Mountains Garage: 421 Small Block Chevrolet Block Prep 

I enjoy this channel..it gave me the courage to do my first turbo 400..ive learned alot. And am still learning even tho im 45 and grew up with a ratchet in hand

Also on the TWO lifter valley plugs, i drill a .030..to .040 thou. Hole, it keeps you from having an air lock, espessialy on the pass.side which has about 3 inches to trap air, ask me how i know. Yup .See ..the threaded plugs completely seal, ..where as cup plugs leak air around them .Hope this helps.

Always love your content brother. Very informational and detailed

Cam bearing installs can make you scratch your head on all the install theories. I do it.But if I can I'll let my machine shop expert do it.

They're not freeze plug, they're core plugs from the casting process. If water in the block freezes, the block will crack.

I really like your videos you cover alot of stuff I enjoy doing and I guess I'm strange too I do the same thing like the numbers all lining up on the freez plugs I just don't like doing sloppy work. Your friend from Louisiana Rick 427

Also there is a cup plug under the rear MAIN cap, it can be tapped just be careful to put the plug exactaly between the TWO oil gallerys, Hope this helps.

Great video. I also have a 421 that was built in Maine 🙌🏼. Powerful little SBC.

Nice seeing someone admit they are not perfect!!! We all make mistakes own them and move on is what I’ve always told my guys.

Very informative. Is this a factory stock 400 block ?

What about crank clearance?

I line up the part numbers too. Some folks think I'm nuts for it. But I like it. I've gotten caught on the number 1 cam bearing also. I guess every now and then you have to pay for the short cut. I should probably set number 1 then mount the block on the stand.

What about clearances how did you do it?

It's just bad luck once in a while . I changed many a Buick V6 front cam bearings with no special tools at all . I installed LS cam bearings today with the Jegs cam bearing installer and free handed the #1 . I have not installed a cam yet so wish me luck .

I really like the way you explain the process installing the cam bearings on old Small block's i have a 327.out of my Camaro 67 I want i want to rebuild for my son

I see your like me with having to have the numbers lined up where they can be read. Thank you for the video sir. I would love to meet you one day.

I been wanting to ask you a question and I'm sure the price depends on where you I've I have 2 400 blocks the 2 bolt is a 406 complete the other is a 4 bolt that is 0.60 over its got h beam rods and looks like about 14 to 1 forged pistons no cranki don't know if it was a 413 or a 434 however I'm thinking about turning the 406 into a 421 any Idea what a machine shop charges to Clearance a block for a 421 build? Also I was wanting to know I'm sure you built alot more engines then me my 406 I put a straight edge on the deck of the block and slid a feeler gauge between the straight edge and the top of the piston and the piston is between 0.60 and 0.70 down in the hole does tha sound right to you on a block that was not decked any help would be appreciated thank you in advance. Your friend from Louisiana Rick 427

Looking too build a 421 ls would you be interested in doing it? I live in Worcester ma.

Too much talking, couldn't finish watching.