Mast heads 
Mast heads
Launching!
Joined: Apr 2005
Posts: 229
Likes: 3
From: Frisco TX
MAST and AllPro are probably the 2 best LS7 street heads available but you pay a premium of about $1500-2000 more for what amounts to 10-15 more flywheel HP. If you're going max effort, then yes. If not I'd look at ported LS7 heads, PRC or TFS
Thread Starter
Teching In
Joined: Oct 2015
Posts: 42
Likes: 0
From: USA
So you recommend to go with porting GM heads ??
In that case, you're better off porting the stock LS7 heads. A FAST manifold will still hold the engine back enough that you won't see gains with MAST heads over ported stock heads that justify the additional cost in my opinion.
I sent my heads to Frankenstein and they're absolutely great looking. A friend of mine has FRH ported LS7 heads, btr stage 4 cam, headers, stock intake, throttle body and stock compression and is putting down a little over 590 rwhp
I sent my heads to Frankenstein and they're absolutely great looking. A friend of mine has FRH ported LS7 heads, btr stage 4 cam, headers, stock intake, throttle body and stock compression and is putting down a little over 590 rwhp
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Thread Starter
Teching In
Joined: Oct 2015
Posts: 42
Likes: 0
From: USA
In that case, you're better off porting the stock LS7 heads. A FAST manifold will still hold the engine back enough that you won't see gains with MAST heads over ported stock heads that justify the additional cost in my opinion.
I sent my heads to Frankenstein and they're absolutely great looking. A friend of mine has FRH ported LS7 heads, btr stage 4 cam, headers, stock intake, throttle body and stock compression and is putting down a little over 590 rwhp
I sent my heads to Frankenstein and they're absolutely great looking. A friend of mine has FRH ported LS7 heads, btr stage 4 cam, headers, stock intake, throttle body and stock compression and is putting down a little over 590 rwhp
How much does it coast for porting?
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Launching!
Joined: Apr 2005
Posts: 229
Likes: 3
From: Frisco TX
Ive seen too many people use the MSD and make no more power than a FAST, conversely, Ive seen as may dynos say the MSD made more power but I haven't seen anyone report track times yet.
A ported LS7 (stock intake) is only about 10hp behind a ported FAST but wont cost you $900+.
A ported LS7 (stock intake) is only about 10hp behind a ported FAST but wont cost you $900+.
Launching!
Joined: Apr 2005
Posts: 229
Likes: 3
From: Frisco TX
No experience with it but I know because its Ligenfelter, it would be a proven combo. That said, I'd consult Brian Tooley or Martin Smallwood if yo haven't bought anything.
I have PRC 285's, a ported LS7 intake and 1 3/4 headers with cats and make 580/507 with a very flat torque curve.
I have a friend that has Texas Speeds 265 cnc program on his LS7 heads, a FAST, Katech Torquer and 1 7/8 or 3/4 headers and makes 580/520 so you dont need much to get their and both combos make more than 660hp.
I have PRC 285's, a ported LS7 intake and 1 3/4 headers with cats and make 580/507 with a very flat torque curve.
I have a friend that has Texas Speeds 265 cnc program on his LS7 heads, a FAST, Katech Torquer and 1 7/8 or 3/4 headers and makes 580/520 so you dont need much to get their and both combos make more than 660hp.
Thread Starter
Teching In
Joined: Oct 2015
Posts: 42
Likes: 0
From: USA
No experience with it but I know because its Ligenfelter, it would be a proven combo. That said, I'd consult Brian Tooley or Martin Smallwood if yo haven't bought anything.
I have PRC 285's, a ported LS7 intake and 1 3/4 headers with cats and make 580/507 with a very flat torque curve.
I have a friend that has Texas Speeds 265 cnc program on his LS7 heads, a FAST, Katech Torquer and 1 7/8 or 3/4 headers and makes 580/520 so you dont need much to get their and both combos make more than 660hp.
I have PRC 285's, a ported LS7 intake and 1 3/4 headers with cats and make 580/507 with a very flat torque curve.
I have a friend that has Texas Speeds 265 cnc program on his LS7 heads, a FAST, Katech Torquer and 1 7/8 or 3/4 headers and makes 580/520 so you dont need much to get their and both combos make more than 660hp.
great
TECH Addict
Joined: Jul 2013
Posts: 2,189
Likes: 123
From: Portland, Oregon
I have never heard anything bad about Frankenstein heads and wouldn't hesitate to use stock ls7 heads and intake ported by FRH. With a Martin Smallwood cam, you should be looking at right around 600hp. So much fun...
Thread Starter
Teching In
Joined: Oct 2015
Posts: 42
Likes: 0
From: USA
I'd be glad to provide my services for the camshaft and valve train components!!!
My contact info is in my signature, or you can shoot me a PM on here!
Hope to do business with you in the near future!
My contact info is in my signature, or you can shoot me a PM on here!
Hope to do business with you in the near future!