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PRC 5.3l Stage 1.5 Heads VS. PRC LS6's

This is a discussion on PRC 5.3l Stage 1.5 Heads VS. PRC LS6's within the Internal Engine forums, part of the LSx Technical Help Section category; I was wondering what heads would go better with my combo, PRC's 5.3 Stage 1.5 heads or PRC's LS6 heads, ...

  1. #1
    Member sfletch2000's Avatar
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    86 Buick Grand National
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    PRC 5.3l Stage 1.5 Heads VS. PRC LS6's

    I was wondering what heads would go better with my combo, PRC's 5.3 Stage 1.5 heads or PRC's LS6 heads, they are only fifty dollars in difference. What heads will i see more rwhp along with good power throughout the entire rpm range?
    Pacesetter Headers- ORY
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    407 RWHP 377 Ft./lbs.

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    pewter
    2000 camaro

    Im also wondering the same thing.

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    Member sfletch2000's Avatar
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    86 Buick Grand National
    02 WS6-M6 407 RWHP

    Any Body?

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    Junior Member Twistingreality's Avatar
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    White
    2001 Camaro

    Which ever heads flow the most is what I would look at. Sounds to me like you have enough mods to flow a lot through your heads.

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    Senior Member INMY01TA's Avatar
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    Use the 5.3s if you wanna raise the compression.

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    Member sfletch2000's Avatar
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    86 Buick Grand National
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    Well can i use the 5.3's considering i can only get 91 octane out here and not 93 like you guys back east since the compression will go up.

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    grey
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    calling would be fastest/easiest.

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    Member sfletch2000's Avatar
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    86 Buick Grand National
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    Yeah i sent them an email, i might go with their 5.3L Stage 2.5 actually. They flow 312CFM at 600 on the intake side

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    grey
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    Quote Originally Posted by sfletch2000 View Post
    Yeah i sent them an email, i might go with their 5.3L Stage 2.5 actually. They flow 312CFM at 600 on the intake side
    thats the one ive been eye balling for the last hour or so.

  10. #10
    Member sfletch2000's Avatar
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    86 Buick Grand National
    02 WS6-M6 407 RWHP

    Yeah hopefully i'll see 40 RWHP out of them, my tuner told me he's typically seeing about 40RWHP out of PRC LS6 heads on cars with full bolt ons and they flow about 307CFM at .600 lift. Flow wise they are almost identical.

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