6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > GMC V6 and V12 Engines
#Sponsored

GMC V6 and V12 Engines Engine repair and rebuilding

Reply
 
Thread Tools
  #1  
Old March 30th, 2022, 10:21 PM
Walys60's Avatar
Walys60 Walys60 is offline
-= Dues Paid =-
 
Join Date: Oct 2015
Location: ARIZONA CITY, AZ
Truck: 1960 GMC 3/4 Ton
Age: 54
Posts: 107
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 86
Walys60 is on a distinguished road
Default It's at the Machine Shop

I've got a great old timer here local that folks were recommending I take my 305A to. He knows the 305 well but said it's been 15 years since he's done one and was happy to see it.

However, I just got the call. "No parts available". He found some .60 over pistons for $700 but hates to do it cause they only need to go .30 over. Basically trying talk me out of it with a $2000 parts only cost so far. Figure it would total about $4k all in.

Anyway, I already knew the 'no pistons' thing was coming due to the awesome folks on this board that have already run that down. I hadn't been paying that close of attention to the rest of the stuff. My desperate plea is 'does anyone have a source(s) for engine parts'? If I can't get that bill down to something I can sneak past the wife, I'll have a 305A for sale pretty soon and I'll be stuck throwing in a 350
Reply With Quote
  #2  
Old March 31st, 2022, 11:08 AM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 442
Thanks: 8
Thanked 11 Times in 10 Posts
Rep Power: 200
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: It's at the Machine Shop

Quote:
Originally Posted by Walys60 View Post
I've got a great old timer here local that folks were recommending I take my 305A to. He knows the 305 well but said it's been 15 years since he's done one and was happy to see it.

However, I just got the call. "No parts available". He found some .60 over pistons for $700 but hates to do it cause they only need to go .30 over. Basically trying talk me out of it with a $2000 parts only cost so far. Figure it would total about $4k all in.

Anyway, I already knew the 'no pistons' thing was coming due to the awesome folks on this board that have already run that down. I hadn't been paying that close of attention to the rest of the stuff. My desperate plea is 'does anyone have a source(s) for engine parts'? If I can't get that bill down to something I can sneak past the wife, I'll have a 305A for sale pretty soon and I'll be stuck throwing in a 350
Existing pistons are in good shape? Can't resort to cylinder sleeves in order to use std. bore pistons??
Reply With Quote
  #3  
Old March 31st, 2022, 02:14 PM
lizziemeister'sV6 lizziemeister'sV6 is offline
-= Dues Paid =-
 
Join Date: Aug 2013
Location: Strawberry Point, Iowa
Truck: 1965 Suburban Series 1000 - 351M with mechancal tachometer - PS & PB & 2 speed Pow-R-Flow automatic
Age: 70
Posts: 229
Thanks: 2
Thanked 0 Times in 0 Posts
Rep Power: 140
lizziemeister'sV6 will become famous soon enoughlizziemeister'sV6 will become famous soon enough
Default Re: It's at the Machine Shop

Quote:
Originally Posted by Prowbar View Post
Existing pistons are in good shape? Can't resort to cylinder sleeves in order to use std. bore pistons??
Agree with sleeves and using standard bore pistons - used or new. Doesn't cost much to punch & sleeve 6 holes compared to ditching your V6 and living with the "quilt" of cobbling in a cookie cutter everyday "mouse" engine.
Reply With Quote
  #4  
Old March 31st, 2022, 04:51 PM
Walys60's Avatar
Walys60 Walys60 is offline
-= Dues Paid =-
 
Join Date: Oct 2015
Location: ARIZONA CITY, AZ
Truck: 1960 GMC 3/4 Ton
Age: 54
Posts: 107
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 86
Walys60 is on a distinguished road
Default Re: It's at the Machine Shop

Okay, GREAT point. I understood him to be saying he cannot get pistons period other than .60 over's. Let's assume he meant it had to bored so we need to sleeve it for stock. I though I had understood stock pistons weren't available for these...is that not correct?
I had figured I would take him the old ones too...they don't look that bad to me.
Reply With Quote
  #5  
Old April 1st, 2022, 07:12 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 442
Thanks: 8
Thanked 11 Times in 10 Posts
Rep Power: 200
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: It's at the Machine Shop

Quote:
Originally Posted by Walys60 View Post
Okay, GREAT point. I understood him to be saying he cannot get pistons period other than .60 over's. Let's assume he meant it had to bored so we need to sleeve it for stock. I though I had understood stock pistons weren't available for these...is that not correct?
I had figured I would take him the old ones too...they don't look that bad to me.
That is what we're trying to say, if the original pistons are in good shape you can sleeve the block, bore sleeves to standard bore, and reuse your original pistons.

Hope this helps.
Reply With Quote
  #6  
Old April 4th, 2022, 04:05 PM
Walys60's Avatar
Walys60 Walys60 is offline
-= Dues Paid =-
 
Join Date: Oct 2015
Location: ARIZONA CITY, AZ
Truck: 1960 GMC 3/4 Ton
Age: 54
Posts: 107
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 86
Walys60 is on a distinguished road
Default Re: It's at the Machine Shop

Yeah, sorry, I see that. For some reason I had in my head you were talking about stock size piston, not original. Weird how my mind works, lol. Anyway, I will be talking with him about it today. The originals look good to me...a 'little' bit of scoring on the skirts but otherwise look fine. We'll see what he says. I'll post updates. Thanks!
Reply With Quote
  #7  
Old April 7th, 2022, 02:28 PM
Walys60's Avatar
Walys60 Walys60 is offline
-= Dues Paid =-
 
Join Date: Oct 2015
Location: ARIZONA CITY, AZ
Truck: 1960 GMC 3/4 Ton
Age: 54
Posts: 107
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 86
Walys60 is on a distinguished road
Default Re: It's at the Machine Shop

Well that didn't work. He took one piston out of the box and said 'NOPE'. Coincidentally I had my consult with the financial department at the university my son will be attending the same day (sigh).

He estimated that he could get it done for around $4500. I realize that is similar to a new 'built' crate 350 so wouldn't be completely out of the arena of possible engines but I wasn't really in the engine mindset yet anyway. Add that to the fact I can't do it now that I've got a massive college bill to prevent massing student loan debt for the boy...I'm going to have to put the brakes on this for a while.

I will continue to finish the front end and blast/paint the frame and the park it back in the garage for the summer. I'll be looking for maybe some NOS pistons to show up on eBay...? etc. If anyone comes across any and you're not too greedy please let me know.

Thanks all!
Reply With Quote
  #8  
Old April 7th, 2022, 04:26 PM
FetchMeAPepsi's Avatar
FetchMeAPepsi FetchMeAPepsi is offline
-= Dues Paid =-
 
Join Date: Jan 2013
Location: Edmond, Ks
Truck: 1962 4x4 GMC CECILIA
Posts: 1,783
Thanks: 22
Thanked 6 Times in 5 Posts
Rep Power: 570
FetchMeAPepsi is a glorious beacon of lightFetchMeAPepsi is a glorious beacon of lightFetchMeAPepsi is a glorious beacon of lightFetchMeAPepsi is a glorious beacon of lightFetchMeAPepsi is a glorious beacon of lightFetchMeAPepsi is a glorious beacon of light
Default Re: It's at the Machine Shop

Quote:
Originally Posted by Walys60 View Post
Well that didn't work. He took one piston out of the box and said 'NOPE'. Coincidentally I had my consult with the financial department at the university my son will be attending the same day (sigh).

He estimated that he could get it done for around $4500. I realize that is similar to a new 'built' crate 350 so wouldn't be completely out of the arena of possible engines but I wasn't really in the engine mindset yet anyway. Add that to the fact I can't do it now that I've got a massive college bill to prevent massing student loan debt for the boy...I'm going to have to put the brakes on this for a while.

I will continue to finish the front end and blast/paint the frame and the park it back in the garage for the summer. I'll be looking for maybe some NOS pistons to show up on eBay...? etc. If anyone comes across any and you're not too greedy please let me know.

Thanks all!

Danged if you can't catch a break! I'm sorry about your pistons. I can tell you that you can probably catch a full engine that comes up for sale and piece together a full set though. They aren't everywhere, but they do come up for sale. I'd ask on the chevvvy boards in the want ads, those nuts pull out 305s like baby teeth to put in 350s. Or you could check with a small machine shop in a town out a ways from a big city. They may be able to make some for you cheaper than $4500 bucks.

I did a search on custom pistons and I don't know anything about making them, but a guy on another forum said they were 800 bucks a set at https://www.jepistons.com/
You might pay more since they'd probably have to take one of yours and build it off the measurements, but once it's done they could make them for any of us.

If it helps, ask them (or whomever you go with) what the number is to drop the cost and post in the market place. If it's not too high, I bet someone else would want a set in backup for the future, especially since they're so hard to find. Collectively we might pull the price down some.

Or, again, just get a used motor when it comes up for $500 and see if you can salvage the pistons.

More piston shops i found online
http://www.bmeltd.com/
https://www.rosspistons.com/
https://www.cp-carrillo.com/pt-3507-pistons.html
https://www.summitracing.com/search/...t-type/pistons
https://www.us.mahle.com/en/motorspo...erpak-pistons/
__________________
Step by steps:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Some people are like slinkys. Not worth much but funny as heck when pushed down stairs.
__________________
If the women don't find you handsome, they should at least find you handy.

Last edited by FetchMeAPepsi; April 7th, 2022 at 04:34 PM. Reason: added more piston shops
Reply With Quote
  #9  
Old April 7th, 2022, 06:09 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 442
Thanks: 8
Thanked 11 Times in 10 Posts
Rep Power: 200
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: It's at the Machine Shop

That sucks to hear! If you decide on custom pistons one could bump up the compression some, shouldn't hurt.
Reply With Quote
  #10  
Old April 7th, 2022, 06:56 PM
Walys60's Avatar
Walys60 Walys60 is offline
-= Dues Paid =-
 
Join Date: Oct 2015
Location: ARIZONA CITY, AZ
Truck: 1960 GMC 3/4 Ton
Age: 54
Posts: 107
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 86
Walys60 is on a distinguished road
Default Re: It's at the Machine Shop

Quote:
Originally Posted by FetchMeAPepsi View Post

Danged if you can't catch a break! I'm sorry about your pistons. I can tell you that you can probably catch a full engine that comes up for sale and piece together a full set though. They aren't everywhere, but they do come up for sale. I'd ask on the chevvvy boards in the want ads, those nuts pull out 305s like baby teeth to put in 350s. Or you could check with a small machine shop in a town out a ways from a big city. They may be able to make some for you cheaper than $4500 bucks.

I did a search on custom pistons and I don't know anything about making them, but a guy on another forum said they were 800 bucks a set at https://www.jepistons.com/
You might pay more since they'd probably have to take one of yours and build it off the measurements, but once it's done they could make them for any of us.

If it helps, ask them (or whomever you go with) what the number is to drop the cost and post in the market place. If it's not too high, I bet someone else would want a set in backup for the future, especially since they're so hard to find. Collectively we might pull the price down some.

Or, again, just get a used motor when it comes up for $500 and see if you can salvage the pistons.

More piston shops i found online
http://www.bmeltd.com/
https://www.rosspistons.com/
https://www.cp-carrillo.com/pt-3507-pistons.html
https://www.summitracing.com/search/...t-type/pistons
https://www.us.mahle.com/en/motorspo...erpak-pistons/
Thanks for the tips...will definitely be keeping an eye out for options like that.

Sorry, I wasn't clear on the cost. Yeah, shoot, that may be the exact place he was looking at pistons! He mentioned $800 for custom made from someone. He was just saying that is the most expensive of a list of expensive, hard to find, parts for it and the total would end up (after all parts and machine work) around the $4500 range. No assembly but 'ready to assemble' price basically.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Re: [6066 GMC] Machine Shop's Verdict Archiver Previous Forum Posts 0 May 31st, 2006 09:36 AM
Machine shop's got me in a bad way.... Archiver Previous Forum Posts 0 May 15th, 2006 02:02 AM
Re: [6066 GMC] Re: Machine Shop's Verdict Archiver Previous Forum Posts 0 April 29th, 2006 06:56 AM
Machine Shop's Verdict Archiver Previous Forum Posts 0 April 27th, 2006 02:55 AM
Re: Machine Shop's Verdict Archiver Previous Forum Posts 0 April 27th, 2006 02:04 AM


All times are GMT +1. The time now is 03:46 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 921731456399|1730342817|0