The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Work those trucks!




Stovebolt is pleased to support the Salvation Army!
We're doing fine but many around the World are not. Instead of making a contribution to us this holiday season, how about making your contribution to a great organization with a long history of helping people in need around the world?

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
8 registered members (glennj3, KEVINSKI, 47bolter, Cosmo, 2 invisible), 146 guests, and 4 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums48
Topics116,502
Posts930,038
Members42,646
Most Online940
Apr 5th, 2017
Image Posting Policy
Previous Thread
Next Thread
Print Thread
'49 216 odd valves #1333920 Fri Nov 15 2019 08:47 PM
Joined: Sep 2017
Posts: 17
I
imstilllarry Offline OP
New Guy
Just pulled the head off my '49 3600 216 with 46K miles. It seem to run pretty well but huge cloud of smoke until it warmed up. Then just a little smoke. Also no smoke on compression going down hill so I was guessing it need valve seals and maybe a valve job.

The head has cleaned up pretty well and is straight. But the valves look bad. Also some of them are flat and some cupped. Not intake one way and exhaust the other. All were very difficult to clean up and some have pits and they had lots of carbon on the mating surface. So I'm guessing someone put a handful of other brand valves at some point. Pistons had carbon but cylinder walls look great and almost no ridge.

Anyway it looks like I'll need to buy new valves. So my question is where should I buy them? Can I just seat them in with dual grit compound?

Thanks for the help. Larry


1949 3600 216 4 speed (completely original)
Re: '49 216 odd valves [Re: imstilllarry] #1333923 Fri Nov 15 2019 09:03 PM
Joined: Feb 2004
Posts: 19,258
H
Hotrod Lincoln Offline
Boltergeist
Valves are only one third of the equation. You also need to have properly-fitting valve guides, and the correct position and width of the valve seats. You'll also need to get the head magnafluxed to check for cracks. Doing a shade tree job after buying a whole set of valves would be a really bad decision. Bite the bullet and let a good machine shop do their thing.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: '49 216 odd valves [Re: imstilllarry] #1333966 Sat Nov 16 2019 03:48 AM
Joined: Sep 2017
Posts: 17
I
imstilllarry Offline OP
New Guy
Thanks Jerry, I'll check out having the head done by a machine shop. Still seems odd to me that the valves don't match. Do you know are these value usually flat or cupped? The valve seals were still in place but they were pretty hard. However I removed them all without breaking any. They are just little rubber rings similar to o-rings. Do the new seals the same or more like a newer engine at the bottom of the spring? Larry


1949 3600 216 4 speed (completely original)
Re: '49 216 odd valves [Re: imstilllarry] #1333967 Sat Nov 16 2019 04:02 AM
Joined: Feb 2004
Posts: 19,258
H
Hotrod Lincoln Offline
Boltergeist
Those rubber O rings are supposed to prevent oil running down the valve stems and puddling on top of the guides. If you choose to use some type of umbrella-style seal, DO NOT double up and use the O rings as well. It's possible to get too much of a seal and wear the guides out from lack of lubrication.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: '49 216 odd valves [Re: imstilllarry] #1333994 Sat Nov 16 2019 05:30 PM
Joined: Jul 2007
Posts: 518
'
'54 3600 Offline
Shop Shark
Larry ,

I'd be very leery of the quality of aftermarket valves .

IMO most of the stuff being sold is made in china junk .

My choice would be GM NOS parts for your valve job .

These parts can still be purchased NOS .

You can go to ebay & type in the part # in the search box .

Intake Valves - GM part # 3688760

I see GM NOS inlet valves on ebay .

Dan's GM Obsolete
Chinook , Montana
phone : 406 - 357 - 2615

Dan's has ( 15 ) GM NOS intake valves in stock .

PIC

https://i.postimg.cc/HsF27qH1/Intake-Valves-GM-3688065.jpg


There are Exhaust Valves available on ebay .

Exhaust Valves - GM part # 3835318

PIC

https://i.postimg.cc/MHMB6GnM/3835318-exhaust-valves.jpg

Dan's GM Obsolete has ( 8 ) exhaust valves in stock


Intake Valve Guides

GM part # 3688760

There are some on ebay

PIC

https://i.postimg.cc/4y9KCF0p/Chev-216-Inlet-Valve-Guides-3688760.jpg


Exhaust Valve Guides

GM part # 3688761

PIC

https://i.postimg.cc/BnspJd0S/Exhaust-Valve-Guides-GM-3688761.jpg

There are some on ebay

Dan's has ( 18 ) exhaust valve guides in stock


Valve guide Seals

GM # 3835333

There are some nos seals on ebay

PIC

https://i.postimg.cc/HLnQxmPg/Valve-Seals-GM-NOS-3835333.jpg


You may want to consider new nos valve springs

They show up on ebay quite often .

PIC

https://i.postimg.cc/wTkJQMCz/Chevy-216-6-Cylinder-Valve-Springs-GM-NOS.jpg

&

https://i.postimg.cc/Ls74v0gM/839304-216-valve-springs.jpg


You should check on the condition of the valve spring caps

GM part # 3835392

PIC

https://i.postimg.cc/6qX2dxzT/Valve-Spring-Caps-GM-NOS.jpg


Valve Stem Locks

IMO they should be replaced .

PIC

https://i.postimg.cc/FFV12qDg/Valve-Stem-Key-Locks-GM-NOS.jpg


George
'54 3600






Last edited by '54 3600; Mon Nov 18 2019 07:52 PM. Reason: add

1954 3600
Re: '49 216 odd valves [Re: imstilllarry] #1333998 Sat Nov 16 2019 06:07 PM
Joined: Feb 2004
Posts: 19,258
H
Hotrod Lincoln Offline
Boltergeist
Stovebolt six exhaust valves are identical to the ones used in a lot of small block V8's. There's no point in paying outrageous prices to some resto-ripoff place for part number matching exhaust valves when stainless steel exhausts are a dime a dozen from lots of online suppliers. They're better quality and more durable than OEM valves, and they'll probably last as long as you own the truck. The intake valves are sort of oddball- - - -I don't know of a suitable work-around on them.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: '49 216 odd valves [Re: imstilllarry] #1334025 Sun Nov 17 2019 12:34 AM
Joined: Sep 2017
Posts: 17
I
imstilllarry Offline OP
New Guy
Hey thanks again. I already found that NAPA has the intake for $21 while the exhaust are $7 each.


1949 3600 216 4 speed (completely original)

Moderated by  Woogeroo 

Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.3