Bolt size

[5.7 hemi]

Can someone tell me the bolt sizes for the water pump housing (383, 440, etc.)? There are 3 different lengths, so I need that and diameter, (5/16 or 3/8).

 

[5.7 hemi]

Wow!! Nobody knows what size's are used?

 

[Propwash]

3/8" on diameter............Don't know on lengths though. Spend 10 bucks or guesstamate?

http://store.440source.com/Water-Pump-Housing-Bolt-Kit/productinfo/109-1512/

 

[wedge69]

As Prop said 3/8" But some Lengths are diferent due to the Acsessory's that came bolted on the motor ?
Its not real hard to figure out. Use a long 3/8" rod and push it in till it stops at the threads. Then mark your surface and add about 1 to 1.5" for the threads. Then there you go ! OR go to totaly Stainless and just get there kit !!

 

[5.7 hemi]

I did check 440source and cant justify 10 bucks plus the ride when I can go get them at the local hardware store for a lot less,

 

[wedge69]

Just word up ! You brake one of those Cheap bolts off in the block after it all together You will wish you paid the $10 buck for that ONE bolt !!
Been there Done that !!

 

[fuely62]

Just word up ! You brake one of those Cheap bolts off in the block after it all together You will wish you paid the $10 buck for that ONE bolt !!
Been there Done that !!

X2

 

[Herr_Poopschitz]

Just word up ! You brake one of those Cheap bolts off in the block after it all together You will wish you paid the $10 buck for that ONE bolt !!
Been there Done that !!

Jeez, how tight you torqueing them?

I get all of my fasteners from local stores in stainless and polish them. Cheaper than ripoff 'kits', and look 1000x better.

As for figuring it out, ummm...measure.

 

[5.7 hemi]

C'mon guys!!! Grade 8 bolts only. I'll figure the length out.

 

[Herr_Poopschitz]

C'mon guys!!! Grade 8 bolts only. I'll figure the length out.

I hope you're kidding.

 

[5.7 hemi]

About what?

 

[Propwash]

I did check 440source and cant justify 10 bucks plus the ride when I can go get them at the local hardware store for a lot less,

I hear ya....$3 Bucks at the hardware store Vs. probably $20 total. Sorry I can't help out. Dug through labeled bags from a old tore down 383, found one marked ALT/Water pump. 6 bolts, 3 different sizes, but one is the long ALT Bolt with spacers. Otherwise just 2 sizes. Looks like one bolt was a fairly new replacement.

5 Bolts, measured from top of head to bottom. Alt bolt not measured.
2- 3 1/4"
3- 2 3/4"

Hope it helps somewhat.



Edit:...Just in case, ALT bolt 5.5"

 

[5.7 hemi]

Thanks Prop!!

 

[Propwash]

No sweat 5.7

 

[Herr_Poopschitz]

About what?

Grade 8 to hold on a water pump housing.

 

[5.7 hemi]

For just a few cents more, yep, sure will.

 

[conv67bdere]

Hey 5.7 Hemi . . . Just going to throw this out there . . . an engineer friend of mine has told me this in the past . . .

Grade 8 is great for structural - they're harder and a bit more brittle.

If you add vibration into the mixture ( an engine ) you're better off going with grade 5 . . .

That's my $0.02 . . . and that's about all it worth ( smile ) and some food for thought . . .

 

[wedge69]

Grade 5 is all you need. was just pointing you in the rite direction if you didn't already know about the Cheap bolts some places sell. I had a customer bring me bags of them he got to asemble his drive line. Told him to take them all back !
Just trying to help

 

[Herr_Poopschitz]

Hey 5.7 Hemi . . . Just going to throw this out there . . . an engineer friend of mine has told me this in the past . . .

Grade 8 is great for structural - they're harder and a bit more brittle.

If you add vibration into the mixture ( an engine ) you're better off going with grade 5 . . .

That's my $0.02 . . . and that's about all it worth ( smile ) and some food for thought . . .

I hate pulling this card, but as a degreed mechanical engineer that works in structures in the aerospace industry (I make sure planes are designed so they satisfy both static and fatigue loading, as well as satisfy damage tolerance requirements per the FAA), a grade 5 is more than enough to hold a simple water pump housing on. If they are breaking, there is either a major flaw in the fastener or the installation was performed incorrectly.

A grade 8 will work w/o any worry about fatigue/vibration, but is ultimately overkill, like shooting a mouse w/ a .44 magnum. Ultimately, you're spending a lot more $ than req'd. Might as well buy the bolt 'kit', since all the work's been done.

 

[WP29440SE]

if you are busting water pump housing bolts off in the block , you need to re think what you are doing. they do not need to be that tight. the sealant and the gaskets are there to seal the housing to the block. they only need to be a little past snug to their job. a dab of lock tight will secure them. i have used all sorts of different grade bolts and never had one strip, break or come out. no need to overthink it. if you have at least a good 3/8 " inside the block you are good to go