Discussion
Given that it's their test mule I'd forgive them the build quality and packaging.
As for the door. It's not unknown for ultimas to do that 'at speed' (I can see the top edge my window frame lifting when progressing..) f I would expect a session in a wind tunnel to reveal a big low-pressure zone that's sucking away at the door. If it hasn't been shut properly or the latch adjustment isn't spot on.....
Lottery win tonight would equal one of these paired with an Autobioincs PDK
As for the door. It's not unknown for ultimas to do that 'at speed' (I can see the top edge my window frame lifting when progressing..) f I would expect a session in a wind tunnel to reveal a big low-pressure zone that's sucking away at the door. If it hasn't been shut properly or the latch adjustment isn't spot on.....
Lottery win tonight would equal one of these paired with an Autobioincs PDK
BogBeast said:
Given that it's their test mule I'd forgive them the build quality and packaging.
As for the door. It's not unknown for ultimas to do that 'at speed' (I can see the top edge my window frame lifting when progressing..) f I would expect a session in a wind tunnel to reveal a big low-pressure zone that's sucking away at the door. If it hasn't been shut properly or the latch adjustment isn't spot on.....
Lottery win tonight would equal one of these paired with an Autobioincs PDK
PDK only good for Circa about 520lbs/ft at the moment. they are working on better torque handling.As for the door. It's not unknown for ultimas to do that 'at speed' (I can see the top edge my window frame lifting when progressing..) f I would expect a session in a wind tunnel to reveal a big low-pressure zone that's sucking away at the door. If it hasn't been shut properly or the latch adjustment isn't spot on.....
Lottery win tonight would equal one of these paired with an Autobioincs PDK
confusionhunter said:
Errr...... It is an LS7!
Its been converted to DOHC using custom heads, chains to the exhaust cam from where the central cam would be, and internal gears in the headto the inlet cams..... Goes to show you what a 7 litre engine with proper volumetric efficiency can do!
I think Chris knows that. What he means is could you get close to similar power from a 'built' ls7 without mods like quad cams etc. A turbo would be a breeze :-)Its been converted to DOHC using custom heads, chains to the exhaust cam from where the central cam would be, and internal gears in the headto the inlet cams..... Goes to show you what a 7 litre engine with proper volumetric efficiency can do!
Boosted LS1 said:
confusionhunter said:
Errr...... It is an LS7!
Its been converted to DOHC using custom heads, chains to the exhaust cam from where the central cam would be, and internal gears in the headto the inlet cams..... Goes to show you what a 7 litre engine with proper volumetric efficiency can do!
I think Chris knows that. What he means is could you get close to similar power from a 'built' ls7 without mods like quad cams etc. A turbo would be a breeze :-)Its been converted to DOHC using custom heads, chains to the exhaust cam from where the central cam would be, and internal gears in the headto the inlet cams..... Goes to show you what a 7 litre engine with proper volumetric efficiency can do!
Now a 460 with 4 valve heads and ITBs would be very interesting!
And a 427 with 4 valve heads and twin turbos would be even more interesting! Haha
I love NA engines but I suspect the cost of that DOHC engine would be similar to the 1020hp engine from AS.
Not the same high revs but way more power and torque.
I may change my LS7 cam and remap in the next year or two to take mine out to 650ish Hp. On the road I think that is plenty as I do like to be able to fully depress the loud pedal occasionally.
Paul
Not the same high revs but way more power and torque.
I may change my LS7 cam and remap in the next year or two to take mine out to 650ish Hp. On the road I think that is plenty as I do like to be able to fully depress the loud pedal occasionally.
Paul
Storer said:
I love NA engines but I suspect the cost of that DOHC engine would be similar to the 1020hp engine from AS.
Not the same high revs but way more power and torque.
I may change my LS7 cam and remap in the next year or two to take mine out to 650ish Hp. On the road I think that is plenty as I do like to be able to fully depress the loud pedal occasionally.
Paul
The price is 28,900 USD so a few grand cheaper than the 700hp American speed LS7, I am not sure if that price includes ECU and absolutely everything you need to just bolt it in.Not the same high revs but way more power and torque.
I may change my LS7 cam and remap in the next year or two to take mine out to 650ish Hp. On the road I think that is plenty as I do like to be able to fully depress the loud pedal occasionally.
Paul
More info here: https://speedkore.com/crate-engines/
Edited by EVO CL on Tuesday 10th October 04:45
Nice engineering; but straight from GM for circa $17K an LSX454R is 770BHP / 600 lbs/ft out of the crate at same peak rpm.
Not bad value for a n/a small block with a forged bottom and top end, six bolt mains and heads,
Throw a few pounds of boost and a "softer" custom cam at it and it would be an absolute peach of a motor.
Not bad value for a n/a small block with a forged bottom and top end, six bolt mains and heads,
Throw a few pounds of boost and a "softer" custom cam at it and it would be an absolute peach of a motor.
bluesatin said:
All ultima doors open at speed. 160-170mph and you get 1inch gap at the top of the door.
I did 176mph at bruntingthorpe two weeks ago and didn't have any problems with my doors and never heard of this issue before. For a car that with the right spec does 200mph I think any door opening would be more than a little disconcerting and highly dangerous!
F.C. said:
Nice engineering; but straight from GM for circa $17K an LSX454R is 770BHP / 600 lbs/ft out of the crate at same peak rpm.
Not bad value for a n/a small block with a forged bottom and top end, six bolt mains and heads,
Throw a few pounds of boost and a "softer" custom cam at it and it would be an absolute peach of a motor.
but....American Speed 29.000usd and Create Engine also....Not bad value for a n/a small block with a forged bottom and top end, six bolt mains and heads,
Throw a few pounds of boost and a "softer" custom cam at it and it would be an absolute peach of a motor.
i don't understand: HP equal ,the choice seems easy and I add that ,perhaps, GM is more reliable.
or no?
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