575HP LS3 Swapped Jaguar XJ8L
#21
03-31-2016, 06:26 AM
"One 4.0 with stock TB and MAF, 1.96 pulley ratio: 522bhp with AFR 12.5 and 519bhp with AFR 11.5 , both at 16.7PSI. Bit restrictive intake pipe at that time. Another 4.0 with stock MAF but bored TB and better intake tube/filter with very low measured vacuum at 20PSI ( same pulley ratio ) has made 30-40bhp more based on the 1/4mile results."
So the car in the video makes more power naturally aspirated with mild bolt ons than the AJ27S with a twin screw supercharger. Not bad for a lump eh
#22
03-31-2016, 07:20 AM
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...
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...
#23
03-31-2016, 07:21 AM
Originally Posted by JagSTR2004;1432821[IMG
resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png[/IMG]1432821[IMG]resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png[/IMG]1432821]I guess by much more serious and not with the heaton you are referring to a TS blower swap, in which case I recall you mentioning some converted 4.0's:
"One 4.0 with stock TB and MAF, 1.96 pulley ratio: 522bhp with AFR 12.5 and 519bhp with AFR 11.5 , both at 16.7PSI. Bit restrictive intake pipe at that time. Another 4.0 with stock MAF but bored TB and better intake tube/filter with very low measured vacuum at 20PSI ( same pulley ratio ) has made 30-40bhp more based on the 1/4mile results."
So the car in the video makes more power naturally aspirated with mild bolt ons than the AJ27S with a twin screw supercharger. Not bad for a lump eh
"One 4.0 with stock TB and MAF, 1.96 pulley ratio: 522bhp with AFR 12.5 and 519bhp with AFR 11.5 , both at 16.7PSI. Bit restrictive intake pipe at that time. Another 4.0 with stock MAF but bored TB and better intake tube/filter with very low measured vacuum at 20PSI ( same pulley ratio ) has made 30-40bhp more based on the 1/4mile results."
So the car in the video makes more power naturally aspirated with mild bolt ons than the AJ27S with a twin screw supercharger. Not bad for a lump eh
Last edited by XJR-99; 03-31-2016 at 07:35 AM.
#24
03-31-2016, 07:49 AM
Senior Member
Depending on where he lives in Nevada, an emissions test might not be necessary.
Nevada Emissions Testing Geographic Areas
Nevada Emissions Testing Geographic Areas
#25
03-31-2016, 08:24 AM
TS is first step and full engine rebuild to the new displacement, strenght, breathing, fueling and tuning levels are the next steps. Actually AVOS dynod 579bhp from very stock AJ27S (+TS ) many years ago. It just needs good intake side and higher pulley ratio to go over 20PSI, keep detonation away and that's it.
#26
03-31-2016, 09:13 AM
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Well, as the British would say: 'it's not my cup of tea', and we are all entitled to our 'taste' as you put it.
#27
03-31-2016, 09:54 AM
That's good to know, the dynos I've seen of ccfulton and Davey using the 2.6KB were around 450-460whp on the X100 XKR and X350 XJR using the AJ33S all be it at low boost with stock engines. I know the 2.6 is capable of way more though as shown by Andre. As a comparison to a modified and twin screwed AJ27S, I've just read an article on superchevy.com of a stroked 7.0 'lump' LS3 with a 3.6KB, it put down 1000whp on low boost and is capable of over 1200whp
Making big power is not any kind of problem nowdays.
More than peak dyno hp numbers and I am interested in strong low/mid rpms because of everyday driving. Of course it's fine if reach minimum 1/4mile target 11.3 ( or dream 10.X ) and 300km/h ( 186mph ) at standing mile. And all this based on real Jag engine, which looks like stock when open the bonnet.
#28
03-31-2016, 11:59 AM
Making big power is not any kind of problem nowdays.
More than peak dyno hp numbers and I am interested in strong low/mid rpms because of everyday driving. Of course it's fine if reach minimum 1/4mile target 11.3 ( or dream 10.X ) and 300km/h ( 186mph ) at standing mile. And all this based on real Jag engine, which looks like stock when open the bonnet.
More than peak dyno hp numbers and I am interested in strong low/mid rpms because of everyday driving. Of course it's fine if reach minimum 1/4mile target 11.3 ( or dream 10.X ) and 300km/h ( 186mph ) at standing mile. And all this based on real Jag engine, which looks like stock when open the bonnet.
The 3.6KB LS3 I referred to actually made more than 950lb/ft of torque at less than 3700rpm on pump fuel so I don't think low/mid-range power is an issue. Here's the article, it runs 9 second quarter miles easily - Kenne Bell Supercharged 1000 HP LS3 - Boosted Beyond Belief - Super Chevy Magazine
I don't think many purists would call an engine which has been bored to a new displacement, with aftermarket cams and an American supercharger a real jag engine, but I think it's awesome. Regarding it looking stock when you open the bonnet, it depends who you're trying to fool as I'm pretty sure the snout on the heaton is pretty visible with the bonnet open
Last edited by JagSTR2004; 03-31-2016 at 12:01 PM.
#31
03-31-2016, 01:24 PM
It's really not, especially with turbos becoming increasingly common.
The 3.6KB LS3 I referred to actually made more than 950lb/ft of torque at less than 3700rpm on pump fuel so I don't think low/mid-range power is an issue. Here's the article, it runs 9 second quarter miles easily - Kenne Bell Supercharged 1000 HP LS3 - Boosted Beyond Belief - Super Chevy Magazine
I don't think many purists would call an engine which has been bored to a new displacement, with aftermarket cams and an American supercharger a real jag engine, but I think it's awesome. Regarding it looking stock when you open the bonnet, it depends who you're trying to fool as I'm pretty sure the snout on the heaton is pretty visible with the bonnet open
The 3.6KB LS3 I referred to actually made more than 950lb/ft of torque at less than 3700rpm on pump fuel so I don't think low/mid-range power is an issue. Here's the article, it runs 9 second quarter miles easily - Kenne Bell Supercharged 1000 HP LS3 - Boosted Beyond Belief - Super Chevy Magazine
I don't think many purists would call an engine which has been bored to a new displacement, with aftermarket cams and an American supercharger a real jag engine, but I think it's awesome. Regarding it looking stock when you open the bonnet, it depends who you're trying to fool as I'm pretty sure the snout on the heaton is pretty visible with the bonnet open
Jag V8 block, Jag V8 heads, Jag V8 cams - just modified profiles etc. etc.
KB is American company as well as Eaton., so no difference. But anyway people have different tastes. I would not own a Ferrari with other than Ferrari engine.
#32
03-31-2016, 02:20 PM
I thought you were implying that the AJ27S had better performance than the lump in the low range after I quoted peak power figures.
Exactly, once you've changed the specifications of the majority of the internals it's no longer an OEM Jaguar engine. It's an XJR-99 designed engine specifically to your liking. The Eaton may be American, but it's still the original supercharger selected by Jaguar when designing the car and is still being used by them on the AJ133. By contrast, the KB has never been used on any 'real' Jaguar engine as you say from factory so it's a big difference.
Depends what Ferrari it is and what it's intended use is. I'm not against modifications by the way, but don't think to can criticise another's car with a swapped engine when your own is completely different to stock.
Exactly, once you've changed the specifications of the majority of the internals it's no longer an OEM Jaguar engine. It's an XJR-99 designed engine specifically to your liking. The Eaton may be American, but it's still the original supercharger selected by Jaguar when designing the car and is still being used by them on the AJ133. By contrast, the KB has never been used on any 'real' Jaguar engine as you say from factory so it's a big difference.
Depends what Ferrari it is and what it's intended use is. I'm not against modifications by the way, but don't think to can criticise another's car with a swapped engine when your own is completely different to stock.
Last edited by JagSTR2004; 03-31-2016 at 02:23 PM.
#33
03-31-2016, 08:39 PM
Veteran Member
Exciting car but...
Brings tears to my eyes that someone beat me getting an LS3 based Jag on the road.
My poor LS3 S-type eagerly awaits the day I will start working on the electrical again.
I hope you all noted that he ditched the ABS and went with bigger calipers and power brakes. (No TCS either I presume)
Did you notice he replaced the instrument cluster with a digital set-up?
I figure he removed all the electrical integration between the Jaguar electrical and the Chevy engine.
A LS3 575HP engine can be purchased off the shelf these days. He likely used the Chevy E-rod ECM and harness or another aftermarket harness that outputs basic signals to his digital dash
I wonder if any of the interior electrical work, or if he had to rewire to get windows, door locks and lights to work.
Brings tears to my eyes that someone beat me getting an LS3 based Jag on the road.
My poor LS3 S-type eagerly awaits the day I will start working on the electrical again.
I hope you all noted that he ditched the ABS and went with bigger calipers and power brakes. (No TCS either I presume)
Did you notice he replaced the instrument cluster with a digital set-up?
I figure he removed all the electrical integration between the Jaguar electrical and the Chevy engine.
A LS3 575HP engine can be purchased off the shelf these days. He likely used the Chevy E-rod ECM and harness or another aftermarket harness that outputs basic signals to his digital dash
I wonder if any of the interior electrical work, or if he had to rewire to get windows, door locks and lights to work.
#34
03-31-2016, 11:59 PM
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#35
04-01-2016, 01:57 AM
Veteran Member
#36
04-01-2016, 02:19 AM
Actually, my 'taste' is something different. Many years ago I was part of a small Italian racing team whose cars produce a sound extremely exciting to my ears. If this sound is indicative of my poor taste, then I suppose you are right...
The Best Sounding F1 Engine: Ferrari 3.0L V12 - 1995 Ferrari 412 T2 Sound - YouTube
The Best Sounding F1 Engine: Ferrari 3.0L V12 - 1995 Ferrari 412 T2 Sound - YouTube
#37
04-01-2016, 02:46 AM
Exciting car but...
Brings tears to my eyes that someone beat me getting an LS3 based Jag on the road.
My poor LS3 S-type eagerly awaits the day I will start working on the electrical again.
I hope you all noted that he ditched the ABS and went with bigger calipers and power brakes. (No TCS either I presume)
Did you notice he replaced the instrument cluster with a digital set-up?
I figure he removed all the electrical integration between the Jaguar electrical and the Chevy engine.
A LS3 575HP engine can be purchased off the shelf these days. He likely used the Chevy E-rod ECM and harness or another aftermarket harness that outputs basic signals to his digital dash
I wonder if any of the interior electrical work, or if he had to rewire to get windows, door locks and lights to work.
Brings tears to my eyes that someone beat me getting an LS3 based Jag on the road.
My poor LS3 S-type eagerly awaits the day I will start working on the electrical again.
I hope you all noted that he ditched the ABS and went with bigger calipers and power brakes. (No TCS either I presume)
Did you notice he replaced the instrument cluster with a digital set-up?
I figure he removed all the electrical integration between the Jaguar electrical and the Chevy engine.
A LS3 575HP engine can be purchased off the shelf these days. He likely used the Chevy E-rod ECM and harness or another aftermarket harness that outputs basic signals to his digital dash
I wonder if any of the interior electrical work, or if he had to rewire to get windows, door locks and lights to work.
He said he used a GM LS ECU Box (E1R).
#38
04-01-2016, 03:36 AM
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#39
04-01-2016, 04:07 AM
Early 90s owned this car very short time. Ou man, brilliant French bodywork and what the hell under the hood....383 Mopar - and all that from the factory. Real lump 
Btw. we have here a couple XJ series 2s: One with Ford 347 stroker + manual + E85 and one with new 5.7 Hemi.
Btw. we have here a couple XJ series 2s: One with Ford 347 stroker + manual + E85 and one with new 5.7 Hemi.
#40
04-01-2016, 06:34 AM
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There are a number of small European car companies (usually one off customs) that used road thumpin' American V8 muscle (and still do) that every time I hear about them I'm curious how its engineered. They tend to like to bring out the thunderous sound rather boisterously. I have to rely on the Top Gear show to find out about these, but here's a list of some.....List of American Powered European Cars