Did you do anything with the trans?

Take it out and change the clutch or anything?

 

Nope. Only a cam and heads.

 

It's not turning over enough to be hitting a valve. It looks to me like it's something in the bottom end. Can you loosen the oil pan? Maybe if you can just lower it a bit and try to turn it over that might help. I know to remove the oil pan you most likely need to pull the engine. You could try pulling the motor mount bolts and lifting the engine as much as possible, that might be enough to pull the pan.

If you did not have this problem before swapping the heads & cam I would vote for having dropped something into the oil pan.

Good luck.

Keep us informed.

 

There are also no heads on for it to be hitting a valve ;-)

I appreciate everyone's input. I think I'll try to lower the pan and see if that helps a little bit.

 

might be a stupid question, but are all your pistons present and connected to a rod? if so do they all go up and down in sequence?

 

Everything goes up and down as needed. The motor ran perfectly fine before this. No marks in any of the cylinder walls.

 

What did I you use to lock flywheel to loose balancer bolt? Maybe this might be the problem.

 

IMO the sound in the video definitely sounds like something in the oil pan getting jammed up against the crank. The "bang" is very solid, hollow, and tinny. Now if that's true it would probably be hitting in the front where the pan is shallow. If it was something in the back where the windage tray is I don't think it would sound that solid.

Have you had the oil pan dropped at all? Not sure if you did the oil pump, but if you loosen all the pan bolts it will drop ~1" or so before it hits the k-member. If you do that and stick your head up from underneath and use a flashlight, you should be able to see anything sitting on the shallow part of the oil pan. Just lower it slow and listen carefully so if there is something in the pan and it starts to roll, you'll hear it.

 

Almost sounds like the oil pick up tube slapping against the steel tray in the oil pan. I'd lower the pan to make sure your pickup tube is still attached to the oil pump.

 

I was just about to say that. Sounds like the counterweight is hitting the windage tray

 

I put the car in 4th gear to remove the crank bolt. I have since removed it from gear to try to get the crank to turn.

I am going to lower the oil pan tomorrow to try and have a look in. It is still attached to the oil pump, that I can see just from having the timing cover off.

Guys, I really appreciate the help. Thanks a ton.

 

Did you remove the lower bolt from the cam retainer plate...?

 

Cam bearing got dislodged during R&R and is binding in the bottom end maybe? longshot.

 

he said it does the same thing when the cam gear is removed, and he spins only the crank.

 

Hate to agree but this is what im thinking. One probably got knocked out and fell down into the bottom end.

 

How can I tell if the cam bearing dislodged? Cam went in fairly smooth. Had to turn it a couple times on the way in, but never felt any resistance.

 

Take the cam back out and get down in their with a flashlight and make sure all your cam bearings are still in their. If ones missing youll know where to find it.

 

Oh man what a bummer, been there.

Long ago had to pull the engine back out, tear it down and find out an oil restrictor (BBO) had backed out somehow…

But the hassle of pulling it was worth the peace of mind. With the engine on the stand, everything goes so much smoother.

 

Well, I got my answer today. Number 7 piston isn't coming back up when I rotate the crank. FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF FF!!!! The car ran perfectly fine before. I didn't touch anything in the bottom end. How is this possible? Was I down a cylinder and never even knew it? The car never acted funny, not once.

 

Crazy stuff man, might be a easy fix at least you fund this before you had it all buttoned up.