Tucker Goodrich Profile picture
May 1 3 tweets 4 min read Read on X
1/2 This is how civilization ends.

"Due to the dwindling supply of quality machine shops and very poor quality aftermarket parts as well as a lack of people interested in learning the engine building and machine shop trades, I regret to inform our many followers and current as well as past customers that we will no longer be taking on any new engine build orders unless it is for a car we are restoring. Since Covid, we have had to do rework on multiple engine builds due to poorly manufactured parts that failed during break in or machine work that was below our standards due to all the old farts like me dying off with no younger workers interested in taking their place. For example, rod bearings are now made too thin resulting in 390 and 401 crank grinds needing to be ground .0085, .0185 or .0285 under standard rod journal size yet all but one machine shop in the entire Phoenix area refused to do anything other than the standard .010, .020 or .030 grinds. Even worse, when the one shop that will grind the cranks the way we tell them we need them loses their crank grinder to retirement in another year or two, they do not plan to replace him. Machine work that used to have a turnaround of 2-3 weeks now takes a minimum of 2-4 months due to an acute lack of people interested in learning machine work and doing manual physical labor. In fact, one engine block was at a machine shop for a year and when we got it back hey did such a poor sleeve job in one cylinder that it was not even useable so it is now a 250 lb paper weight.

About 15 years ago I nearly bought out an aging gentlemen's machine shop and continue to regret not doing so due to the lack of availability of places to get the work done.

As for poor quality parts, Edelbrock aluminum heads are now such poor quality and filled with so much manufacturing machining slag that we have to completely disassemble them, reset the valve stem and spring heights and even sometimes have them resurfaced because the slag scratched the head gasket surface. Similarly, there are only a couple of camshaft manufacturers remaining that harden their cams correctly and nearly all flat tappet lifters are now such terrible quality and inconsistent hardness that we are no longer willing to risk losing a cam due to poorly made cams and lifters. In fact, we now only use either rollers or custom ground flat tappets with Johnson made lifters from Howard or Herbert. For example, we have probably used 50 or more Summit cams over the past 15 years but the last 4 we used did not even make it through break in so they too are now off the list of acceptable quality parts as well.

So what does all of this mean? We will honor whatever engines builds that are not part of a full restoration that we already have in the queue however we must warn all those who have been patiently waiting for their engines to be built that supply chain constraints in addition to rapidly declining parts quality along with a lack of qualified machine shop workers is resulting in our anticipated wait times to get an engine built often doubling in duration. And if anyone is tired of waiting and thinks they can do better elsewhere, we will fully refund their deposit and wish them well.

What used to take a couple of weeks to get back from a machine shop can easily now take 2-4 months or more resulting in our overall engine backlog now being 15-18 months. The bottom line is that custom engine building is on its way to becoming extinct and it won't be too many more years before all of us old farts that currently do this work either retire and/or die off resulting in engine building within the collector car hobby becoming nearly impossible to find. And when you do find someone, don't be surprised if they are backed out 2+ years or more and that they only want to do Chevy builds and know zero about our beloved AMC engines. "The times they are a changin'."
2/2 And any know it all's that are not in this business who try to show everyone how smart they think they are by declaring that these conditions do not exist, despite literally hundreds of others saying they are experiencing the exact same thing, will have their comments deleted because they are clearly talking out of their ass."

3/2 Hopefully this link will work for more people...


• • •

Missing some Tweet in this thread? You can try to force a refresh

Keep Current with Tucker Goodrich

Tucker Goodrich Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!


Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @TuckerGoodrich

Nov 25, 2023
1/ "Human and animal studies support that consuming a high level of linoleic acid (LA, 18:2ω-6), an essential fatty acid and key component of the human diet, increases the risk of colon cancer."

#lcl6 @kevinfolta @talkingbiotech
2/ "Given the importance of LA in the human diet, it is crucial to better understand the molecular mechanisms underlying its potential colon cancer-promoting effects."
3/ "Administration of a diet rich in LA, at human consumption levels, exacerbates AOM/DSS-induced colon tumorigenesis in mice" Image
Read 11 tweets
Nov 19, 2023
Fascinating new book I am reading, suggested by Tom Brenna. I'm learning from every page.

@SBakerMD @KetoCarnivore @bendormiki Image
On dairy: Image
Read 8 tweets
Oct 23, 2023
Paradox! 🤣🤣🤣

1/ "Paradoxically, the increases in body weight, particularly in Western countries, occurred during a period of emphasis on diets low in fat as a means for avoiding weight gain....
2/ "These dietary recommendations were based largely on the concept that high-fat diets were less satiating (39) and that reducing dietary fat reduced risk for cardiovascular disease by lowering circulating fat and cholesterol (5)....
"Perceived"? 🙄

3/ "As a result of the perceived failure of traditional dietary advice, attention shifted to alternative dietary regimes, including low-glycemic-index diets and very-low-carbohydrate ketogenic diets...."
Read 4 tweets
Oct 17, 2023

1/ "The evidence for cardiovascular benefit in these drugs is very strong, and the prescribing labels for them are being updated to include reduction in stroke and other cardiovascular events."

"GLP-1 Agonists For the Kidney"

2/ "Recently [2019], several GLP-1 receptor agonists have been found to have cardiovascular benefit independent of their glucose lowing ability. Liraglutide is one of clinically approved effective GLP-1 receptor agonists."
3/ "In this study, we explored the molecular mechanism of Liraglutide against oxidized low-density lipoprotein (ox-LDL) in cultured endothelial cells."
Read 11 tweets
Oct 10, 2023
1/ Farmed salmon have become fat bags of canola oil.

"The average total lipid content of the farmed salmon muscle was found to be four times that of the wild salmon (8.97 ± 0.63% and 2.14 ± 0.32%, respectively)."
2/ They're full of linoleic acid:

"Furthermore, LA, ...[is] present in large quantities in both farmed salmon and the feed. OA, LA, and ALA are most commonly found in plant sources, and together with C16:0 they are the main constituents in rapeseed oil (Sharafi et al., 2015).
3/ Why?

"Rapeseed oil is one of the main ingredients in salmon feed in Norway today (Aas et al., 2019)."
Read 7 tweets
Oct 4, 2023
1/ Why is it difficult for folks to determine the effects of seed oils?

Take this paper:

"4-HNE Immunohistochemistry and Image Analysis for Detection of Lipid Peroxidation in Human Liver Samples Using Vitamin E Treatment in NAFLD as a Proof of Concept"

2/ It's from @NIH .

Take the introduction:

"Lipid peroxidation is the process in which oxidants, such as free radicals, react with double bonds in the carbon chain of fatty acids, especially polyunsaturated fatty acids.... doi.org/10.1369/002215…
3/ "...In food production, lipid peroxidation products lead to distinctive flavors, for example, in dried cured meats such as Parma ham, but within the human body these can lead to cell injury through modification of macromolecules."
Read 11 tweets

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!


0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy


3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us!