403 Pistons NEEDED
December 15th, 2017, 02:52 PM
#1
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Join Date: Dec 2017
Posts: 5
403 Pistons NEEDED
Sent my 403 in to the machine shop to have the cylinders cleaned up and they took to much off by mistake. Unfortunately I can't afford to buy new overbore slugs for it, so I'm really hoping I can find something out there left over from someone else's project or something.
Thanks for looking,
My email below for fastest response.
Chris
gunman_7@hotmail.com
Thanks for looking,
My email below for fastest response.
Chris
gunman_7@hotmail.com
December 15th, 2017, 10:14 PM
#3
Registered User
Join Date: Sep 2017
Location: St. Paul Minnesota
Posts: 4,015
[QUOTE=MinnesotaMuscle;1062159]Sent my 403 in to the machine shop to have the cylinders cleaned up and they took to much off by mistake. Unfortunately I can't afford to buy new overbore slugs for it, so I'm really hoping I can find something out there left over from someone else's project or something./QUOTE]
Do you care to mention where the shop is located ? Maybe it needed a bore job to clean it up to begin with. What size pistons are you looking for ?
RALPH
P.S. I'll try to send an email or PM on here.
Do you care to mention where the shop is located ? Maybe it needed a bore job to clean it up to begin with. What size pistons are you looking for ?
RALPH
P.S. I'll try to send an email or PM on here.
December 16th, 2017, 08:52 AM
#5
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Join Date: Dec 2017
Posts: 5
Ralph, I sent you a PM.
The long time operator of the shop first measured the bore and felt confident the stock bore could be cleaned up. He turned it over to his apprentice to do the work when the mistake happened. The senior shop operator apologized and stated he felt the kid shouldn't have needed to remove as much as he did. We're still working it out. The kid ended up taking .15 off over stock bore, so I'm still able to utilize any overbore piston, just need to figure out how much to open it up again once I have pistons in hand.
I guess I don't see how my location has much to do with looking for an object that would be mailed. Besides, my name should be obvious enough for whatever reason someone felt they needed that info.
The long time operator of the shop first measured the bore and felt confident the stock bore could be cleaned up. He turned it over to his apprentice to do the work when the mistake happened. The senior shop operator apologized and stated he felt the kid shouldn't have needed to remove as much as he did. We're still working it out. The kid ended up taking .15 off over stock bore, so I'm still able to utilize any overbore piston, just need to figure out how much to open it up again once I have pistons in hand.
I guess I don't see how my location has much to do with looking for an object that would be mailed. Besides, my name should be obvious enough for whatever reason someone felt they needed that info.
Last edited by MinnesotaMuscle; December 16th, 2017 at 08:55 AM.
December 16th, 2017, 09:08 AM
#6
Hookers under Hood
Join Date: Nov 2013
Location: Ontario, Canada
Posts: 3,543
[QUOTE=MinnesotaMuscle;1062298]
The kid ended up taking .15 off over stock bore, so .
Are you sure he opened it up .15 and not .015? A hun-fifty is a big mistake. The long time owner should have overseen the first bore prior to allowing the apprentice to complete the other 7 IMO.
The shop owner should either supply new pistons or supply another used block JMO.
I hope it works out!
Eric
The kid ended up taking .15 off over stock bore, so .
Are you sure he opened it up .15 and not .015? A hun-fifty is a big mistake. The long time owner should have overseen the first bore prior to allowing the apprentice to complete the other 7 IMO.
The shop owner should either supply new pistons or supply another used block JMO.
I hope it works out!
Eric
December 16th, 2017, 09:09 AM
#7
Registered User
Join Date: Apr 2007
Location: South Central Florida
Posts: 2,734
403 Pistons
I have a NOS set of L2451 0.030" forged pistons. These were the ones made before they were sourced from India 
. If interested, email me: drolds1@bellsouth.net. Thanks, Bob.
. If interested, email me: drolds1@bellsouth.net. Thanks, Bob.
December 16th, 2017, 11:26 AM
#8
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Join Date: Sep 2017
Location: St. Paul Minnesota
Posts: 4,015
Ralph, I sent you a PM.
Thanks
The long time operator of the shop first measured the bore and felt confident the stock bore could be cleaned up. He turned it over to his apprentice to do the work when the mistake happened. The senior shop operator apologized and stated he felt the kid shouldn't have needed to remove as much as he did. We're still working it out. The kid ended up taking .15 off over stock bore, so I'm still able to utilize any overbore piston, just need to figure out how much to open it up again once I have pistons in hand.
Chris, looks like someone has a set of pistons. I have been on here for only a few months and they seem like a great bunch of people and very helpful.
I guess I don't see how my location has much to do with looking for an object that would be mailed. Besides, my name should be obvious enough for whatever reason someone felt they needed that info.
Thanks
The long time operator of the shop first measured the bore and felt confident the stock bore could be cleaned up. He turned it over to his apprentice to do the work when the mistake happened. The senior shop operator apologized and stated he felt the kid shouldn't have needed to remove as much as he did. We're still working it out. The kid ended up taking .15 off over stock bore, so I'm still able to utilize any overbore piston, just need to figure out how much to open it up again once I have pistons in hand.
Chris, looks like someone has a set of pistons. I have been on here for only a few months and they seem like a great bunch of people and very helpful.
I guess I don't see how my location has much to do with looking for an object that would be mailed. Besides, my name should be obvious enough for whatever reason someone felt they needed that info.
What kind of body is the 403 going into ?
RALPH
December 17th, 2017, 07:09 AM
#10
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Join Date: Feb 2009
Location: Mosheim, TN
Posts: 153
Not mine, but there is a set of .040 over on ROP.
https://www.tapatalk.com/groups/real...gs-t15294.html
Rick
https://www.tapatalk.com/groups/real...gs-t15294.html
Rick
December 17th, 2017, 07:45 AM
#11
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Thread Starter
Join Date: Dec 2017
Posts: 5
[QUOTE=76olds;1062303]
Oops, your correct, meant to say .015, and he did all eight cylinders, so it's a full set of slugs I'm looking for.
Rocketman, I'll shoot you an email.
The block is a numbers matching for my "79 Trans Am I"ve had since I was 18yo, took to prom, got married in, brought kids home from hospital in, so It's of significant value to me. So I'd like to locate a .020 over piston first to remove as little material as I can as I'll have this vehicle for a whole lot of years to come. But if I have no luck, it'll be the .030 route.
Thanks for the help guys.
The kid ended up taking .15 off over stock bore, so .
Are you sure he opened it up .15 and not .015? A hun-fifty is a big mistake. The long time owner should have overseen the first bore prior to allowing the apprentice to complete the other 7 IMO.
The shop owner should either supply new pistons or supply another used block JMO.
I hope it works out!
Eric
Are you sure he opened it up .15 and not .015? A hun-fifty is a big mistake. The long time owner should have overseen the first bore prior to allowing the apprentice to complete the other 7 IMO.
The shop owner should either supply new pistons or supply another used block JMO.
I hope it works out!
Eric
Rocketman, I'll shoot you an email.
The block is a numbers matching for my "79 Trans Am I"ve had since I was 18yo, took to prom, got married in, brought kids home from hospital in, so It's of significant value to me. So I'd like to locate a .020 over piston first to remove as little material as I can as I'll have this vehicle for a whole lot of years to come. But if I have no luck, it'll be the .030 route.
Thanks for the help guys.
December 18th, 2017, 06:19 PM
#12
MOTORHEAD
Join Date: Feb 2011
Location: minnesota USA
Posts: 6,617
[QUOTE=MinnesotaMuscle;1062505]
Address: 694 Payne Ave, St Paul, MN 55130
Phone: (651) 222-7374
Kelley racing
St Paul
maybe you can knurl and file fit some rings??
Oops, your correct, meant to say .015, and he did all eight cylinders, so it's a full set of slugs I'm looking for.
Rocketman, I'll shoot you an email.
The block is a numbers matching for my "79 Trans Am I"ve had since I was 18yo, took to prom, got married in, brought kids home from hospital in, so It's of significant value to me. So I'd like to locate a .020 over piston first to remove as little material as I can as I'll have this vehicle for a whole lot of years to come. But if I have no luck, it'll be the .030 route.
Thanks for the help guys.
Rocketman, I'll shoot you an email.
The block is a numbers matching for my "79 Trans Am I"ve had since I was 18yo, took to prom, got married in, brought kids home from hospital in, so It's of significant value to me. So I'd like to locate a .020 over piston first to remove as little material as I can as I'll have this vehicle for a whole lot of years to come. But if I have no luck, it'll be the .030 route.
Thanks for the help guys.
Address: 694 Payne Ave, St Paul, MN 55130
Phone: (651) 222-7374
Kelley racing
St Paul
maybe you can knurl and file fit some rings??
December 18th, 2017, 10:34 PM
#13
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Join Date: Sep 2017
Location: St. Paul Minnesota
Posts: 4,015
Address: 694 Payne Ave, St Paul, MN 55130
Phone: (651) 222-7374
Kelley racing
St Paul
maybe you can knurl and file fit some rings??
Thanks, I made a note of them also.
December 19th, 2017, 03:04 PM
#14
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Thread Starter
Join Date: Dec 2017
Posts: 5
I talked to Kelley, super nice guy. He said no one knurls anymore, and he has long tossed out the tools to do it. Also that maybe 4-5 thou was the biggest overbore you could do it too, mine being 15 thou was way to much, he said only way was to bore it and get new slugs for it. Was interesting learning about it though, I didn't know such thing existed.
Thanks for the heads up.
Thanks for the heads up.
January 22nd, 2019, 06:11 AM
#15
Registered User
Join Date: Jul 2010
Posts: 49
I have a NOS set of L2451 0.030" forged pistons. These were the ones made before they were sourced from India . If interested, email me: drolds1@bellsouth.net. Thanks, Bob.
. If interested, email me: drolds1@bellsouth.net. Thanks, Bob.Have a 403" pending!
(Add) You can e-mail me at Theengineshop@aol.com
Thanks, Gary in N.Y.
P.S. Trying to avoid using any of the "cast" pieces out there!
January 22nd, 2019, 08:04 AM
#16
Registered User
Join Date: Apr 2007
Location: South Central Florida
Posts: 2,734
Hi Bob, I realize this is an older post but is there any remote chance you still have those pistons available??
Have a 403" pending!
(Add) You can e-mail me at Theengineshop@aol.com
Thanks, Gary in N.Y.
P.S. Trying to avoid using any of the "cast" pieces out there!
Have a 403" pending!
(Add) You can e-mail me at Theengineshop@aol.com
Thanks, Gary in N.Y.
P.S. Trying to avoid using any of the "cast" pieces out there!
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