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09-09-2008, 12:20 AM
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#1 |
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Registered User
 Join Date: Dec 2007
Location: Modesto, Ca
Posts: 411
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Aluminum heads
Anyone using aluminum heads? What c/r can you get out of them on 87 octane? I have a shot at some zz4 heads and was wondering if I should jump on them.
Jay |
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09-09-2008, 08:46 AM
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#2 |
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Registered User
Join Date: Jan 2008
Location: Chesapeake Beach, MD
Posts: 812
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Re: Aluminum heads
im using AFR 195 64cc heads on my 355. she is ~10.5:1 comp, and i only run 93 in her.
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71 cheyenne lwb 300rwhp best 1/4 time so far 12.8 @103  http://i195.photobucket.com/albums/z...en58/001-2.jpg |
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09-09-2008, 09:01 AM
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#3 |
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Senior Member
Join Date: Apr 2008
Location: Franklinton NC
Posts: 1,309
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Re: Aluminum heads
With aluminum heads anything below 10 to 1 and your good, above that the right cam and tune become more important.If you can get a good deal on them go for it,they will out perform any old head.
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09-09-2008, 04:44 PM
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#4 |
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Registered User
Join Date: Jul 2006
Location: Kunsan AB, South Korea
Posts: 187
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Re: Aluminum heads
I'm running the Edelbrock E-Tec aluminum Vortec heads with 10.6:1 on 91 octane. With the right port, these heads will run 9.5:1 on 87 no problem. From what I know about aluminum is you can go almost one point higher than iron heads on the same octane.
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1971 C-10, 406ci, restoration begun! 406ci sb; zero decked, bored .030, edelbrock aluminum e-tec heads, edelbrock performer RPM intake, comp 268 cam, comp 1.6 pro-magnum roller rockers, MSD street fire HEI, MSD 8.5mm wires, Holley Street demon 770, Hedman LT headers. 10.6:1 compression, Air Ride Tech bags on all 4-corners. |
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09-10-2008, 11:47 PM
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#5 |
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Registered User
Join Date: Dec 2007
Location: Modesto, Ca
Posts: 411
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Re: Aluminum heads
Thanks, all. Think i'm going to go for it.
Jay |
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