LS1 Z28 vs 5.4L Roush II
12-23-2006, 08:27 PM
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LS1 Z28 vs 5.4L Roush II Z28 - Headers, true duals, intake, M6
Roush - 5.4L from Navigator, stage 3 heads, Lightning intake, built low compression for boost later on, dyno'd 340/340 yesterday uncorrected. Same one that I posted a race with a while back. M5
Roush - 5.4L from Navigator, stage 3 heads, Lightning intake, built low compression for boost later on, dyno'd 340/340 yesterday uncorrected. Same one that I posted a race with a while back. M5
12-23-2006, 08:42 PM
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Who told you that is was a 5.4? The owner? Navigator heads are 4 valve. Lightning intakes are for 2 valves. They won't match up. If that was a true Rousch stage 2 all it was is a 4.6 with a lil eaton blower. 350hp at the crank. Good runs nonetheless. -Mark
12-23-2006, 08:54 PM
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Originally Posted by Bitemark46
Who told you that is was a 5.4? The owner? Navigator heads are 4 valve. Lightning intakes are for 2 valves. They won't match up. If that was a true Rousch stage 2 all it was is a 4.6 with a lil eaton blower. 350hp at the crank. Good runs nonetheless. -Mark
And the Z28 is one my friends as well, not me driving
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12-24-2006, 12:49 AM
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Originally Posted by Mach1Mustang
i could be wrong but the roush 2 is n/a. stage 3 is supercharged.
My question is......why stick a navi motor in a roush to begin with? Even if things don't match up (which they dont'), why do it? No dig on your friend man, but the amount of work, and money to custom everything, and make ti all work, is not worth it...........an L motor with a cobra R hood..that might be worth it......but a navi motor??? HMMM.....
12-24-2006, 11:38 AM
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Originally Posted by ponygt65
You are correct.
My question is......why stick a navi motor in a roush to begin with? Even if things don't match up (which they dont'), why do it? No dig on your friend man, but the amount of work, and money to custom everything, and make ti all work, is not worth it...........an L motor with a cobra R hood..that might be worth it......but a navi motor??? HMMM.....
My question is......why stick a navi motor in a roush to begin with? Even if things don't match up (which they dont'), why do it? No dig on your friend man, but the amount of work, and money to custom everything, and make ti all work, is not worth it...........an L motor with a cobra R hood..that might be worth it......but a navi motor??? HMMM.....
And Stage 2 Roush is N/A, but his stock 4.6L is sitting in his garage, so it's irrelevant now.
I can get some more vids/pics if you guys want of his car
12-26-2006, 12:35 AM
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Originally Posted by ZFan88
Like I said, I'm really not 100% sure on the specs. Obviously everything matches up if it's running pretty well lol. You're right though, a lot of money went into that motor to barely beat a lid/exhaust LS1 lol. Granted it is low compression for boost later on.
And Stage 2 Roush is N/A, but his stock 4.6L is sitting in his garage, so it's irrelevant now.
I can get some more vids/pics if you guys want of his car
And Stage 2 Roush is N/A, but his stock 4.6L is sitting in his garage, so it's irrelevant now.
I can get some more vids/pics if you guys want of his car
I have a read tech articles on 5.4 swaps. Granted, I have not known anyone dumb enough to do it (no offense), but, according to the write ups.......it is not an easy thing to do..........But, to each his own.
12-26-2006, 04:03 PM
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Originally Posted by ponygt65
I have a read tech articles on 5.4 swaps. Granted, I have not known anyone dumb enough to do it (no offense), but, according to the write ups.......it is not an easy thing to do..........But, to each his own.
12-26-2006, 04:17 PM
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The reason they are called "modular" motors is because the parts can swap around. So you can take a 5.4 block, and with relatively few complicatons, stick a set of 2v heads on it, and an intake manifold from a 2nd gen Lightning. The 2nd-gen Lightinings were 5.4s, btw. And you can also do a 4v head/intake swap on a 2v motor, relatively easy.
12-26-2006, 04:28 PM
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Originally Posted by Irunelevens
The reason they are called "modular" motors is because the parts can swap around. So you can take a 5.4 block, and with relatively few complicatons, stick a set of 2v heads on it, and an intake manifold from a 2nd gen Lightning. The 2nd-gen Lightinings were 5.4s, btw. And you can also do a 4v head/intake swap on a 2v motor, relatively easy.
Someone still has to explain to me what a 2nd gen lightning intake is and how it is used without that loud thing that usually resides on top.
12-26-2006, 04:37 PM
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They just decided to call it a "modular" motor... lol, I don't know, ask Ford. And I'm guessing that maybe he had 4v heads, and did a Lightning upper manifold maybe? His story has so many holes in it, it's hard to tell fact from BS.
12-26-2006, 07:08 PM
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Originally Posted by Irunelevens
They just decided to call it a "modular" motor... lol, I don't know, ask Ford. And I'm guessing that maybe he had 4v heads, and did a Lightning upper manifold maybe? His story has so many holes in it, it's hard to tell fact from BS.
12-26-2006, 08:22 PM
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Sorry, it's not my f'ing motor lol. I don't know much about Ford's stuff. Really though, who cares? It was a good race and his car is going to be sick on boost, even though it's a stang 
I'll still beat him with the spray!
I'll still beat him with the spray! 
02-20-2007, 09:51 PM
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I know it's been a while, but I finally got some pics since he's been using my computer lately. Here are some of the specs:
2004 Roush stage 2, Sonic Blue
Built 5.4L, VT Engines stage 2 heads, Stage 3 cams, Lightning Lower intake manifold cobra upper, BBK twin 65mm T/B, 30lb injectors,Aluminum flywheel, 373 gears, custom made long tubes, O/R H pipe and spintech's, Delmont tunable CAI, Centerforce duel friction clutch
Pics..
2004 Roush stage 2, Sonic Blue
Built 5.4L, VT Engines stage 2 heads, Stage 3 cams, Lightning Lower intake manifold cobra upper, BBK twin 65mm T/B, 30lb injectors,Aluminum flywheel, 373 gears, custom made long tubes, O/R H pipe and spintech's, Delmont tunable CAI, Centerforce duel friction clutch
Pics..
