Author Topic: 406 Block Questions  (Read 719 times)

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C8OX-FE

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406 Block Questions
« 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!

Ghoughton

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Re: 406 Block Questions
« Reply #1 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.

6667fan

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Re: 406 Block Questions
« Reply #2 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.
JB


67 Fairlane 500 482 cid 636/619. Tunnel Wedge, Survival CNC heads, Lykins Custom Hydraulic Roller, face plated David Kee all aluminum TL, Eaton Detroit True-Trac 4.57 9 inch
11.8 @122mph

Lowrider

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Re: 406 Block Questions
« Reply #3 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.

427John

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Re: 406 Block Questions
« Reply #4 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.