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09-15-2018, 12:55 PM | #1 |
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Join Date: Apr 2011
Location: greenville sc
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Oem valves or as close as possible needed for 1987 350 heads
Machine shop put in used unmatched set on valves and lost my originals which was fine.
I am wanting to put all new valves as I don't like the mismatched set in them after getting them back. If I cannot get the exact ones that came in it could someone please direct me to the most like for like set. thank you! |
09-15-2018, 05:01 PM | #2 |
driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
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Re: Oem valves or as close as possible needed for 1987 350 heads
This is a very weird request. What exactly is mis-matching about the valves? My bet is they are all oem style valves. All stock replacements are the most like oem you can get. Anything else is a lot more money and a machine shop wouldn't waste those on a person not paying for them.....
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09-15-2018, 06:44 PM | #3 |
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Re: Oem valves or as close as possible needed for 1987 350 heads
What I mean is I gave him the heads with gem valves that was not bent. I got back valves from other vehicles that are different shapes and mismatched I do not like this and want a new set.
what do you recommend? what they do is just pull from a bin of used cleaned valves that fit and just pop in a valve not caring it wasn't the valves that came out of my heads. it was a Napa shop and a half A job if you ask me I wouldn't do that. |
09-15-2018, 08:18 PM | #4 |
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Location: Louisiana
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Re: Oem valves or as close as possible needed for 1987 350 heads
http://www.competitionproducts.com/S.../#.W52gbPZFyM8
This is for 1.94 intake valves. Not sure what size your head takes but, this should help you get an idea of cost. |
09-15-2018, 11:53 PM | #5 |
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Re: Oem valves or as close as possible needed for 1987 350 heads
Besides the face dia you need to know the stem dia of the ex valves. They come 3/8" & 11/32".
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09-16-2018, 12:08 AM | #6 |
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Re: Oem valves or as close as possible needed for 1987 350 heads
I brought a head into a machine shop a few years ago to get it checked out, I had 1 bad valve, he had a used one on hand, cleaned it up, lapped it to the seat, and it worked great. No reason to change all of them for 1 or 2 mismatched valves. If they are in there, they must be the correct size, what exactly are you worried that is going to happen with the ones that they replaced?
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09-17-2018, 08:36 AM | #7 | |
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Re: Oem valves or as close as possible needed for 1987 350 heads
Quote:
Someone mentioned stem size anyone know for sure which stem size would be in an 87 5.7 350 before I order these? |
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09-17-2018, 08:14 PM | #8 |
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Location: Louisiana
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Re: Oem valves or as close as possible needed for 1987 350 heads
Should be 11/32" unless the heads are from a HD2500 or 3500 5.7.
The exhaust valves had 3/8" stems on these. What is the casting numbers on your heads? |
09-18-2018, 09:44 PM | #9 |
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Re: Oem valves or as close as possible needed for 1987 350 heads
Hey, sorry I am just now seeing this. The heads are 14102193 if I got that right. Are you sure the stems not 11/32 on both?
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09-19-2018, 08:31 PM | #10 |
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Re: Oem valves or as close as possible needed for 1987 350 heads
original valves looked like the ones in this video. Just a smooth edge into the dished area. I received wrong ones back some exhaust ones perfectly flat etc.
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