INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

stock 243's or stock 317's

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Old Nov 4, 2006 | 08:12 PM
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Default stock 243's or stock 317's

What set of heads flow better out of the 2 of them..also does anyone have flow charts for them.

Thanks JOHN
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Old Nov 4, 2006 | 08:19 PM
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The 243s and the 317s are going to flow close to the same but the 243s are going to bump your CR up nice and will net a nice gain. Go with the 243s if you can swing em. BTW Patriot sells teh bare castings for like 350 a set.
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Old Nov 4, 2006 | 08:41 PM
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If you going with N.A. then go with 243,
or I would stay with ported 317 for Boost ready!!
Can't wait to get my Boost. I think My WCCH will make a lot of diifferent. once I get boost. it's still awesome at top end. need more low end power.
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Old Nov 4, 2006 | 08:44 PM
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Thanks.. I ahve my 317's out getting worked rite now, but I think the one might be cracked and am having it pressure tested , and I see that the 243's are cheap.. So I gues we will see. what kind of comp bump would it give me.. again thanks
JOHN
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Old Nov 4, 2006 | 09:00 PM
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bout a point
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Old Nov 4, 2006 | 09:12 PM
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Originally Posted by 1slow01Z71
BTW Patriot sells teh bare castings for like 350 a set.
Last time i checked, they were about 425 from patriot.

Last edited by FarmerBeau; Nov 4, 2006 at 09:20 PM.
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Old Nov 4, 2006 | 09:52 PM
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so are the 243s the LS6 head???? sorry for the dumb ???
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Old Nov 4, 2006 | 10:16 PM
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Originally Posted by Grumpy4.8
so are the 243s the LS6 head???? sorry for the dumb ???
Im afraid so....
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Old Nov 4, 2006 | 10:31 PM
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Originally Posted by FarmerBeau
Last time i checked, they were about 425 from patriot.
Either way still a damn good deal
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