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Old 05-16-2018, 08:05 PM   #1
87 STEPPER
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Question I Need Water Pump Torque Values?

I'm in need of the 6ea mount bolts and the idle pulley nuts on an all aluminum 5.3L block RPO LO8 2010 Colorado.
Tnkx.
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Old 05-16-2018, 09:09 PM   #2
95 S_Trucker
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Re: I Need Water Pump Torque Values?

For the water pump: First pass is 11 ft/lbs. Second pass is 22 ft/lbs.

The 3 bolts for the belt tensioner should be 37 ft/lbs.
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Old 05-17-2018, 02:07 AM   #3
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Re: I Need Water Pump Torque Values?

Are you looking for torque specs or are u looking to buy the bolts and nuts?
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Old 05-17-2018, 08:22 AM   #4
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Re: I Need Water Pump Torque Values?

Title says torque values?

If you need the bolds, get them at the dealer, hardware store bolts look out of place.
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Old 05-17-2018, 03:18 PM   #5
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Thumbs up Re: I Need Water Pump Torque Values?

Thanks 95 S Trucker that's what I was looking for.

In the aviation profession a fastener Torque is known as or referred to as a Value not a Spec.

Are the water pump mount bolts on the LS engines known for going bad?

I've had this truck 4 yr's and it's the original pump and this is the first thing that I've had to replace on it other than plugs n wires.

I don't know if the hardware is good or bad as I am still driving it I plan to do the water pump this weekend. It's leaking out the weep hole after only 267.000 miles.
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Old 05-17-2018, 03:32 PM   #6
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Re: I Need Water Pump Torque Values?

Quote:
Originally Posted by 87 STEPPER View Post
Thanks 95 S Trucker that's what I was looking for.

In the aviation profession a fastener Torque is known as or referred to as a Value not a Spec.

Are the water pump mount bolts on the LS engines known for going bad?

I've had this truck 4 yr's and it's the original pump and this is the first thing that I've had to replace on it other than plugs n wires.

I don't know if the hardware is good or bad as I am still driving it I plan to do the water pump this weekend. It's leaking out the weep hole after only 267.000 miles.
Ive never repalced water pump bolts on an ls and i've done abunch of them at work
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 101kmiles
2002 Honda Accord 4 door With 275k(sisters car)
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2002 Sububran 5.3 225k
2000 Tahoe 5.3l 369k

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Old 05-17-2018, 03:43 PM   #7
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Re: I Need Water Pump Torque Values?

Youre first sentence says you are in need of 6 bolts and nuts for the idler. It was a little unclear on this side of the screen.

The bolts don't go bad.
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Old 05-17-2018, 05:53 PM   #8
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Wink Re: I Need Water Pump Torque Values?

Quote:
Originally Posted by 95 S_Trucker View Post
Youre first sentence says you are in need of 6 bolts and nuts for the idler. It was a little unclear on this side of the screen.

The bolts don't go bad.
Yeah I can see how that looks like I'm looking for the hardware sorry for the confusion.

Thank you both for this info.
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Old 05-17-2018, 07:53 PM   #9
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Re: I Need Water Pump Torque Values?

Just replaced the water pump on my LQ4 in my '06 Silverado. Reused the original bolts... no prob.

Gary
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