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PRC 237cc heads for ls1?

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Old Oct 6, 2014 | 01:08 PM
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Default PRC 237cc heads for ls1?
So a buddy of mine has a 408 built by Texas speed and is switching his setup. So I can get a killer deal on his PRC 237 heads and Tsp 248 254 cam. My question is, can I even run those on my ls1? Will they work? Has anybody done this? Thanks in advance!!
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Old Oct 6, 2014 | 02:18 PM
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No, you better not use them, just sell them too me, lol
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Old Oct 6, 2014 | 02:25 PM
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Lol I was waiting for someone to say that
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Old Oct 6, 2014 | 02:28 PM
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Those won't work on your ls1. Needs a 4.00+ bore to work.
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Old Oct 6, 2014 | 02:31 PM
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Okay thank you sir! And what is mine exactly?
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Old Oct 6, 2014 | 02:54 PM
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The ls1 is a 3.898 bore size stock
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Old Oct 6, 2014 | 02:55 PM
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Okay thank you sir! I appreciate it!
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Old Oct 6, 2014 | 04:52 PM
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Old Oct 7, 2014 | 09:45 AM
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What does he want for the heads? One of mine cracked and I need a new one.
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Old Oct 7, 2014 | 10:21 AM
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Originally Posted by Sales2@Texas-speed
Those won't work on your ls1. Needs a 4.00+ bore to work.
Why do they need a 4" bore?
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Old Oct 7, 2014 | 11:11 AM
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Originally Posted by Sales2@Texas-speed
Those won't work on your ls1. Needs a 4.00+ bore to work.
Originally Posted by KCS
Why do they need a 4" bore?
Could it be due to the 2.100" intake valve?
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Old Oct 7, 2014 | 11:58 AM
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Originally Posted by R6cowboy
Could it be due to the 2.100" intake valve?
No. 2.100"/1.60" valves would fit unless the valve locations have been moved. But then the question is why do that?
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Old Oct 7, 2014 | 12:52 PM
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Originally Posted by KCS
No. 2.100"/1.60" valves would fit unless the valve locations have been moved. But then the question is why do that?
Curious too.
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Old Oct 7, 2014 | 02:24 PM
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Originally Posted by Sales2@Texas-speed
Those won't work on your ls1. Needs a 4.00+ bore to work.
Originally Posted by KCS
No. 2.100"/1.60" valves would fit unless the valve locations have been moved. But then the question is why do that?
Would the 4.00"+ bore be more of a recommendation then a requirement?
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Old Oct 8, 2014 | 06:02 PM
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The combustion chamber is probably too big. Usually this just means you need to run a head gasket for a larger bore such as an ls2 head gasket. Otherwise the head gasket ends up being directly exposed to the combustion charge.
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