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what would be the best upgrade head for a 5.3 ???

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Old 10-23-2013, 08:42 PM
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Default what would be the best upgrade head for a 5.3 ???
I would like to mill them down .30 where my 706's r now...so my cr will b 10.1-10.2..
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Old 10-23-2013, 10:25 PM
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243 or 799's milled .050 with a small as possible hole .040 thick cometic head gasket.

I would check PTV after doing so however I doubt you would have problems with a mild cam.
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Old 10-24-2013, 02:53 AM
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Originally Posted by The stunningman
243 or 799's milled .050 with a small as possible hole .040 thick cometic head gasket.

I would check PTV after doing so however I doubt you would have problems with a mild cam.
I have the GM LS HOT CAM...
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Old 10-24-2013, 06:24 AM
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PTV would be a non-issue I am sure.
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Old 10-24-2013, 05:09 PM
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still gotta check ptv, if mill the heads and use thinner gaskets. but yes.
the 243/799 milled would prolly be the best option for a stock head. unless you get a set of ported 4.8/5.3 heads that flows better than 243/799
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Old 10-24-2013, 06:11 PM
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How about the Patriot heads ???
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Old 10-31-2013, 09:41 AM
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check out trick flow they make a set of heads for the 5.3. I don't know the specs on them but its worth checking into
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Old 10-31-2013, 11:16 AM
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If you are going after market TEA and TSP both sell heads for a 5.3. TSP will even mill to your specs

http://www.totalengineairflow.com/

http://texas-speed.com/c-514-cylinde...ID=0&pagenum=2
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Old 10-31-2013, 07:53 PM
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Thanks a lot
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Old 10-31-2013, 08:05 PM
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I've heard good things about the PRC stage 2.5 5.3L heads that TSP offers. I'm currently looking into a set of the PRC stage 2.5 LS6 heads. Good price too, 1300 maybe 1400 I believe for the 5.3's
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