302 head exhaust port bulge and a '65 Valiant LH manifold
I sold a '65 Valiant Convertible to a friend of a friend. The new owner is a decent guy but isn't a hardcore car guy like many of us here. He needs a LOT of help to make this car roadworthy.
It sucks for me though....I sold the car because I don't want it at my house anymore. I thought by selling it, I'd be rid of it.
No.
Because I am friends with these guys, I have assumed the role of the "Foreman" on this job.
I bought an '87 904 trans and installed in, put disc brakes and an 8 1/4" axle in place, painted the engine bay and before Christmas, we set the '87 318 in place. They rebuilt the short block but the heads were deemed okay by the machine shop so they were cleaned up and bolted back on.
Anyone here familiar with the heads that have those air injection ports?
The one in the picture above is a cracked 360 head with the same design. The flat part of the exhaust port exit extends below the port and incorporates that small passage that injects air into the exhaust stream in stock applications.
The early A chassis is a tight fit for non stock exhaust manifolds. The original manifolds clear just fine. I had stock manifolds to use but noticed that the #7 exhaust port on the manifold wouldn't lay flat to the head because of the extended pad below the port, like in the picture below:
The fix? Why not take a grinder to the bulge until the manifold clears?
Well, THIS happened. I cut into the water jacket. Again, this here is a cracked 360 head that I tested to see how easy it was to cut through to water. The 318 head was on the engine and in the car. I ended up buying a set of 318 heads from my machine shop guy and swapped them last week.
The damaged head and it's sister are the '302 casting though. I don't know much about the small block stuff but I recall that these had the swirl port chambers and a bit higher compression. Today I took the damaged head to a local guy that does welding jobs. He said he thought he could take a 1/4" welding rod and MIG around it until the hole is filled. He sent me this picture of the completed job:
While I no longer need these heads for the Valiant build, I couldn't just let these heads go to waste. $100 to fix the head seems like a good deal.
I have a 318 here that needs a full rebuild along with a 360 that has no heads. Does anyone use '302 heads on a 360?
I sold a '65 Valiant Convertible to a friend of a friend. The new owner is a decent guy but isn't a hardcore car guy like many of us here. He needs a LOT of help to make this car roadworthy.
It sucks for me though....I sold the car because I don't want it at my house anymore. I thought by selling it, I'd be rid of it.
No.
Because I am friends with these guys, I have assumed the role of the "Foreman" on this job.
I bought an '87 904 trans and installed in, put disc brakes and an 8 1/4" axle in place, painted the engine bay and before Christmas, we set the '87 318 in place. They rebuilt the short block but the heads were deemed okay by the machine shop so they were cleaned up and bolted back on.
Anyone here familiar with the heads that have those air injection ports?
The one in the picture above is a cracked 360 head with the same design. The flat part of the exhaust port exit extends below the port and incorporates that small passage that injects air into the exhaust stream in stock applications.
The early A chassis is a tight fit for non stock exhaust manifolds. The original manifolds clear just fine. I had stock manifolds to use but noticed that the #7 exhaust port on the manifold wouldn't lay flat to the head because of the extended pad below the port, like in the picture below:
The fix? Why not take a grinder to the bulge until the manifold clears?
Well, THIS happened. I cut into the water jacket. Again, this here is a cracked 360 head that I tested to see how easy it was to cut through to water. The 318 head was on the engine and in the car. I ended up buying a set of 318 heads from my machine shop guy and swapped them last week.
The damaged head and it's sister are the '302 casting though. I don't know much about the small block stuff but I recall that these had the swirl port chambers and a bit higher compression. Today I took the damaged head to a local guy that does welding jobs. He said he thought he could take a 1/4" welding rod and MIG around it until the hole is filled. He sent me this picture of the completed job:
While I no longer need these heads for the Valiant build, I couldn't just let these heads go to waste. $100 to fix the head seems like a good deal.
I have a 318 here that needs a full rebuild along with a 360 that has no heads. Does anyone use '302 heads on a 360?
