Can anyone i.d. this head casting?

[diesel4me]

I'd agree with that --just because some engines had parts "noted" for failing,does not mean every one of them will fail...

Take the 6.2 diesel as an example--they are "noted" for breaking crankshafts,but there are millions of them still running,and compared to the number that did bust the crank,it is not as common as everyone makes it out to be,really..

I have an '87 6.2 that broke the crank--but it was in a C30 ramp truck,had lots of miles and idling hours on it,and the crank broke while a person was borrowing the truck,not the owner--my guess is he stuffed in it granny low and kept his foot to the floor,and it finished the crank off,not so much it just broke for no good reason..

Lots of 307 and 305 V8's had camshafts lose lobes at low miles--but many of them didn't too...

 

[handloader90]

I do have a question though.

Since these heads are of a thinner casting and have known issues with cracking would it be best to NOT use the heat crossover blocks (the little pieces of sheet metal that you can slide into the manifold gaskets) when I install my Eddy intake and new intake gaskets?

I could care less about discoloration of the intake manifold if it's gonna help the engine out overall.

 

[diesel4me]

I have no idea if using them or leaving them out is the best way to go--up here in cold damp climates I have found the intakes need to heat up in the winter to fend off carb icing and "cold blooded" running issues,but then many trucks came factory with those heat passages blocked off with the restrictors too..

I'd say if the heads haven;t cracked already,they probably wont..but anything can happen ,even to the best quality of parts too..

 

[ChrisPerry]

If your keeping stock carb and choke, they need the passage open to function as intended. I believe the egr needs that passage open also. Now if you take off the egr and run an aftermarket carb with electric choke, blocking it may be an option.

 

[handloader90]

I'm thinking that leaving the "blocks" out of the gasket would allow more space for the heat to move around in lessening my chances of possibly having any issues.

 

[handloader90]

If your keeping stock carb and choke, they need the passage open to function as intended. I believe the egr needs that passage open also. Now if you take off the egr and run an aftermarket carb with electric choke, blocking it may be an option.

It's an Eddy RPM performer that I'm slapping a 1406 style Holley on, 600 or 650 CFM (can't remember, electric choke with vac secondaries.

I'm not running any smog equipment on this truck.

 

[handloader90]

If your keeping stock carb and choke, they need the passage open to function as intended. I believe the egr needs that passage open also. Now if you take off the egr and run an aftermarket carb with electric choke, blocking it may be an option.

Hey @ChrisPerry is your K5 on a show called Truck Night In America?

 

[ChrisPerry]

Lol, nope not mine. Kewl pic though.