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Mast Motorsports builds Ultimate NA LS Pump Gas Street Motor (870hp/665tq)

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Old 10-21-2010, 01:10 PM
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Originally Posted by Beaflag VonRathburg
Cary,

What is the advantage of using those ports in a smaller casting? Are you using more of a traditional say LS7 offset rocker setup like the other heads?

The only truthful reply to that is that before I started working on the merger with Mast, They requested a cylinder head that was a canted valve config that would fit their valve cover. The valve positioning moved slightly on the exh side and we made it specifically for them. Now we have two.

It is very close to the Mozez head. It requires shaft rockers, no LS7 rockers.

cary
Old 10-21-2010, 04:24 PM
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Originally Posted by MOZEZ
The only truthful reply to that is that before I started working on the merger with Mast, They requested a cylinder head that was a canted valve config that would fit their valve cover. The valve positioning moved slightly on the exh side and we made it specifically for them. Now we have two.

It is very close to the Mozez head. It requires shaft rockers, no LS7 rockers.

cary
Cary,

I noticed the exhaust side is splayed a couple extra degrees over the MOZEZ heads. The current head just appears to be a tamed down, more street friendly version of the MOZEZ head. How much of a performance difference is there between the two? What would the MOZEZ head have done on this engine with that and the cam being the only variables swapped?

I remember the old LSx engine you guys did with the two carbs and original et canted valve heads.
Old 10-21-2010, 10:19 PM
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Very nice numbers!!!! That's just crazy. Very impressive guys. Let's see some track numbers.
Old 10-21-2010, 10:33 PM
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awesome results
Old 10-31-2010, 09:50 AM
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It seems the limits of the stock style intakes has pretty much been reached and ITB are the way to get a signigicant bump in hp and still remain streetable.
Old 10-31-2010, 10:59 AM
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very nice numbers.
Old 10-31-2010, 02:18 PM
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Awesome hp and tq especially on 93 pump gas
Old 10-31-2010, 03:22 PM
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From reading about the Harrop ITB intake it sounds like they are a major PITA to tune and require many many hrs of tinkering just to setup them up and get them optimized.

How much is the Hillborn ITB setup? What material is it made out of?

Pictures please....

Last edited by gnx7; 10-31-2010 at 03:29 PM.
Old 11-25-2010, 09:55 PM
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This thread had a whole bunch of win at first and then once you hit page two, complete let down sinks in and fills you up with sadness. We need pics and more info from such a great performing combo.
Old 12-05-2010, 10:22 PM
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Nice results!
Old 12-06-2010, 06:07 PM
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What can i say that has not already been said on this crazy build. I would love that in my street car..
Old 12-07-2010, 08:09 PM
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Now all you guys need to do is bump the compression run our other pump gas E85 and we can boast about you 1st NA engine to reach 2hp per cubic inch engine. Thats what i want to see. Anyone else.
Old 12-08-2010, 03:06 AM
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cant wait to see pics of this motor thats a nice number for a 466
Old 03-04-2012, 07:51 AM
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Very nice numbers. Tried to find dyno on Facebook, where is it?
Old 03-04-2012, 11:48 PM
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It was probably lost in 7 versions of facebook ago....
Old 03-12-2012, 10:00 PM
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Originally Posted by BLWN1
It was probably lost in 7 versions of facebook ago....
lol. great engine i too would like to see e85 and 2hp per cubic inch. And h/I pics and detaiils. nice work.
Old 04-07-2012, 08:30 PM
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Im interested in whats the closest to 2hp per inch someones got. Being n.a. e-85.



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