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flat top 5.3 241s? or 706s pt7675

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Old 09-06-2013, 04:22 PM
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Default flat top 5.3 241s? or 706s pt7675

So i spun a cam bearing on my 2004 5.3 ganna get new cam bearing installed and new crank bearing and polished the crank. and install the gen v floating pin rods and flat top pistions. question is should i stay with the 706 heads the comp will be up and help to spool my pt7675 cea. or throw on a pair of 241 heads i have laying around?
Old 09-07-2013, 03:42 AM
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Anyone come guys?????????
Old 09-08-2013, 01:12 AM
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guess not.....
Old 09-15-2013, 06:12 PM
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I'm asking the same question, I have a 5.3 and want to swap a set of 241 heads also but not sure how much the cr will drop
Old 09-16-2013, 01:50 AM
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I think im just gana go with 317 heads should be around 9.4. 9.5 cr
Old 09-16-2013, 06:55 AM
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Are the 317s going to up the cr or lower it?isnt that a 6.0 head?
Old 09-16-2013, 07:11 AM
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What would be the thought behind putting the 241's on? The amount of air you are flowing is depicted by the turbo, and the such small difference between those heads you'd notice nothing because of the difference, but probably notice it a lot with the compression drop. -Just my opinion. If you drive your car a lot dropping compression sucks.
Old 09-17-2013, 07:13 AM
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Some 706 heads are prone to cracking. When you have the rockers off look for the Castech marking. If you do have it, I wouldn't run them on the rebuilt motor.



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