Mast Black Label heads - Share your experience
Thread Starter
Drifting
Joined: Apr 2008
Posts: 1,353
Likes: 105
From: Mesa AZ
Mast Black Label heads - Share your experience
Figured I would start a new thread for this:
Car is an LS3, thinking about doing a head swap for Mast Black Label Med. Bore. Anybody done this swap on LS3 or similar bore/ci engine? They are saying 50-75 HP with the swap with my current setup.
Car is an LS3, thinking about doing a head swap for Mast Black Label Med. Bore. Anybody done this swap on LS3 or similar bore/ci engine? They are saying 50-75 HP with the swap with my current setup.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Did you see the comparison test in Hot Rod magazine last month? These heads seemed to do well on the 408ci with a big cam.
Are you also changing the cam?
Are you also changing the cam?
Thread Starter
Drifting
Joined: Apr 2008
Posts: 1,353
Likes: 105
From: Mesa AZ
227/231 .613/.617 115+3 LSA cam
Headers
CAI
3.42 gears
Last edited by ktoonsez; Jan 30, 2011 at 10:33 PM.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
The article showed all the heads were tested incredibly close despite a wide range of port and CFM.
The Mast did have the most peak torque but only a little. The ProComp posted the highest peak hp with the smallest ports and lower CFM.
I made a bar chart comparing the different heads in this test because I had difficulty figuring out the results. I still don't understand why they all delivered similar hp and tq. Here is that thread. http://forums.corvetteforum.com/c6-t...head-test.html
I wish they had simply used a LS3 with a medium size cam like most of forum members use.
The MAST was the only square port head in the test. The rest were cathedral ports because the 408ci bore. They did not test a stock L92 head.
If the MAST does deliver a 50hp on a stock LS3 heads+cam, I would like to see it.
The Mast did have the most peak torque but only a little. The ProComp posted the highest peak hp with the smallest ports and lower CFM.
I made a bar chart comparing the different heads in this test because I had difficulty figuring out the results. I still don't understand why they all delivered similar hp and tq. Here is that thread. http://forums.corvetteforum.com/c6-t...head-test.html
I wish they had simply used a LS3 with a medium size cam like most of forum members use.
The MAST was the only square port head in the test. The rest were cathedral ports because the 408ci bore. They did not test a stock L92 head.
If the MAST does deliver a 50hp on a stock LS3 heads+cam, I would like to see it.
Last edited by Mez; Jan 31, 2011 at 05:40 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Racer
Joined: May 2008
Posts: 379
Likes: 2
From: Mont Belvieu Texas
A radically different intake design is sorely needed if these high end LS heads are to meet their potential. The FAST 102 is not enough.
Thread Starter
Drifting
Joined: Apr 2008
Posts: 1,353
Likes: 105
From: Mesa AZ
Reason they all showed similar results although they are significantly different in design and flow capability, is because we have gotten to the point where the intake is the restriction and the heads can only make due with the amount of flow that they receive. Had each engine gotten it's own sheet metal intake, the results would be very different.
A radically different intake design is sorely needed if these high end LS heads are to meet their potential. The FAST 102 is not enough.
A radically different intake design is sorely needed if these high end LS heads are to meet their potential. The FAST 102 is not enough.
Good point there, I guess what is nice is that there is more room to grow the cam durations due to the change in valve angle creating more PTV clearance. Still looking for someone that has actually done this. Anyone??
