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PRC Cylinder Heads

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Old Sep 26, 2013 | 07:25 PM
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Default PRC Cylinder Heads

I purchased a set of PRC as cast 225 cylinder heads about a couple months ago. I am still ordering parts to put the new head and cam package together. My question is the 225 as cast is a 6 bolt head. I didn't realize this when I ordered them. I know I am being picky but I don't want a couple extra bolt holes on either side of my engine bay and are these going to be okay to run this way if needed. might seem like a silly question but just wondering. I have seen pictures of these were the casting isn't drilled for the extra bolts. Wondering if I can get those.
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Old Sep 26, 2013 | 08:47 PM
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Cosmetically speaking they do look weird since most applications don't use
those extra bolt holes but Texas Speed had to keep the casting costs down
by only having one (fits all apps.) kinda part. I'd say if you're not willing to
have a machine shop mill those bosses off which could easily cost a hundred
bucks or so...just bolt em' on and run em' !! Those things WILL make some great power for sure !!
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Old Sep 26, 2013 | 10:15 PM
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Ill trade you for my LS6 2.5 heads if it bothers you that much
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Old Sep 27, 2013 | 08:16 AM
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6 bolt block problem solved.
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Old Sep 27, 2013 | 09:04 AM
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The PRC heads only come in a 6-bolt design, but they are perfectly fine to run on your motor. If you dont want the 6-bolt design then you would have to mill the ends off or switch to a different head.
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Old Sep 27, 2013 | 09:11 AM
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Sounds like a good problem to have if you ask me. Who cares what they look like if they make power. I'm sure everyone on LS1Tech would smear dog **** all over their engine if they knew it would make more power doing so
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Old Sep 28, 2013 | 08:14 AM
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Who sees the engine? You want folks to see your taillights
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Old Sep 28, 2013 | 11:42 PM
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Exactly, we have one of the uglier V8's made compared to all the old school carb'd stuff out there, but it sure does t stop people from retrofitting these motors into just about anything.

Jason
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Old Sep 29, 2013 | 03:32 PM
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Thanks for all the help and comments guys. I am just overly picky. I will come up with a creative way to make them blend in. Thanks
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Old Sep 29, 2013 | 06:34 PM
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Originally Posted by 00ssmg
Thanks for all the help and comments guys. I am just overly picky. I will come up with a creative way to make them blend in. Thanks
Pictures please.
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Old Sep 30, 2013 | 10:50 PM
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I wont be putting the car together until over the winter but when I come up with an idea I will post. I am thinking of just tapping the bolt holes and installing short bolts. This will get rid of the empty bolt hole without having to machine the heads or ruining them if I had a future 6 bolt block. ( a guy can dream right)
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Old Sep 30, 2013 | 10:56 PM
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Originally Posted by 00ssmg
I wont be putting the car together until over the winter but when I come up with an idea I will post. I am thinking of just tapping the bolt holes and installing short bolts. This will get rid of the empty bolt hole without having to machine the heads or ruining them if I had a future 6 bolt block. ( a guy can dream right)
Just leave them alone. If you ever decide to sell them and move on, the buying appeal will be lost if you 1. either shaved them off or 2. Modified them in any way! Even tapping them is ruining the eccentricity of the bolt hole. Big turn off to potential buyers. I know I would....
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Old Sep 30, 2013 | 11:02 PM
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the extra bolt holes sit below the headers - you dont ever notice them.
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Old Oct 1, 2013 | 07:25 PM
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that's a very good point. I never though about the holes being below the headers. good thinking .thanks for the help again guys
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