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PRC Aftermarket Casting 250cc LS3 Heads Shipping!

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Old 11-11-2011, 09:05 AM
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Default PRC Aftermarket Casting 250cc LS3 Heads Shipping!

Guys we're shipping the new PRC aftermarket casting LS3 heads! Here's the info:

PRC Aftermarket LS3 250cc CNC Cylinder Heads
base price $2,199.99
item# 199-PRCLS36B250 Previous Up Next"

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All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology!

PRC's aftermarket casting LS3/L92/L99 cylinder heads come standard with the following options:

NEW PRC 13-Degree Valve Angle LS3 Castings
Improved Piston-to-Valve Clearance For Extra Compression & Larger Camshafts
Smaller Than Stock Intake Port Volume For Improved Port Velocity
Manley Stainless 2.165" Intake, 1.60" Exhaust Valves
Your Choice of Spring Kit
Completely Assembled and Milled to Your Specifications
60-68cc Chambers

All PRC cylinder heads are extensively researched and tested. The all-new PRC aftermarket casting LS3 cylinder heads are designed to flow like a ported casting while keeping the port sizes smaller for improved port velocity. The result is a cylinder head that is over 10cc's smaller than a stock GM LS3 port and moves more air than a ported GM casting! These heads show dyno-proven 40+HP gains over stock 6.2L cylinder heads! The flow data below shows the superior performance of the PRC LS3 and L92 cylinder heads!

The all new PRC aftermarket casting LS3 heads are the perfect option for stock cube LS3/L99 & L92 engines looking for the most powerful LS3-style cylinder heads that we offer. Engine dyno testing has shown big power gains across the entire RPM band compared to even the best ported stock GM castings that we have tested!

The 13-degree valve angle will allow for the ability to run more compression and larger camshafts thanks to an additional .040" better piston-to-valve clearance!!









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Old 11-11-2011, 11:34 AM
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I can't wait to get this short block done! I will be using these heads under some decent boost on a 364 ci motor. We will see what it can do.

I will be calling TSP for some main studs. Everybody is on back order for them, Summit and Jegs.
Old 11-11-2011, 12:03 PM
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Originally Posted by 01 blue ss
I can't wait to get this short block done! I will be using these heads under some decent boost on a 364 ci motor. We will see what it can do.

I will be calling TSP for some main studs. Everybody is on back order for them, Summit and Jegs.
We've got main studs left in stock right now...but hurry, they are going fast and like you said, I am told they are back-ordered elsewhere!
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Old 11-11-2011, 01:14 PM
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Originally Posted by Matt@Texas-Speed
We've got main studs left in stock right now...but hurry, they are going fast and like you said, I am told they are back-ordered elsewhere!
Good. I'm on the web now so I'm ordering them right now.
Old 11-11-2011, 07:51 PM
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anyone using these yet ? any reports on how they perform.. im heavly considering these because i think the theory is simular to the well known well performing AFR 205cc
Old 11-12-2011, 08:35 PM
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Anyone I have mine on order!!!
Old 11-21-2011, 11:16 AM
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will have mine on wednesday and will dynoing once i get it back and post results hopfully next week....
Old 11-22-2011, 09:46 PM
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got heeeem!!!!!!!!
Attached Thumbnails PRC Aftermarket Casting 250cc LS3 Heads Shipping!-img_1259.jpg   PRC Aftermarket Casting 250cc LS3 Heads Shipping!-img_1261.jpg   PRC Aftermarket Casting 250cc LS3 Heads Shipping!-img_1265.jpg  
Old 11-23-2011, 10:02 AM
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Cool! I'm glad they arrived in good shape! let us know if we can help with anything during the install or otherwise!
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Old 11-23-2011, 11:05 AM
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will do and will have them on hopfully early next week with results!!!!!
Old 11-23-2011, 06:59 PM
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Looking forward for the results, they look like some real nice pieces!
Old 11-26-2011, 09:42 PM
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I'm on the fence until I see dyno numbers but the smaller intake runners sure makes more sense for more power over the entire power band. I'm ready to pull the trigger and these soon.

Good luck with Dyno!!!!!
Old 11-27-2011, 07:52 AM
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Old 11-27-2011, 08:38 AM
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since they are aftermarket castings were the deck plates made thicker for higher horsepower apps? I see they are six bolt so im sure they would be.

My head was set on afr's 225's or something like that but these are 400 bucks cheaper and i could just convert to ls3 heads for that price.

Also, by chance could i order a set without springs? I have two sets of your prc springs already

Last edited by BLINGOLE; 11-27-2011 at 08:43 AM.
Old 11-27-2011, 10:55 AM
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I believe they come with 3/4" decks.
Old 11-27-2011, 10:56 AM
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I believe they come with 3/4" decks.
Old 11-27-2011, 09:42 PM
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Well I dropped the car off today and have to order new pushrods
Because of the thicker deck ... I will next day the pushrods so I can
Get the car back sooner and will have dyno numbers by the end of
The week!! With my fingers crossed!!!!
Old 11-27-2011, 09:44 PM
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Originally Posted by BLINGOLE
since they are aftermarket castings were the deck plates made thicker for higher horsepower apps? I see they are six bolt so im sure they would be.

My head was set on afr's 225's or something like that but these are 400 bucks cheaper and i could just convert to ls3 heads for that price.

Also, by chance could i order a set without springs? I have two sets of your prc springs already
Yes our PRC aftermarket casting cylinder heads have a thicker deck, and you can order them without the valvesprings. Feel free to give us a call with any questions you have.
Old 11-27-2011, 11:05 PM
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Dang, those are some serious heads. Def consider these for a next 6.0 build.
In for Dyno results
Old 11-28-2011, 12:30 PM
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Would these be any good on a 4.0" bore?


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