whats the diff with the casting #'s

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Mar 28, 2005 | 06:00 PM

VaNDaL*SS*

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From: Salinas, CA

whats the diff with the casting #'s

I was just curious my heads are 241, and my new set are 8xx cant remember at the time..whats the diff? thanks

Mar 28, 2005 | 07:18 PM

mrr23

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241 were on corvettes and 01-02 f-bodies 853 are 99-00 heads. both LS1 style.

Mar 28, 2005 | 07:19 PM

02WS6Bird

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What they said ^

Mar 28, 2005 | 07:21 PM

VaNDaL*SS*

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so is there any real difference between the 2? cuz the ones i got from MTI were 853 casting while the ones on my 02 are 241

Mar 28, 2005 | 07:23 PM

f-bodman

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Once they're ported it doesn't matter.

Mar 28, 2005 | 07:24 PM

getlifted

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Quote:

Originally Posted by VaNDaL*SS*

so is there any real difference between the 2? cuz the ones i got from MTI were 853 casting while the ones on my 02 are 241

If they have been ported, then i beleive it doesn't matter. But if they are stock, i think the 241's-01-02 are better heads.

Mar 28, 2005 | 07:25 PM

mrr23

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according to smokemup.com nothing. http://smokemup.com/tech/ls1.php but, from what i've heard, stock vs stock, the 241 flow better. once ported, all bets are out the window.

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Mar 28, 2005 | 09:49 PM

mrr23

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must be a very late 00. because my 00 formula comes with 853 heads.

Mar 28, 2005 | 10:10 PM

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Tech

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I've seen both 241 and 853 on 00 f-cars.

Mar 28, 2005 | 10:10 PM

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Casperws6

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guess i got a lil lucky

Mar 28, 2005 | 10:36 PM

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VaNDaL*SS*

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From: Salinas, CA

also i have heard that right under ur spark plugs on some heads there is a lil triangle. if you have those then your heads are suppose to be stronger. the triangles are a bi-product of how the heads were casted...dunno though thats just something ive heard