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Hot Rod tested 8 ported LS3/L92 heads!

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Old 12-10-2010, 05:04 PM   #1
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Default Hot Rod tested 8 ported LS3/L92 heads!

Did anyone see the article in Hot Rod where they tested 6 different ported OEM heads, a Pro Comp head and a Mast head?

In the test was OEM ported heads by LPE, WCCH, SDPC, TEA, Pro Comp, GMPP. There were also aftermarket castings by Pro Comp and Mast.

All tested on a 466 with a PI carb intake, pump gas, hyd roller cam, peak power was 762 hp, the Mast heads were the hands down winner, but also have 12 degree valve angles and 1.8 rockers, as opposed to 15 degree with 1.7 rockers.

It's a good read, check it out.
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Old 12-10-2010, 05:31 PM   #2
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Sounds interesting. Did that just come out?
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Old 12-10-2010, 05:42 PM   #3
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Wonder why PRC wasnt in the game... Id like to see the article and how they all compare.
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Old 12-10-2010, 05:48 PM   #4
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Yes its the FEB 2011 issue. On a side note it was a 468 ci w/12.2 to 1 comp and a comp cam >> 255/271 deg with .624 lift on 115 lsa .It also made 732 with a /FAST 102 intake .
The article also showed where the factory balancer came apart while they where testing at 7,000 rpm.
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Old 12-10-2010, 08:41 PM   #5
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Quote:
Originally Posted by 11SECSS View Post
it was a 468 ci
Sorry, yes, 468, 4.185" bore x 4.25" stroke

The spread between the best and worst of the ported OEM heads was 8 hp, or about 1%, that seems close to the repeatability of the dyno to me.
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Old 12-11-2010, 02:34 AM   #6
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Read the last Hot Rod article about the cathedral port heads on 408, good comparison.
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Old 12-11-2010, 10:54 AM   #7
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I found the first comparison to be a bust. With the 408 restricted by the fast there was very little difference in horsepower among the various submisions. The highest performing heads were the couple that had a slightly smaller combustion chamber. However, this go-round HRM upped the ante and tested the heads with a single plane intake. They essentially removed the restricter plate from the motor. This allowed the aftermarket heads to shine over the ported castings. It would have been interesting to have seen how the cathederal heads performed with a supervictor. Likewise, I would guess that the ported LS3's would have performed closer to the Mast heads had they all been tested with the Fast 102 this time.

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Old 12-11-2010, 11:09 AM   #8
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anyone have a link to the hotrod ls3 head test?
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Old 12-11-2010, 11:29 AM   #9
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Quote:
Originally Posted by 1slow01Z71 View Post
Wonder why PRC wasnt in the game... Id like to see the article and how they all compare.
+1 on this one, especially sinc I have a set of ported PRC L92's waiting to go on my motor.
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Old 12-11-2010, 02:12 PM   #10
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Quote:
Originally Posted by 1slow01Z71 View Post
Wonder why PRC wasnt in the game... Id like to see the article and how they all compare.
I bet they would be in the 8hp spread.

That being said, go with the most budget head that fits your applications needs.
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Old 12-11-2010, 03:03 PM   #11
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As long as Richards heads arent way behind comparable heads Ill always use WCCH for my ported head needs. He has treated me great every time Ive bought something from him, and taken all the time I needed to answer any questions Ive had. Best customer service Ive ever had the pleasure of dealing with.
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Old 12-11-2010, 03:48 PM   #12
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I can only find the catherdral port head article here http://www.hotrod.com/techarticles/e...est/index.html
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Old 12-11-2010, 04:05 PM   #13
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They won't put this online for a little while...
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Old 12-11-2010, 07:54 PM   #14
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Quote:
Originally Posted by 1slow01Z71 View Post
As long as Richards heads arent way behind comparable heads Ill always use WCCH for my ported head needs. He has treated me great every time Ive bought something from him, and taken all the time I needed to answer any questions Ive had. Best customer service Ive ever had the pleasure of dealing with.
Richard is definately a class act all the way around! My heads won't go to anyone but WCCH......
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Old 12-12-2010, 06:10 AM   #15
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Quote:
Originally Posted by ramairws6 View Post
Richard is definately a class act all the way around! My heads won't go to anyone but WCCH......
Good move...
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Old 12-12-2010, 09:47 AM   #16
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From that article, I didn't think that the two GM production heads would perform that great, sorry for anyone who hasn't seen the article yet.
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Old 12-12-2010, 10:47 AM   #17
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Sorry guys we were trying to get the new prc aftermarket casting head there and didn't make it.
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Old 12-12-2010, 10:50 AM   #18
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Quote:
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richard is definately a class act all the way around! My heads won't go to anyone but wcch......
+++1!!!
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Old 12-12-2010, 10:54 AM   #19
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From that article, I didn't think that the two GM production heads would perform that great, sorry for anyone who hasn't seen the article yet.
Are these your thoughts, or observations?
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Old 12-12-2010, 11:15 AM   #20
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I just bought that magazine yesterday. I bought it because on the cover it had "america's hottest engine swap" being the LS series of motors. I didn't even know that they had a comparison like this in there. Guess I have to get to reading!
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