SPS LS3 Cylinder Heads - LS1TECH



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SPS LS3 Cylinder Heads

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Old 03-08-2017, 03:43 PM   #1
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Default SPS LS3 Cylinder Heads

Is anyone running these heads? The SPS Haymaker heads look really nice and seem to be the ticket for guys wanting to run smaller ports with increased velocity. Never heard them mentioned on here before.
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Old 03-08-2017, 04:09 PM   #2
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Is anyone running these heads? The SPS Haymaker heads look really nice and seem to be the ticket for guys wanting to run smaller ports with increased velocity. Never heard them mentioned on here before.
Never heard of them at all.

You got a link?

KW
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Old 03-08-2017, 06:11 PM   #3
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Never heard of them either.
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Old 03-09-2017, 07:58 AM   #4
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I found out about them on FB. Here is the full info on these heads:


The LS community has been waiting for someone to come out with an LS3 style head that can flow serious air on the exhaust while keeping the intake port and valve small (well, smaller than stock anyways).

We are proud to announce the release of the SPS Haymakers! What's better than a stock size port with a smaller CSA, smaller valve, and still sees more air than a ported LS3? (This head was not based around flow numbers btw)

.750 deck, 4 and 6 bolt castings available
264cc/106cc
2.125/1.600 (2.165 and 2.200 valve options available)
11* valve angle
Chambers start at 74cc but can milled down to desired volume
Custom stainless valves
Bronze guides (powdered metal guides are available)
Custom billet rocker pedestals

Last edited by KCS; 03-09-2017 at 10:58 AM.
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Old 03-09-2017, 08:11 AM   #5
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Any flow numbers ?
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Old 03-09-2017, 03:24 PM   #6
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......The LS community has been waiting for someone to come out with an LS3 style head that can flow serious air on the exhaust while keeping the intake port and valve small (well, smaller than stock anyways)......

264cc/106cc
2.125/1.600 (2.165 and 2.200 valve options available)
......
Those don't look like "smaller than stock" intake ports and valves to me.....

Now.....these, on the other hand..... --->> https://www.mastmotorsports.com/coll...oducts/ls3-240

IJS.

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Old 03-29-2017, 09:15 PM   #7
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Gavin from SPS is a straight shooter. He is a SAM grad and particular about what he does. His heads are top of the line without a doubt. I know his aftermarket LS7 heads flow 440+ CFM .... made 700+rwhp N/A.
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Old 03-29-2017, 09:24 PM   #8
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Dug up a flow sheet for the Haymaker heads in question, runner is slightly smaller than factory LS3 and the CSA is much smaller, therefore a lot better velocity. They use a smaller valve as well.

Last edited by JohnDaMan; 03-29-2017 at 09:31 PM.
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Old 04-12-2017, 11:07 AM   #9
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Thanks for sharing JohnDaMan. Do you know what casting his LS7 heads are based off of that flow 440+ CFM?
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Old 04-12-2017, 11:10 AM   #10
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Ready to see some real world track results out these heads..... what's the valve angle ?
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Old 04-12-2017, 11:23 AM   #11
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Brodix on the LS7

The Haymakers are 11*
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Old 04-12-2017, 11:28 AM   #12
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Their FB page said they just shipped the first Haymaker heads.
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Old 04-12-2017, 12:29 PM   #13
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Looks like these heads, both the LS3 and LS7 variants, are near the top of the totem pole when it comes to high performance cylinder heads. I'm intrigued by the SPS and CID heads. You don't hear anything about them on this site.
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Old 04-12-2017, 01:42 PM   #14
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I believe he really just started pushing his heads this past year. Hopefully some people will branch out and give them a shot
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Old 04-12-2017, 02:01 PM   #15
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He also offers CNC porting on factory castings.
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Old 04-12-2017, 04:34 PM   #16
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Quote:
Originally Posted by JohnDaMan View Post
Dug up a flow sheet for the Haymaker heads in question, runner is slightly smaller than factory LS3.......
Quote:
Originally Posted by Rise of the Phoenix View Post
Looks like these heads, both the LS3 and LS7 variants, are near the top of the totem pole when it comes to high performance cylinder heads..........
His web site says intake runners are 264cc and the exhaust runners are 104cc.

Both larger than stock.

Also......the advertised intake flow for these heads are at or below the same level as several other aftermarket offerings that have smaller intake ports.

Not sayin' that these aren't good heads.....but lets keep it real.

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Old 04-12-2017, 06:00 PM   #17
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Quote:
Originally Posted by Rise of the Phoenix View Post
Looks like these heads, both the LS3 and LS7 variants, are near the top of the totem pole when it comes to high performance cylinder heads. I'm intrigued by the SPS and CID heads. You don't hear anything about them on this site.
CID LS7 heads complete w/ their intake will set you back around $10k.
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Old 04-12-2017, 06:16 PM   #18
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Are they 6 bolt?
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Old 04-12-2017, 11:45 PM   #19
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They're available as 6-bolt. Gavin is local to me and keeps teasing me with the Haymakers. They're on the to-do list for next winter when I ditch the TSP 5.3s.
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Old 04-13-2017, 08:03 AM   #20
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700+ rwhp on a N/A 441LSX isn't proof enough lol? And that's a hydraulic roller cam too.

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I believe he really just started pushing his heads this past year. Hopefully some people will branch out and give them a shot
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