XJ XJ8 / XJR ( X308 ) 1997 - 2003

575HP LS3 Swapped Jaguar XJ8L

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  #1  
Old 03-30-2016, 07:02 AM
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Old 03-30-2016, 09:36 AM
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That is flat out awesome.....that engine sounds so sweet and pulls like there's no tomorrow. Being a Ford guy, I'd personally rather use a Roush 588R or 427R in her, but man that is very nice...thanks for sharing.
 
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Old 03-30-2016, 01:30 PM
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Definitely one of the coolest cars I've ever seen, makes me want a LS engine and a T56 in my STR!
 
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Old 03-30-2016, 01:32 PM
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Well, it's just a lump
 
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Old 03-30-2016, 01:53 PM
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A 470whp lump though, not bad at all considering an X308 XJR makes 370bhp at the engine with a supercharger!
 
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Old 03-30-2016, 03:50 PM
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Certainly a route I'm considering if/when the stock plant goes in my XJR. Very well done, though I'm not sure I'm feeling the gated shifter, but especially for a car he bought for 1200 bucks!
 
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Old 03-30-2016, 04:10 PM
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Not sure how he intends to get this lump through an emissions test.

Sorry, not a fan of 1950s technology, low revving, pushrod engines of any type. The engine belongs in some 1960s GM resto-mod.
 
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Old 03-30-2016, 04:41 PM
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Could be old fashioned, but you can't argue with the power and sound.
 
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Old 03-30-2016, 06:33 PM
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Sounds just like what it is: an ancient, large displacement, pushrod eight cylinder from GM with poor fuel economy.
 
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Old 03-30-2016, 09:09 PM
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I find the LS engine family brilliant in it's simplicity, the fuel economy is not too bad on them either if you stay out of it.

I'm not saying that I don't like the AJ family of motors or the coyote which is also a great powerplant, but I won't bash it just to bash it. If it was 50's tech it would've been built in the 50s.
 
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Old 03-30-2016, 10:01 PM
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Originally Posted by adam699
...I find the LS engine family brilliant in it's simplicity...If it was 50's tech it would've been built in the 50s.
Kindly explain to me how it is anything other than 1950s technology for its simplicity?

Well, at least GM got away from cast iron and now use aluminium, so I suppose that is a step forward for this ancient form of engine technology.
 
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Old 03-30-2016, 11:05 PM
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I think he made a great car and find it cool that people are doing these kind of things! (its not to my taste, but that doesn't matter).

He mentioned he bought the car for $1200, and with all parts costs where $38.000 (no mention of labor). 1950's technology doesn't come cheap anymore ;-).
 
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Old 03-30-2016, 11:05 PM
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Originally Posted by NBCat
Kindly explain to me how it is anything other than 1950s technology for its simplicity?

Well, at least GM got away from cast iron and now use aluminium, so I suppose that is a step forward for this ancient form of engine technology.
Any 4 stroke combustion engine is old technology. Now don't tell me that there has been no advancements in flow measuring and design, metallurgy allowing for better materials, manufacturing improving strength and consistency. It's like hating on a car because it still has 4 round wheels so it's old technology.
 
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Old 03-30-2016, 11:50 PM
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Originally Posted by JagSTR2004
A 470whp lump though, not bad at all considering an X308 XJR makes 370bhp at the engine with a supercharger!
Yes, as stock.......
 
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Old 03-31-2016, 12:54 AM
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Originally Posted by adam699
Any 4 stroke combustion engine is old technology...
That is not true because the four-stroke engine has evolved over time. This type of technology being presented in this video is frozen in the 1950s. An excessive number of moving parts and mass ensuring low maximum rpm.

Originally Posted by adam699
...Now don't tell me that there has been no advancements in flow measuring and design, metallurgy allowing for better materials, manufacturing improving strength and consistency.
There is still the large number of moving parts, restricted cylinder head design and breathing issues to overcome, but at least GM and FCA have moved to aluminium castings to lighten the weight of the block and heads.

Originally Posted by adam699
...It's like hating on a car because it still has 4 round wheels so it's old technology.
'Hating on'? I do not hate this technology, I just believe it belongs in something from the era in which it was developed: the 1950s and 1960s. Jaguar have not used a pushrod-style engine since the early 1950s.
 
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Old 03-31-2016, 03:02 AM
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Originally Posted by NBCat
Sounds just like what it is: an ancient, large displacement, pushrod eight cylinder from GM with poor fuel economy.
Sorry to say it but I think you have poor taste if you're not excited by the sound of that car. I'm not sure many people driving a 6.2 litre V8 are buying it to save money on fuel either.
 
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Old 03-31-2016, 03:12 AM
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Originally Posted by avos
I think he made a great car and find it cool that people are doing these kind of things! (its not to my taste, but that doesn't matter).

He mentioned he bought the car for $1200, and with all parts costs where $38.000 (no mention of labor). 1950's technology doesn't come cheap anymore ;-).
Completely agree, although I'd change some things on the car if it were my own build, as a lover of fast cars and Jaguars I find I really appreciate what he has created.
 
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Old 03-31-2016, 03:24 AM
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Originally Posted by XJR-99
Yes, as stock.......
I rewatched the video and the owner actually said it made 488whp with bolt ons. We both know an X308 XJR will get nowhere near that with bolt ons but please correct me if you know of one. Even 450bhp at the engine is wishful thinking with the heaton.
 
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Old 03-31-2016, 04:35 AM
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Originally Posted by JagSTR2004
I rewatched the video and the owner actually said it made 488whp with bolt ons. We both know an X308 XJR will get nowhere near that with bolt ons but please correct me if you know of one. Even 450bhp at the engine is wishful thinking with the heaton.

I am talking about much more serious than just bolt ons and not with heaton. I know at least three such cars. One of them very well.
 

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Old 03-31-2016, 05:56 AM
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Wait until the day we are all inundated with the screaming silence of the electric motor. The lost rumble of the combustion motor, no matter push rod or overhead cam, will be lost to the eerie silence of the massive torque ridden propulsion devices where the only noise you'll hear is the sound of its rolling tires. Look out piston world, Tesla is making quiet noise and movies like Demolition Man will become reality.
Until then, enjoy the throaty rev up and decelerating report that induces a pulse racing rumble from that combustion motor.
Rev on motor heads.....Rev on...
 
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