Jump to content

Chevy stainless steel valves...


Recommended Posts

Posted

Just curious if one of you who has used them could provide part numbers, or specific year/engine applications to use when ordering the stainless steel valves...

Just got off the phone with my machine shop and they said that the Chevy 235 valves he has in shop were too long, when comparing them from memory.

Do the stems need to be cut? Based on the info in the "head milling" thread, I was under the impression that the valves were a direct out-of-the-box fit...

Turns out my valves are shot, so I "may as well" upgrade while I'm replacing them...

Thanks!

Posted
Just curious if one of you who has used them could provide part numbers, or specific year/engine applications to use when ordering the stainless steel valves...

Just got off the phone with my machine shop and they said that the Chevy 235 valves he has in shop were too long, when comparing them from memory.

Do the stems need to be cut? Based on the info in the "head milling" thread, I was under the impression that the valves were a direct out-of-the-box fit...

Turns out my valves are shot, so I "may as well" upgrade while I'm replacing them...

Thanks!

The valves I used were small block V-8 valves, not the inline 6 valves. The legth is exactly right, you just have to use the correct keepers with them.

Marty

Posted

I used standard 235 Chev. I/6 exhaust valves. Everything fit with no problem except you have to use the chevrolet keepers. I have a set of chev valves out of one of my 235 heads and two sets of ply/dodge 218 valves and the chev are .020 longer.

Posted

The machine shop that did the machine work had them in stock for rebuilding 235 chev heads. The 265 chev V-8 exhaust valves are 1 1/2" in dia, same as the 235 I/6 and they are 4.913 long as compared to the I/6 which are 4.905" long or a difference of .008" which the tappets can accommadate. Not sure about later chevrolet V-8s such as 327,305, and 350 cu engine exhaust valve size.

Posted

What benifit do you get using the Chevy valves? Or actually stainless I mean. My engine had 54 years on it before I tore it open. Turns out I could have reused the same valves they were in such good shape. Guess I'm missing something in the stainless.

Posted

This thread sorta' surprises me, too. I've torn four of these critters down to date, and every one of them had good valves with nice margins still intact, even when the pistons and rings were totally shot. My guess is that these valves may wear out on their stem o.d. before the heads wear out in normal V-8 manner. Typically a valve can be refaced as long as the margin on the edge of the face is not too thin. Why, on my own 218, one exhaust guide was shot, but the valve was still good to go. Go figure . . . . . .

MoPar used good materkial in their hardened valves. My guess is that a lot of new valves have been sold to owners by machine shops just to bulk up the bottom line on the job ticket, but then I've been wrong before . . . . . . well, at least once, but then maybe I'm mistaken . . . . . . :)

Posted

When we disassembled my 230, the valves looked fine until you actually put a micrometer on the stems and actually measured them and found a fair amount of wear.

We then put bronze inserts in all of the valve guides, and used the Chebby valves. I don't expect to ever need to mess with them again in my lifetime.

Marty

Posted

Your shop was trying to use chev 350 exhaust valves which are 4 7/8" long as compared to 4 .5375" long as the 235 chev I/6 0r the 265 in V-8. The 350 cu in V-8 is .3375 longer and the springs wouls be too short even if you could allow enough adjustment in the lifters to use them.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Terms of Use