ZZP aluminum heads!!!!!!
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ZZP aluminum heads!!!!!!
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No thanks. Think of all the cars in history that have head gasket leaks. They have them because the blocks are cast iron, and the heads are aluminum. The two metals expand and retract from heat and cold at different rates.
These are for the hardcore track hound who also installed ARP studs so he can pull his heads 3 times a year to replace the gaskets.
These are for the hardcore track hound who also installed ARP studs so he can pull his heads 3 times a year to replace the gaskets.
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Originally Posted by willwren
No thanks. Think of all the cars in history that have head gasket leaks. They have them because the blocks are cast iron, and the heads are aluminum. The two metals expand and retract from heat and cold at different rates.
These are for the hardcore track hound who also installed ARP studs so he can pull his heads 3 times a year to replace the gaskets.
These are for the hardcore track hound who also installed ARP studs so he can pull his heads 3 times a year to replace the gaskets.
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From: Bolingbrook, IL Location: Clarkston, MI
Originally Posted by OLDsman105
Originally Posted by willwren
No thanks. Think of all the cars in history that have head gasket leaks. They have them because the blocks are cast iron, and the heads are aluminum. The two metals expand and retract from heat and cold at different rates.
These are for the hardcore track hound who also installed ARP studs so he can pull his heads 3 times a year to replace the gaskets.
These are for the hardcore track hound who also installed ARP studs so he can pull his heads 3 times a year to replace the gaskets.
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From: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Yeah, i like the Cast on Cast, no differential in heat disipation between the two materials, makes for happy headgaskets lol
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Would Cometic MLS gaskets help at all between the metal variation between the block and the heads? http://www.zzperformance.com/grand_p...ts1.php?id=102
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There are millions of cast-iron block / cast-aluminum head motors on the road in vehicles driven everyday and they never seem to be blowing head gaskets 3 times per year. How does GM keep the head gaskets sealing on their LQ9 6.0L HO truck engine? Iron block with aluminum heads and 340 hp / 380 lb. ft. of torque and 10:1 comperssion.
My uncle'* GMC Yukon XL Denali has 90,000 trouble free miles on it, and it had Al heads on an iron block. No head gasket problems for him. Maybe that'* just an odd-ball that survives Al heads.
Aluminum heads are excelent for horsepower, and that'* what most on this board what, right? Like an earlier poster said, they cool better and allow higher compression ratios with less knock retard. On top of that, they're lighter. Seems like a good deal to me. Just wish I could afford to put those on my car.
My uncle'* GMC Yukon XL Denali has 90,000 trouble free miles on it, and it had Al heads on an iron block. No head gasket problems for him. Maybe that'* just an odd-ball that survives Al heads.
Aluminum heads are excelent for horsepower, and that'* what most on this board what, right? Like an earlier poster said, they cool better and allow higher compression ratios with less knock retard. On top of that, they're lighter. Seems like a good deal to me. Just wish I could afford to put those on my car.