At least you have a good block and your sticking true to the car with one of the best motors of all time.

Glad I caught your symbol on action auto or I would be missing out on all the good things I am going to get to see now. 🤜🤛

Put the handle of the breaker bar to the rear of the engine and towards the passenger side when taking off the front bolts and pull the handle from the driver's side and brace against the block

I have a 1976 firebird project car and it had a 350 two bbl. that was cracked and my buddy gave me a 400 thin 500557 block and I rebuilt it and it needed boring out and two of the cylinders needed sleeves due to rust. It is .030 over bored with cast stock pistons .010 crank new everything inside the engine and I used the heads from the 350 they were still good I lapped the valves they were 6×4 castings and were used on 350/400. I think it has 8.5:1 compression. The cam is an SUM-2800 which is not all that popular with hot engine builders but it didn't disappoint either. I was surprised especially after replacing those awful log exhaust manifolds with ram air three reproduction exhaust manifolds man it woke up!! It wouldn't stop pulling unless I get off the throttle it would throw a rod if I didn't. I gotta be careful with it now. That cam works great with lower compression low octane and air conditioning in the hottest climate and still won't detonate. High compression is good if you live in a cooler climate and better gas. I'm surprised the block is still holding up I might just need to leave it like it is and find a better block for those high compression heads

Not a good sight, thanks for sharing, all the best to you and your loved ones

Working on a Pontiac here 👍 #traditionalpontiacpowerrules

That’s a great deal, looking for engine for our ‘67 as well. They are getting hard to find. Great video.👍

Pontiac 400 early blocks are hard to find you have a jewel. The 500557 is the only one that is thin and not to be trusted with anything but a low compression stock build. Its okay just get a better crank. Get a 4" lightened forged balanced rotating assembly with forged rods. That will be a big improvement. You don't want those old stock rods anyway they're cast. I just hope the block is okay. A 4" stroker assembly will make it about a 427 cu. in. I like the 4" better than the 461 stroker it makes it a little more rev happy. The 461 needs a strong transmission and rear end otherwise the extra torque will shred it.

Heck of a find, i dont see many of these here. i have grabbed what i could find my way. im finding it hard to build an engine on a budget these days.

My 67 400 tri-power was the fastest car in my hometown back in the 70s

I plan on Reuse my Rods and crank, a torque plate to spec is need when cross hone a Pontiac and no ball hones, clean the casing flash everywhere and clean up the heads carefully, get a solid roller cam, 1.6 rockers, hydraulic lifters, and a front fed 750 Quadra jet for a 67 firebird. Line hone the mains and turn the crank and not sure the numbers on rods, I would knock out freeze plug and clean the water passages. And oil galley plugs wow that was a surprise on crank

GM developed an "improved" nodular iron for crankshafts during 1968. Some late 68 engines may have it, but to be sure, use a 1969 or larger crankshaft, as some 68 cranks were the older, weaker nodular iron. The older nodular cranks are not as strong.

I love that shirt! I will have to get one of those, good morning to you by the way, I should have spit that out first of all

What cam and heads will you be using. Ram air three reproduction exhaust manifolds or full length headers?

Nice ! You should build a small work bench, so car is not one! I know about workspace limits; I had a one car garage for years.

Awesome find. 1967 400 blocks seem to be getting few and far between especially one from a bird originally

First motor I ever owned was a 67 400 with Tri Power off a 66 389. Freshly rebuilt $ 400. Of course that was a very long time ago.

In 1968 GM went to a stronger nodular iron GM had developed for crankshafts, but it may not have made it into Pontiac 400's until late 68, so 69 to 74 400 crankshafts are the best bet for the stronger crankshaft. The 421 and early 428's got Armasteel cranks, which is a different cast iron, with some steel-like properties. It remained for the connecting rods, but didn't have the desired give the forged steel and nodular iron crankshafts have. 428's went to the new nodular iron in mid-68, but some 400's might have been later. The 67 400 cranks are nothing special. The newer nodular iron was specifically developed by GM for crankshafts and does a good job.

Buy once and whine once I always say! Get a forged crank and you will never have a issue ever and those motors are awesome if you stay under the red line of the internals you use. I had a few of the Pontiac 400's and they are torque and power to go I would go with a 400 Turbo Hydramatic and get it beefed up just enough to run what you plan on doing and budget building got me wondering. You can do more than you think with the right budget parts buying.

That's awesome you got a numbers correct engine! Too bad about the crank, wonder what caused that break?

200 bucks for a YT block.....man someone must've needed a hit! That's a lucky find! I bought a pretty much top down 68 YT block 400 15 years ago for $450 and thought I got a deal! YT block 400s are around $1500 on Franks's Pontiac parts....if they have them.

Looks like they ran the original antifreeze from the late 60's with the rust issue.

I was cringing how close that engine stand was only inches from the door when you were trying to break the main cap bolts as the stand was rolling ever so closer to the paint on the car 😲

I’ve got to tear down my ‘69 400 soon, too. Hopefully no surprises in there. Couldn’t find anything on those connecting rod stamps. Didn’t seem to be a factory requirement - wonder if those are aftermarket?

The piston are low compression 72 up

Lil tip , turn the engine on its side so you can push down and the stand won't roll , cool channel

I don't like the chunk of the block missing on the back wall of the lifter valley.

Those main caps torque at 100 ft.lbs. except the rear at 120 ft.lbs..

Over revved it while power jacking what ever the motor was in😢😢

SHOULD HAVE HELD out for 428 engine. REMEMBER the weak links of the Pontiac v8 are the cast rods and oiling system. PLAN on getting a high capacity oil pan and 80 psi oil pump, and a decent aftermarket cam.