Mast Motorsports LSX 454 Dyno Numbers and Product Release
08-23-2008, 02:28 PM
#21
TECH Apprentice
Join Date: Oct 2007
Location: Granada Hills, Ca
Posts: 385
Likes: 0
Received 0 Likes
on
0 Posts
I think with 14:1 and more cam, that combo would be over 700hp. 11:1 is still a pump gas motor and to make over 600hp n/a on pump gas is huge, not to mention the 600+ tq. You stick that engine in a heavy *** fbody and it will run in the 10's at over 3200lbs.
08-23-2008, 08:06 PM
#22
TECH Enthusiast
Join Date: Jan 2008
Posts: 625
Likes: 0
Received 0 Likes
on
0 Posts
Those numbers are from an ENGINE DYNO. 600 hp and 600 tq from a 454ci is way LOW. Those are numbers from 7-8 years ago with 427's and 422's. My 2002 LS6 blocked and LS6 ported heads and a stock TB made 490 RWHP, with cats. Problem is all in the top end with that 454ci. No matter how many cubes you have, the hp/tq has come to a screaching halt with that top end. Put a better top end on it and a cam to match and you could see 80-100 more HP/TQ. But its also gonna cost another $4,000 for the heads and depending on what intake/TB, $2,000-$4,000.
08-24-2008, 09:05 AM
#23
TECH Regular
iTrader: (5)
Join Date: Apr 2008
Location: Miami, Florida
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Those numbers are from an ENGINE DYNO. 600 hp and 600 tq from a 454ci is way LOW. Those are numbers from 7-8 years ago with 427's and 422's. My 2002 LS6 blocked and LS6 ported heads and a stock TB made 490 RWHP, with cats. Problem is all in the top end with that 454ci. No matter how many cubes you have, the hp/tq has come to a screaching halt with that top end. Put a better top end on it and a cam to match and you could see 80-100 more HP/TQ. But its also gonna cost another $4,000 for the heads and depending on what intake/TB, $2,000-$4,000.
How mild is the cam in this motor? 623chp is really not very much.... like I asked before, why is it so soft? This motor has the compression, does it just have a stock like cam?
08-24-2008, 12:34 PM
#24
TECH Enthusiast
Join Date: Jan 2008
Posts: 625
Likes: 0
Received 0 Likes
on
0 Posts
A 454ci needs heads that flow 400+ and a sheet metal intake to really make big power. As long as there's a plastic intake on top of it it'll never make big power.
08-24-2008, 09:15 PM
#25
TECH Apprentice
Join Date: Oct 2007
Location: Granada Hills, Ca
Posts: 385
Likes: 0
Received 0 Likes
on
0 Posts
Those numbers are from an ENGINE DYNO. 600 hp and 600 tq from a 454ci is way LOW. Those are numbers from 7-8 years ago with 427's and 422's. My 2002 LS6 blocked and LS6 ported heads and a stock TB made 490 RWHP, with cats. Problem is all in the top end with that 454ci. No matter how many cubes you have, the hp/tq has come to a screaching halt with that top end. Put a better top end on it and a cam to match and you could see 80-100 more HP/TQ. But its also gonna cost another $4,000 for the heads and depending on what intake/TB, $2,000-$4,000.
For what it's worth, my engine made more power than that with 52 less cid. Factory ls2 block, 402", 11:1 compression. TFS Heads with 70cc chambers, victor jr and a carb, with a cam with less than 250 duration and 630 lift, it made 610hp @6600 and 560tq @ 5400 at the flywheel.
that is all irrelevant, because all I was saying is that the 454 sounded like a pretty stout piece
Last edited by Qwiknotch; 08-24-2008 at 09:57 PM.
08-24-2008, 11:24 PM
#27
10 Second Club
iTrader: (10)
Join Date: Feb 2004
Location: Manteca, CA
Posts: 1,212
Likes: 0
Received 0 Likes
on
0 Posts
I know it is from an engine dyno. 600 hp is still respectable in a 454 with heads that aren't that great and a cam that is not that great on pump gas.
For what it's worth, my engine made more power than that with 52 less cid. Factory ls2 block, 402", 11:1 compression. TFS Heads with 70cc chambers, victor jr and a carb, with a cam with less than 250 duration and 630 lift, it made 610hp @6600 and 560tq @ 5400 at the flywheel.
that is all irrelevant, because all I was saying is that the 454 sounded like a pretty stout piece
For what it's worth, my engine made more power than that with 52 less cid. Factory ls2 block, 402", 11:1 compression. TFS Heads with 70cc chambers, victor jr and a carb, with a cam with less than 250 duration and 630 lift, it made 610hp @6600 and 560tq @ 5400 at the flywheel.
that is all irrelevant, because all I was saying is that the 454 sounded like a pretty stout piece
I would not pay to much attention to needadvice, he has a tendancy to think that everyone wants to hear his opinion, when actually no one really cares...
This engine is a great deal, and you can always upgrade at a later date, if you want more power...
Mrs. Azrael
08-25-2008, 05:39 AM
#28
TECH Regular
iTrader: (5)
Join Date: Apr 2008
Location: Miami, Florida
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
I really think MAST motorspors l92 VVT motors are WAY more impressive than this motor. It just seems a bit soft for a 454, but their smaller vvt motors make some DAMN good power. I'm way more impressed with them. This motor probably doesn't have a ridiculously aggressive cam that rattles your teeth out.
08-25-2008, 03:34 PM
#30
TECH Apprentice
Join Date: Oct 2007
Location: Granada Hills, Ca
Posts: 385
Likes: 0
Received 0 Likes
on
0 Posts
Marty, what's the car need? Are you selling it as it looks in the pic? is there any interior in it? 
Give me all the info and I will pass it along to my friends in Cali.
Give me all the info and I will pass it along to my friends in Cali.
454, california, commastmotorsportscom, engine, g8, ls3, lsx, mast, motor, motorsports, packages, performance, sports, turnkey, wanted, williams
