LS3/L92 Heads on a boosted application

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Sep 28, 2012 | 03:05 PM

brians91formula

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From: NH

LS3/L92 Heads on a boosted application

Does anyone have experience with the LS3/L92 heads on a boosted application? How thick is the deck? Do you guys think they would be ok at 10psi through a procharger on an LS3 416 stroker?

Sep 28, 2012 | 05:27 PM

N2OBaby

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I don't know from experience but I've heard a Blower Type cam + LS3 heads on an LS9 make 50-70 HP(per GMHTP).

Sep 28, 2012 | 06:45 PM

MUSTANGBRKR02

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From: Maine

Those heads would work fine for that. I think cj454 or something ran like 25lbs through the l92 style heads. I know it's a white SS but I can't remember his SN on here.

Sep 28, 2012 | 06:59 PM

Beanslsxnova

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From: waldorf,md

A buddy of mine has a 370 with l92's and a pat g custom cam. On 18lbs from an s480 it made 800+ whp and has had no issues what so ever in the 3000+ hard miles he's put on It

Sep 29, 2012 | 08:59 AM

N2OBaby

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Quote:

Originally Posted by brians91formula

Does anyone have experience with the LS3/L92 heads on a boosted application? How thick is the deck? Do you guys think they would be ok at 10psi through a procharger on an LS3 416 stroker?

Who is building your stroker?

Oct 1, 2012 | 08:24 AM

brians91formula

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From: NH

Quote:

Originally Posted by N2OBaby

Who is building your stroker?

Most likely Virgina Speed or Texas Speed. Why do you ask?

Oct 1, 2012 | 09:32 AM

Louis

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Go with an lsa head. Much better pieces. L92/ls3 heads are garbage. They will seal initially, but once they push water, they will never seal right again.

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Oct 1, 2012 | 02:59 PM

L92 fox

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And I second LSA heads. They are cheaper and made of a stronger material than the ls3/l92 heads.

Oct 1, 2012 | 03:09 PM

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Atomic

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I push 20+ on my L92s...the LSA heads are better though

Oct 1, 2012 | 05:09 PM

#11

N2OBaby

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Quote:

Originally Posted by brians91formula

Most likely Virgina Speed or Texas Speed. Why do you ask?

Curiousity.

+2 for AES.

Oct 2, 2012 | 10:05 AM

#12

brians91formula

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From: NH

Quote:

Originally Posted by N2OBaby

Curiousity.

+2 for AES.

I don't like the idea of an iron block. Not sure how much a forged LS3 stroker would cost through them. Maybe i'll toss them a call.

Oct 2, 2012 | 10:12 AM

#13

Sweet_SS

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I'm on an LS3 with LQ cast iron block and L92 heads. I'm running 226/232 115 LSA w/ .563/ .574 lift. Car runs great and spools damn quick.

Oct 2, 2012 | 01:04 PM

#14

blake b

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From: KCMO

I'm running a set of WCCH Stage 3 L92s. I made 803/825/818rwhp on three dyno runs yesterday on 16psi with an LS3 based 377 and a vortech Ysi. Worked fine for me.

Oct 3, 2012 | 05:21 AM

#15

BAKED

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I made 964rwhp through a stalled auto on a set of stock l92's and never pushed any water. 5 layer GM MLS gaskets and ARP bolts, not studs...

Oct 3, 2012 | 06:03 AM

#16

Bob@BruteSpeed

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Quote:

Originally Posted by brians91formula

Does anyone have experience with the LS3/L92 heads on a boosted application? How thick is the deck? Do you guys think they would be ok at 10psi through a procharger on an LS3 416 stroker?

At 10 psi you shouldn't have any problems at all with the LS3/L92 heads. Bob

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