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Old 06-20-2009, 11:04 PM
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Default opinion on heads

i was running 243 heads untill the f* up . . . should i go l92/317's or look another pair of 243's???? im on a budget build . . .

this local guy sells me 317's milled .030 with a valve job . .. . ferrea valves . . for $275 . .what do u think .. .


...open for suggestions . .


im a noob on valves . . .so shine me on valves*
Old 06-21-2009, 05:05 PM
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i belive the l92 supposed to fit on 4.00 bores and up only

and the 317 are the same as 243 with lower compression and better if u going to forced induction (as i heard)

243 are better for n/a

might be wrong lol

Last edited by Ad1; 06-21-2009 at 05:24 PM.
Old 06-21-2009, 05:23 PM
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I would just get the 243s ported and milled.
Old 06-21-2009, 05:48 PM
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Originally Posted by visHous00
I would just get the 243s ported and milled.
agree with u
Old 06-21-2009, 06:14 PM
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whats the differenc in milled and ported 243s with a valve job and the stage 2.5 prcs
Old 06-21-2009, 06:31 PM
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from texas speed site

The PRC Cylinder Heads Feature:

* Brand New GM 5.3l Based Cores
* Smaller Combustion Chambers For 10.75:1 Compression
* Stainless Steel 2.02"/1.575" Valves
* PRC Double Spring Kit Complete With
Springs, Titanium Retainers, Seats, & Seals
* Completely Assembled & Setup To Your Specs!
Old 06-22-2009, 05:39 PM
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so they are basically a dressed up 243 head
Old 07-04-2009, 03:42 PM
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any -b running ferrea valves?
Old 07-04-2009, 04:06 PM
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Check out the livernois 243 stage 1. I had them on my 07 and worked great, they had a great port job
Old 07-04-2009, 04:09 PM
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Check West Coast Cylinder Heads out. http://www.proheads.com/ Contact Richard over there he is a very knowable person on heads.
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