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Old 05-28-2010, 05:04 PM   #1
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Default PRC 227 Head / Torquer 3 Camshaft Results

Recently installed a set of 227 heads & Torquer 3 camshaft & thought I'd post the sheet. I dont have a baseline before because the car needed additional work before it could be run.
Car has a Dished 6.0l engine so we decided to put the small chamber 227 heads with the smaller chamber option on it to try to bring the compression up a little bit.

Mods Are:

Used 6.0l Engine
PRC 227 Small Chamber Heads (62cc)
Torquer 3 Camshaft
Fast 90mm Intake
Stock MAF
Stock Pulley
Long tubes & exhaust

Enjoy!!
Click the image to open in full size.
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Old 05-29-2010, 11:48 AM   #2
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Big power. I believe it. I've seen similar results with the PRC 227 heads myself.
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Old 05-29-2010, 12:52 PM   #3
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Indeed big power for a stock U/Ds and MAF car. What size headers?

...killer H/C combo anyway!
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Old 05-29-2010, 03:00 PM   #4
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nice results.
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Old 05-29-2010, 05:04 PM   #5
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very nice gotta love the 6.0 tq
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Old 05-29-2010, 11:12 PM   #6
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very impressive what is the cr u ended up with?
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Old 06-02-2010, 08:50 AM   #7
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It's right at 10.8 compression!

The moral of the story is even with the dished piston 6.0L you can make big big power with the right cylinder head!
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Old 06-02-2010, 09:32 AM   #8
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Nice! How are the PRC 227s compared to the PRC LS6 stg 2.5s?
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Old 06-02-2010, 03:45 PM   #9
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I'd expect about 15-20rwhp from the 227's over the Stage 2.5 LS6's on average.
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Old 06-03-2010, 10:48 AM   #10
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Quote:
Originally Posted by Matt@Texas-Speed View Post
I'd expect about 15-20rwhp from the 227's over the Stage 2.5 LS6's on average.
Hs the 227s compare to TFS 215s?
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Old 06-03-2010, 01:25 PM   #11
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Quote:
Originally Posted by 427LS7HCI View Post
Hs the 227s compare to TFS 215s?
I haven't back to back tested those two...I'd expect them to be pretty close, with the 227's about 5hp or so up over the 215's.
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Old 06-03-2010, 02:40 PM   #12
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Quote:
Originally Posted by Matt@Texas-Speed View Post
I haven't back to back tested those two...I'd expect them to be pretty close, with the 227's about 5hp or so up over the 215's.
I would love to see those results...why would you guess the TFS would be less...
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H/C/I 9.82 at 134.8MPH 1.281 60ft DA -500ft Race weight 2950lbs on slicks
Link to get Non A/C ram air http://www.speedinc.com/shop-by-vehi...3-ram-air.html
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Old 06-03-2010, 03:56 PM   #13
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Extra valve and runner size are the two main reasons for that. And although we haven't back-to-back tested it, we have done enough dyno testing on both that we are very familiar with how they work and their usual results.
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Old 06-03-2010, 04:56 PM   #14
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impresive
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Old 06-03-2010, 06:57 PM   #15
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Quote:
Originally Posted by Matt@Texas-Speed View Post
Extra valve and runner size are the two main reasons for that. And although we haven't back-to-back tested it, we have done enough dyno testing on both that we are very familiar with how they work and their usual results.
since when does extra valve size and runner size translate to more hp...I bet Tony at afr would have to disagree too with his little 205s...
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Stock Internal with SS3600 rw 3365lbs
11.558 at 116.24 MPH 1.546 60ft DA -832 11/25/07
Cam Only and SS4000
10.617 at 124.66MPH 1.356 DA -870ft Race weight 3250lbs
H/C/I 9.82 at 134.8MPH 1.281 60ft DA -500ft Race weight 2950lbs on slicks
Link to get Non A/C ram air http://www.speedinc.com/shop-by-vehi...3-ram-air.html
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Old 06-04-2010, 06:39 AM   #16
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Very Nice Power!
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Old 06-04-2010, 09:10 PM   #17
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Quote:
Originally Posted by chrs1313 View Post
since when does extra valve size and runner size translate to more hp...I bet Tony at afr would have to disagree too with his little 205s...
Good point Chris. You can have more flow, bigger runner, and a bigger valve but that doesn't always mean more horsepower, especially if the coefficient of discharge has dropped. I'm not saying that's the case here, but just something to keep in mind.
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Old 06-04-2010, 09:48 PM   #18
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These heads are awesome. Too bad they take so damn long to get. SNL waited damn near 2 months for mine. I just got the car back last weekend.
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Old 08-03-2011, 11:44 PM   #19
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I currently have an ls1.....ms3cam..pace setter longtubes,fast 92,90mm tb,hooker exhaust, and ported ls6 heads...im looking for some heads that will make great power and that will go great with bottle as well.....

What heads will go better with this set up? the prc 215s
or the 227s...expected gains?
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Old 10-11-2011, 02:13 PM   #20
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I know this is over a year old but I figured this would have made more in the 480 range... my 317 headed ls2 made 463.. Wonder if id lose hp buying these heads havent heard much about the prc 227's
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Old 10-11-2011, 02:13 PM
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