BBC DISASTER??? She’s NOT real fine, my 409! AND How to accurately Measure your engine tolerances

Big cubes, Big dollars, Big disaster!
This engine would’ve been destroyed if it had been started up, as it was assembled.
A look inside a hacked up 409 build.
All is not lost, we will rebuild this RARE 409 to its former glory, with the GOLD standard!
#chevrolet #409 #enginebuild

[stevesadusky]

Excellent video AG! It's great that you take the time to explain everything in layman terms so that your audience can follow along and comprehend. Keep them coming!! 👍👍👍👍👍

[alleyoop]

Gold's Garage is one channel that I always click 'Like' at the very start, as I am sure it will be quality content!
Geez, it has to be 40 years since I saw a knurled piston..

[Foxtrot]

Great video and info. Your channel has great potential. Looking forward to watching all the upcoming video's of this 409 build. Keep the wonderful original content coming.

[bobnewman]

The best part of your show is that I always learn something new. Awesome show!

[mhardy]

Always good content here Sir, we all appreciate the honest and thorough work here at Golds garage!

[billfioretti]

Alan, Thank you for this look into the rarely-covered 348-409 Chevrolet Engine series. Picking up and correcting where incompetent or mistake-laden work was previously performed is not for the weak of heart or wallet. Most of us have heard of stacked tolerances. I refer to techs who take on projects such as this 409 as having "Tolerance for stacked intolerances." Takes a special, determined person to see a project such as this through to its successful conclusion.

[terryenyart]

Tips: "ringing" a crankshaft, other components or a chassis to detect rigidity is an old school tip and useful in detecting a cracked component. Some chassis builders ring a suspended chassis to measure the frequency to make sure it's right. Also note the parting line is wide on a forged component, while cast has a sharp line/ridge. Powdered metal rods look different, but typically have a precision wide line or none. Aftermarket rods typically have no forging marks, and do not resemble OE rods. Great information!

[kimmorrison]

Thanks Al, luved the Leak Down test, how to use the mic and the dial bore tools. Will be interesting how this one comes together. Lets hope you have a good block and heads to work with.

[pauljanssen]

My brother bought this 409 12.1 compression 3/4 race cam 3-2 barrels carbs it was in two cars nobody could handle the horsepower they totaled both cars and walked away barely. My brother sold the engine before I put it in his car he was building he was a little bit afraid of the horsepower. It was a very well-built engine.

[Freemanpressx]

Daniel at Powell Maching says that he has cores for a 409 camshaft. His Chanel is on YouTube./

[StuartBlake-izrf]

Alan, love your channel. You take us all through a professional analysis and projected rebuild. The sharing is just fantastic. Everyone is better off understanding or better off being able to imitate a rebuild. Thank you and all the best. your Aussie mate

[johndeere]

I bet someone had a whoopsie on the bore. The process of measuring was good info. I am not a pro, so its all a learning curve. Thanks for your time.

[gordonborsboom]

I was totally in love with the 62-64 Impalas back in the 80's ss a teenager. That's what makes this video cool for me.

[royosborn]

Good info - thanks for putting this together.

[joe-hpnk]

Finding a machine shop you can trust is paramount. Unfortunately for the most part it's a shot in the dark. If they've been in business a long time and or you get a good reference, that's a good start.

[truthboomertruthbomber]

I’m working on an ACVW that was built by a professional hack mechanic. For some reason the #1 intake lifter is hung up in its bore.

[ci]

Very interesting and I like your time and knowledge.

[jamesgeorge]

Mk 4 engine family is the OG big block, the 348 and 409 are the W engine family.

[SandraOrminski]

lets hope you can save another jewel. awesome video alan sir!

[cabotbroughton]

Alan great video but I have one counter point, if one is just checking crank clearances in a used engine you are hoping to not tear down plasti gauge is going to be way faster than micrometer and dial bore gauge.