454 Torque ratings & sequence for heads

[simplysigns]

Can someone tell the sequence and torque ratings for a 1974, 454, cast iron heads?​

The engine has been overhauled by someone else. And is on a engine stand. But I am taking the heads off because I think there are some metal chips in the cylinders. I was grinding the other day and before I new it. I was shooting the grinder sparks at the engine. Right in the spark plug holes (plugs were not in). Just my luck!!

 

[doonjumper]

Have you thought about just blowing compressed air into the cylinders that you think may have been contaminated? I would think that that would work. I would do it that way for a good minute or so every time the compressor built up max pressure. The debris that results from grinding aren't that large and would more than likely blow out IMO. I'm no expert for the record but I don't see why that wouldn't work. I mean I figure if by chance debris did make it into the cylinder then the forced air into them when definitely be able to get it out right? The forced air will create a drawing action out of the spark plug hole cylinder thus basically sucking the debris out. Do what you feel will give you the most peace of mind at the end of the day.

 

[k30bb468]

Here ya go
Chevrolet Big-Block Iron Engines
ComponentTorqueCamshaft Sprocket Bolts20 ft. lbs.Cylinder Head BoltsLong70 ft. lbs.Short70 ft. lbs.Cylinder Head StudsLong65 ft. lbs.Short65 ft. lbs.Exhaust Manifold20 ft. lbs.Flywheel Bolts60 ft. lbs.Front Cover Bolts75 inch lbs.Intake Manifold25 ft. lbs.Main Bearing BoltsInner110 ft. lbs.Outer110 ft. lbs.Oil Pan Bolts165 inch lbs.Rocker Arm Studs ( All )50 ft. lbs.Rod Bearing Bolts ( 7/16in.)67-73 ft. lbs.Valve Cover Bolts25 inch lbs

 

[Yukon Jack]

You could also hook a shop vac up and put the hose on the exhaust ports. Can't imagine much could have gotten in the cylinders.

 

[BAJA_BLAZER]

Magnet - see if you get anything out of the sparkplug holes worth worring about. Last thing I would do is pull the heads off a fresh build. There would have to be some major chunks in there to cause problems. Small particles will just blow out the exhaust valves.