I used to work at a salvage yard that also sold parts and what they used to clean aluminum heads with was this stuff called aluma-clean. Unless this is at home I would suggest B-12 Chem-tool which works really good at breaking down carbon buildup. Then use brake cleaner to rinse because brake fluid doesn't leave any residue.
yes, iron block w/ aluminum heads.... ls1 has aluminum block and aluminum heads
no oxidization
Aluminum
Heads are aluminum and block is cast iron
mop and bucket
There are a variety of places where one can purchase SBC aluminum heads. One can purchase SBC aluminum heads online on the eBay website, and other retailers as well.
The 4.0 liter OHV has cast iron heads , the 4.0 liter SOHC has aluminum heads
Depending upon use you should clean them one every four months or whenever you have trouble with them.Rubbing alcohol and a q tip would clean the heads if they are accessible.
With iron heads, the stock spec for iron intakes of 30ft-lb should do. If you are going into aluminum heads, you do not want to go very tight, maybe 20ft-lb or so. AFR recommends just making them "snug" when installing an intake and exhaust headers on their aluminum small block heads.
Engine heads are constructed of iron or aluminum.
To remove both oil and grease you should clean aluminum with a solution of water and mild dish washing liquid. Generally, aluminum items around your home just need a good periodic dusting with a soft, clean cloth, to keep clean and shiny. Thanks!
The 3.1 L V-6 engine in your Chevy Corsica Has Aluminum Heads