud retains accessory, accessory flange nut is 3/8-16,
9/16 drive
Clamps water pump to TCC and TCC to block

#10 Bolt, OAL 2-1/4, UHL 2
Bolt threaded 1", shank 1 (1 + 1 = 2" UHL)
Flange head 1/4"
1 + 1 + 1/4 = 2-1/4" OAL
Drive size is 1/2"
Notes: Clamps TCC to block

#11 Same as #10

#12 Bolt, OAL 1-1/8, UHL 7/8
Bolt threaded 7/8", no shank (7/8 + 0* = 7/8" UHL)
Flange head 1/4"
7/8 + 1/4 = 1-1/8" OAL
Drive size is 1/2"
Notes: Clamps TCC to block (top, near intake)

#13 Same as #12

Ford studs use 5/16” on the engine side and 3/8” studs on the accessory side.

From Helmut Roner for timing cover/water pump bolts for no p/s and no a/c:

Lowes Hardware:

One 5/16 x 5½ inch @ $.47, Item # 55819.
Six 5/16 x 2 inch @ $.16 each, Item # 63319.
Three 5/16 x 4 inch @ $.28 each, Item # 63322
One 5/16 x? inch @ $. , Item # ?????

The last one I typed I don't have, yet. It should be 2-3/4 to 3 inches long. I bought a 2½ and not much of the threads go far enough into the timing cover. It's for the bolt hole that is between the two water ports on the upper left of the water pump. I'll have that info later tomorrow.

The bolts for the water pump pulley to be used without a belt-driven fan are 5/16 x 3/4 24-thread. The two rearmost cover bolts which bolt the cover to the block (not shown) are 5/16 x 3/4 inch. I am scavenging those from an ARP bolt kit that I have which can't be used with late model timing covers. Only a few from the kit could be used as the kit was designed for older model 289/302/351W timing covers._________________