04-05-2017, 10:04 AM | #1 |
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Join Date: Aug 2010
Posts: 108
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heads
I am gathering parts for my next rebuild . At this time I have 3 sets of cast iron heads . this it a 8ba motor .I have a set of 8cm ,8ba and EAB heads . I need some advise . what set of heads will give me an edge or are they all the same? please advise!
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04-05-2017, 10:23 AM | #2 |
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Location: Marana, AZ.
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Re: heads
EAB is supposed to be the highest compression stock head.
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04-05-2017, 10:26 AM | #3 |
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Re: heads
EAB are a slight improvement over the 8BA but they are close. The 8CM ones have chambers that are a fair amount larger so they are more like 8RT truck heads.
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04-05-2017, 10:37 AM | #4 |
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Re: heads
Don't use the 8cm heads unless you are running a 4" crank. I'm running EAB heads on the 8ba in my '39 p/u and I'm happy with them FWIW.
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04-05-2017, 10:47 AM | #5 |
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Re: heads
Thank you all for your help Semper Fi
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04-05-2017, 08:48 PM | #6 |
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Re: heads
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04-06-2017, 09:46 AM | #7 |
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Re: heads
Now if your going to use a hi lift cam like the L-100, the head will have to be clearanced . Also, regardless of the head you use the piston to head clearance should be .045/.050" to increase the turbulence in the chamber. This will improve throttle response and economy.. Just remember there's a reason why you do things and some of the choices have an affect on other things. There's a differance between building an engine and putting one together.
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04-06-2017, 02:26 PM | #8 |
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Join Date: Aug 2010
Posts: 108
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Re: heads
thank You Ol' Ron I will take your advice to heart . I do have a l-100 cam and a merc crank with .030 over pistons.
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