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FE Power Forums => FE Technical Forum => Topic started by: C8OX-FE on October 19, 2020, 01:21:05 PM

Title: 406 Block Questions
Post by: C8OX-FE on October 19, 2020, 01:21:05 PM

Hey guys,

I have a 406 block that has been bored to 4.23, I'm assuming it will need 8 sleeves. I'm trying figure out what it's worth. Any help would be appreciated!

Title: Re: 406 Block Questions
Post by: Ghoughton on October 19, 2020, 04:05:14 PM

406 blocks are super thick. I have run them successfully at 4.23 bore, as have others. Even though it’s pushing the limits. I wouldn’t be afraid to run as is with no sleeves. However..... to answer your question about worth, I’d say $700 as is.

Title: Re: 406 Block Questions
Post by: 6667fan on October 21, 2020, 06:47:12 AM

What is the date on it? As mentioned, many were cast thick. If it still sonics well it could be worth double that or more to someone who is after a certain date for their full size Gal or Marauder.

Title: Re: 406 Block Questions
Post by: Lowrider on October 21, 2020, 08:44:10 AM

I ran a 406 bored to 4.23 years ago on the street. Never had any problems with it.

Title: Re: 406 Block Questions
Post by: 427John on October 29, 2020, 12:29:41 AM

So is the thick walls common to all 406's or just certain casting numbers?I'd heard that some late blocks were cast thick but didn't know if it applied to all of them.