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Old 07-29-2004, 02:22   #1 (permalink)
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61cc

My 347 has 63cc chamber heads giving me a comp of 10.2.
If I was to change to AFR185'S with a 61cc chamber, what would my comp be?
Would I notice the difference in performance in going to afr's?
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Old 07-29-2004, 02:28   #2 (permalink)
345kw of V8 Windsor Power
 
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Re: 61cc

Quote:
Originally Posted by 347
My 347 has 63cc chamber heads giving me a comp of 10.2.
If I was to change to AFR185'S with a 61cc chamber, what would my comp be?
Would I notice the difference in performance in going to afr's?
About 10.45
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Old 07-29-2004, 03:28   #3 (permalink)
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Re: 61cc

Go for the 57cc versions. That's what i have got, and my decks are also cut. My comp is 11.1 and runs on pump unleaded with no problems.
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Old 07-29-2004, 04:22   #4 (permalink)
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Re: 61cc

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Go for the 57cc versions. That's what i have got, and my decks are also cut. My comp is 11.1 and runs on pump unleaded with no problems.
Premium 95 or 98?
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Old 07-29-2004, 04:45   #5 (permalink)
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Re: 61cc

Racer and blue66....did you guys use the springs that came with heads?
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Old 07-29-2004, 07:57   #6 (permalink)
Two SC 61's = trouble
 
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Re: 61cc

http://www.rosspistons.com/calculator.php
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Old 07-29-2004, 16:40   #7 (permalink)
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Re: 61cc

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Originally Posted by 347
Racer and blue66....did you guys use the springs that came with heads?
I changed mine. I used springs that matched my cam, but incidently, they were very similar to the ones i took out.

Anyone want a set?
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Old 07-29-2004, 17:32   #8 (permalink)
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Re: 61cc

What valves are you using?
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Old 07-30-2004, 06:47   #9 (permalink)
Two SC 61's = trouble
 
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Re: 61cc

They usually come with Ferera valves...
Here's some info on page 18..Works out compression with size dish piston etc in their kit's...http://www.eaglerod.com/2003Catalog.pdf
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Old 07-30-2004, 17:50   #10 (permalink)
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Re: 61cc

Are they any good?
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