Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old 02-15-2005, 07:38 PM
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I don't know if this has been asked before or done....We have all seen LS1 swaps on Mustangs and in just about any other kind of car. Has anyone ever put an 03/04 Cobra engine on a 98-02 Camaro/Trans Am? Can it be posstible?
Old 02-15-2005, 09:55 PM
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Originally Posted by Magnus LS1
I don't know if this has been asked before or done....We have all seen LS1 swaps on Mustangs and in just about any other kind of car. Has anyone ever put an 03/04 Cobra engine on a 98-02 Camaro/Trans Am? Can it be posstible?
I dont really see the point in it personally...those motors are pretty expensive new (like 13 k ive heard?) and even to do a swap for a stock motor with all the necesary componants would be way more than a cam and heads on an ls1 which would out perform the stock cobra motor. Not to mention I havent really seen any parts made for that kind of swap so it would probably all have to be fabed, correct me if im wrong. I guess it would be pretty intersting to see, and anything is possible if you have enough money, for all I know there might be one out there. On another note, i dont think anyone would disgrace a GM like that and put a ford motor in and ls1 car, thats blasphamy!
Old 02-15-2005, 10:07 PM
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it won't fit without cutting the cowl im fairly sure.

a 4.6 DOHC is larger than a big block, so it might not even fit between the shock towers?

Ryan
Old 02-15-2005, 10:15 PM
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ford tough with chevy stuff not the other way around. like he said nobody would disgrace a gm like that.
Old 02-15-2005, 10:22 PM
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yuo typically join a good motor into a good chassis.

the f-car is not a great chassis, heavier and smaller engine bay, and longer wheelbase compared to a mustang.

I would much rather build a ls1 powered mustang than a mod motor f-car.

Ryan.
Old 02-15-2005, 10:29 PM
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Have to agree that in my 10 years of actually paying attention, I don't know that I've ever seen a ford motor swapped into a gm.
Old 02-16-2005, 12:14 AM
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Guys don't get me wrong, I am a GM guy too! Its just a question/curiosity I have. Here in the southern part of Texas I have seen a 96 Cobra with an LS1 and a pair of fox body mustangs with carburated big inch-small block chevy engines. I just think that if someone adds an 03/04 Cobra engine (maybe from a wrecked cobra) into a 98-02 F-Body it will certainly be something to look foward too and see how it performs. Ofcourse there is going to be alot of modifications done but who knows maybe someone ($$$$) someday will atleast try it or do it.
Old 02-16-2005, 08:22 AM
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Originally Posted by Magnus LS1
Guys don't get me wrong, I am a GM guy too! Its just a question/curiosity I have. Here in the southern part of Texas I have seen a 96 Cobra with an LS1 and a pair of fox body mustangs with carburated big inch-small block chevy engines. I just think that if someone adds an 03/04 Cobra engine (maybe from a wrecked cobra) into a 98-02 F-Body it will certainly be something to look foward too and see how it performs. Ofcourse there is going to be alot of modifications done but who knows maybe someone ($$$$) someday will atleast try it or do it.
I don't see why anyone would want to do that. Just buy a supercharger for the LS1.
Old 02-16-2005, 08:32 AM
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I don't like the sound of it, but it would be origional. You could probly find someone to trade a cobra motor for an ls6 pretty easy.
Old 02-16-2005, 09:02 AM
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Originally Posted by Keenov
I don't see why anyone would want to do that. Just buy a supercharger for the LS1.
exactly. those ford motors make so much power because theyre supercharged. slap a blower on an LS1 and you will see why no one ever bothered to to take that step backwards.
Old 02-16-2005, 09:22 AM
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FYI: A 4-valve Cobra motor is just under 30" wide at its widest point (which is at the front cover). The exhaust manifolds point a little downward, so they are no wider than the heads themselves.
Old 02-16-2005, 09:38 AM
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I would think $$$ for $$$ it would make more sense to build up a big inch LS1 and make +500rwhp vs the ~350rwhp the stock Cobra motor would make. Unless you found a wrecked Cobra that was modified and were able to buy a big HP motor for cheap.
Old 02-16-2005, 10:43 AM
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i think anythng can be done wth the right amount of greenz....

i dont think it would be done in an f-body but i woul like to see something like a miata or a rx-7 with a cobra motor....wow!!! nasty power to weight huh?
Old 02-16-2005, 11:56 AM
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Originally Posted by obZidian
i dont think it would be done in an f-body but i woul like to see something like a miata or a rx-7 with a cobra motor....wow!!! nasty power to weight huh?
How heavy are those motors? I would figure with an iron block and dual over head cam it would be pretty heavy compared to an ls1, but i dunno?
Old 02-16-2005, 01:05 PM
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I've heard (not confirmed) they weigh ~700lbs.
Old 02-16-2005, 01:45 PM
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Originally Posted by Scooter70
FYI: A 4-valve Cobra motor is just under 30" wide at its widest point (which is at the front cover). The exhaust manifolds point a little downward, so they are no wider than the heads themselves.
Which would leave about an inch or two on each side to put manifolds in. I'd throw a nitrous Windsor motor in way before a mod motor. hell, I'd do it just to **** people off.
Old 02-16-2005, 02:00 PM
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Although I think the DOHC Ford 4.6/5.4 is a superb engine in every respect, putting one in an F-body is lunacy. For starters, it's ENORMOUS. It's the widest engine Ford has ever put in a car (a couple of inches wider than a Boss 429). I can't imagine how you'd stuff one in an F-body.
Old 02-16-2005, 02:22 PM
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Originally Posted by CMcCarthy
Although I think the DOHC Ford 4.6/5.4 is a superb engine in every respect, putting one in an F-body is lunacy. For starters, it's ENORMOUS. It's the widest engine Ford has ever put in a car (a couple of inches wider than a Boss 429). I can't imagine how you'd stuff one in an F-body.
thas kinda tarded, bigger motor, less power? the old ford motors were good motors. why build a motor thats bigger in every respect but cubic inches..? thats friggin mind boggling
Old 02-16-2005, 03:06 PM
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because over head cam is all the rage these days with imports...oops i meant mustangs...
Old 02-16-2005, 04:08 PM
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A DOHC 5.4 makes more net horsepower than the Boss 429, and is 99 cubes smaller, runs on 91 octane, and passes emissions. What's not to love about that?

Remember that the legendary motors of the 60s and 70s were all rated at gross HP, which is with no accessories and open exhaust. You should know from experience with the LS1s what the open exhaust alone is worth. The 425 gross HP Boss 429 would have struggled to make 385 net like the Cobra R 5.4 does. It also weighed significantly more than the mod motors do.

Hating on Ford stuff simply because it's Ford and mod motors because you don't understand them is the only thing retarded here.


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