Head Choices??? Experts chime in
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TECH Resident
Joined: Jan 2003
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From: AUSTIN TX
Originally Posted by tillery
I have the ls6 2.5 on my car with an MS3 cam(2.04int 1.57exh) -4cc mahle pistons. I going to mill mine for more compresion. there is quite a few people in San Antonio running thus set-up with awsome results. A shop there does a lot of work to F-bodies and vettes with TSP component, just saying if you want to get real world results from people close by. I live in Austin and race in Seguin when I'm at home.
Thread Starter
TECH Resident
Joined: Jan 2003
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From: AUSTIN TX
TTT anyone have anything else to add... either in favor of the 5.3's or 243's. I am off tomorrow so if TSP does not see this post by then I will call them and try to find out the answers to these nagging questions.
Thread Starter
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Joined: Jan 2003
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From: AUSTIN TX
Still undecided on this head choice as are numerous others it seems (from other post I have seen asking a similar question). So I figured I would ressurect this thread in hopes of getting some input from someone at TSP. Also would like to hear from anyone else with any other input whether agreeing to or disputing those stated previously in this thread. Thanks
i think what it comes to is this
you take the 5.3l heads and the 243 castings mill both to get the dcr you want the 243 heads will have more ptv clearance with the same cc chambers.
now depending on the cam size, smaller cam would get the 5.3's and a bigger cam would get the 243's
btw what cam are you going with
you take the 5.3l heads and the 243 castings mill both to get the dcr you want the 243 heads will have more ptv clearance with the same cc chambers.
now depending on the cam size, smaller cam would get the 5.3's and a bigger cam would get the 243's
btw what cam are you going with
Thread Starter
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Joined: Jan 2003
Posts: 855
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From: AUSTIN TX
Originally Posted by bad6as
i think what it comes to is this
you take the 5.3l heads and the 243 castings mill both to get the dcr you want the 243 heads will have more ptv clearance with the same cc chambers.
now depending on the cam size, smaller cam would get the 5.3's and a bigger cam would get the 243's
btw what cam are you going with
you take the 5.3l heads and the 243 castings mill both to get the dcr you want the 243 heads will have more ptv clearance with the same cc chambers.
now depending on the cam size, smaller cam would get the 5.3's and a bigger cam would get the 243's
btw what cam are you going with
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227/232 .639/.595 109+0
IVO-5
IVC-43
EVO-45
EVC-7
ECL-109
overlap-12
with a stock gm mls gasket .052 and 61cc chanbers i get
SCR-11.13
DCR-8.6
with 93oct i dunno if i could pu it at all
btw what is the quinch for that?
any ptv problems with the prc 243 heads?
227/232 .639/.595 109+0
IVO-5
IVC-43
EVO-45
EVC-7
ECL-109
overlap-12
with a stock gm mls gasket .052 and 61cc chanbers i get
SCR-11.13
DCR-8.6
with 93oct i dunno if i could pu it at all
btw what is the quinch for that?
any ptv problems with the prc 243 heads?
Last edited by bad6as; Jan 22, 2007 at 05:38 PM.