1967 427 water pump bolts

[Keith G.]

Do they use lock washers?

[Michael G.]

Re: 1967 427 water pump bolts

Keith,

Refer to your assembly manual but believe they do. Manual will confirm either way.

[Ronald L.]

Re: 1967 427 water pump bolts

Appears they do - but would not be in the asy manual.

Hopefully someone with detailed Tonawanda info can chime in.

[Mike M.]

Re: 1967 427 water pump bolts

The water pump was on the engine as assembled and painted at Tonawanda, arriving at STL as part of the engine assembly, therefore would not appear in the AIM.
Your '67 427 did not have lock washers.
The upper passenger side bolt also had a stud with the hex painted engine orange and the threads left bare.
HaND

[Ronald L.]

Re: 1967 427 water pump bolts

Mike - 66 were the same?

[Rich P.]

Re: 1967 427 water pump bolts

Mike - 66 were the same?

I know no 65-69 did not use lock washers and I'm pretty sure the same applies up to 74.

Rich

[Mike M.]

Re: 1967 427 water pump bolts

Yes, Ron. '66 was the same as '67.
HaND

[Joe L.]

Re: 1967 427 water pump bolts

I know no 65-69 did not use lock washers and I'm pretty sure the same applies up to 74.

Rich

Rich------


I don't think that any Chevrolet V-8 ever used lockwashers between the bolt head and the waterpump casting. Lockwashers were used between the bolt head and an alternator or other brace when it was attached by a waterpump bolt, though. Also, lockwashers were used on the outboard side of studs sometimes used in place of waterpump bolts in order to attach braces, etc.

[Rich P.]

Re: 1967 427 water pump bolts

Rich------


I don't think that any Chevrolet V-8 ever used lockwashers between the bolt head and the waterpump casting. Lockwashers were used between the bolt head and an alternator or other brace when it was attached by a waterpump bolt, though. Also, lockwashers were used on the outboard side of studs sometimes used in place of waterpump bolts in order to attach braces, etc.

Joe,

Thats my experiance also small blocks included. Maybe they figured the sealant on the threads of the bolts would keep them from backing out sorta like loctite.

Rich