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Precision Race Components Cylinder Head Specs & Pics!!

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Old 03-24-2005, 11:57 AM
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Default Precision Race Components Cylinder Head Specs & Pics!!
We just received 10 sets of Stage 2.5 5.3l Precision Race Components Cylinder heads today!! All back orders are now being filled & we have a few sets of heads left for anyone needing a good quality cylinder head & a awesome price!

Here's The Specs On The Heads:
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    Old 03-24-2005, 12:51 PM
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    i have these heads and i love them,im not swinging on anyone's nuts they just flat out make power,they outflowed my patriot stage 2 by over 25cfms.Car picked up 2tenths over patriot heads.
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    Old 03-24-2005, 02:42 PM
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    Thanks for the support Mark!
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    Old 03-24-2005, 02:54 PM
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    What is the p/v clearance with these heads using the TSP 233/239 cam?
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    Old 03-24-2005, 04:22 PM
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    i cant say on tsp part but i bet it would work if u dont have the heads milled .20 like i do
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    Old 03-24-2005, 04:28 PM
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    I will get some clearances numbers together for you hopefully early next week. I also posted results from these heads & a mini stick in the dyno section last week late
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    Old 03-24-2005, 04:34 PM
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    Dammit Jason, if I didn't just dump $3500 in wheels and a minitub kit, I'd be throwing more money at you
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    Old 03-24-2005, 06:28 PM
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    Hey Jason, I've gotten conflicting answers on this one and I'm sure alot of people would like to know. Will there be any clearance problems with these heads and a F13?
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    Old 03-24-2005, 07:33 PM
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    Originally Posted by f-bodman
    Hey Jason, I've gotten conflicting answers on this one and I'm sure alot of people would like to know. Will there be any clearance problems with these heads and a F13?

    What is the LSA of your F13?
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    Old 03-24-2005, 07:58 PM
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    Sorry, it's a 114+4. That's one of the reasons I went with the 114, just a little more room
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    Old 03-24-2005, 08:03 PM
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    I believe the 114 will clear.The 112 is tighter.I would still verify piston to valve clearance.
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    Old 03-24-2005, 08:14 PM
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    Thanks for the reply. I will check it to make sure. Can't wait to see how this combo works out.
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    Old 03-25-2005, 09:23 AM
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    Terry should know, he's installed a seen a set of PRC 2.5s installed with a F13
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    Old 03-25-2005, 11:08 AM
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    I still haven't seen the flow numbers on these heads, or the port volume. Can you let us know, Jason?
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    Old 03-25-2005, 11:37 AM
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    Originally Posted by JakeFusion
    I still haven't seen the flow numbers on these heads, or the port volume. Can you let us know, Jason?
    I had a set flowed locally before I installed them on Mark's car. I posted all th numbers and flow graphs about a month ago. I didn't check runner volume. I'll find the post and link to it.
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    Old 03-25-2005, 11:40 AM
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    Here's a link to where I had them flowed.
    https://ls1tech.com/forums/generation-iii-internal-engine/263891-tsp-stage-2-5-5-3-flows-308-a.html
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    Old 03-25-2005, 01:00 PM
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    Ah, thanks, Gomer!
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    Old 03-25-2005, 06:49 PM
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    Another set is on the way to Gomer right now
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    Old 03-25-2005, 09:42 PM
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    Originally Posted by Jason 98 TA
    Another set is on the way to Gomer right now
    I'll be dynoing and tuning that combo next week sometimes. It is PRC heads with at TSP 225 in a 6 speed car. All bolt ons except an under drive pulley. I'm hoping for some good numbers out of the car, we'll know next week.
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    Old 03-25-2005, 10:01 PM
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    J were you able to next day that set up north?
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