tragic59 Posted December 10, 2007 Report Posted December 10, 2007 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! Quote
martybose Posted December 10, 2007 Report Posted December 10, 2007 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 Quote
james curl Posted December 10, 2007 Report Posted December 10, 2007 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. Quote
tragic59 Posted December 11, 2007 Author Report Posted December 11, 2007 Did you purchase them from a mail-order parts supplier, like Summit or Jeg's, or did you score them at your local parts house? Thanks again for the info. Quote
james curl Posted December 11, 2007 Report Posted December 11, 2007 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. Quote
jd52cranbrook Posted December 11, 2007 Report Posted December 11, 2007 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. Quote
james curl Posted December 11, 2007 Report Posted December 11, 2007 In my case I was going to need new valves and the chev. SS were cheaper than ply. replacement valves. Quote
grey beard Posted December 11, 2007 Report Posted December 11, 2007 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 . . . . . . Quote
Plymouthy Adams Posted December 11, 2007 Report Posted December 11, 2007 the material used should be known as stellite Quote
jd52cranbrook Posted December 12, 2007 Report Posted December 12, 2007 I see, for durability then, and corrosion prevention. Quote
martybose Posted December 12, 2007 Report Posted December 12, 2007 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 Quote
billwillard Posted December 12, 2007 Report Posted December 12, 2007 Still no part #s . My shop said too long and used stock valves Quote
james curl Posted December 13, 2007 Report Posted December 13, 2007 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. Quote
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