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What size are small block Chevy water pump bolts?

Fits Small Block Chevy (SBC). These bolts are 2″ long (under head) 2 1/4″ overall with 1″ threaded.

What size bolts Chevy water pump?

Water pump alloy steel pulley nose bolts kit for Chevy small block 265-283-302-305-307-327-350-400 engines. The bolts in this kit are 5/16″-24 x 3/4″ flat head cap screw. This bolt kit is used when you remove fan and stock pulley and install an aluminum pulley nose.

What size are the water pump bolts?

For most water pumps, you will need bolts with a 5/16-inch thread width, and the width of the head may vary from 13 mm to 15 mm. Depending on the location of the missing bolts, you will need approximately eight bolts ranging in length from 1 1/4 to 2 1/4 inches.

Are all SBC water pumps the same?

Identify Your Chevy Water Pump GM used different types of water pumps over the years. While both types of pumps will bolt-on, that doesn’t mean that both will work. The type of pump you use will affect the alignment of the belts and pulleys, and could cause clearance issues with the cooling fan and radiator.

Do water pump bolts need sealant?

When changing a water pump, replace all old gaskets and seals with new ones. If your new pump comes with a seal, make sure it’s in impeccable condition before installing it. Perhaps you’re tempted to apply sealant to an O-ring or a dry seal, just to be ‘extra safe’, but these seals don’t need sealant!

What do I put on water pump bolts?

Use blue thread locker on the water pump bolts and make sure the old gasket material is all cleaned up and you should have no leaks. I disagree with all of this, except the cleaning. You don’t use thread locker on the bolts, you use thread sealant and I have never had a problem with RTV and paper gaskets.

Will a water pump seal with a broken bolt?

There is a 50/50 chance that it will seal without that bolt. But if you have the time I’d say do it right the first time. Set the timing at TDC, remove the cover, remove the broken bolt and replace them with some stainless steel bolts and use plenty of anti-seize on your bolts when you re-install.

How do you remove a rusted bolt without a head?

One sure-fire method is one of the most effective ways to remove all stuck bolts. just cuts through the bolt from two or three angles. Then hit it with a chisel and use a hammer to reduce the pressure. This Relief cuts work superiorly on the bolt.