Rolling Road Results
Discussion
ringram said:
No, try 485fwhp. I guessed Gary's rw from his fly with less than 0.5% error 
Basically rw is 20% of fly in the M6 vxr8
388 is a good stock number. Ive not seen any MF LS3's hit that.
Is that a WP setup Mr Tattoo?
What size catback etc? Cats?
Yes Richard, it's a WP set up.Basically rw is 20% of fly in the M6 vxr8
388 is a good stock number. Ive not seen any MF LS3's hit that.
Is that a WP setup Mr Tattoo?
What size catback etc? Cats?
WP headers and 200 cell sports cats with a 3" cat back with a WP OTR from a W427.
Both Precious Metal and WP have said the car is not Cammed?
Gareth did try to look at the map but it's locked
ARAF said:
Tattooboy said:
Can't seem to update the table on a crappy IPad, however, 388rwhp, fly wheel, pick a number, let's go for 1 billion 
There's a surprise. Done for you. I estimated 500 at the fly. I think you're being unfair, if you think you have so much power loss through the drive train.
Tattooboy said:
Yes Richard, it's a WP set up.
WP headers and 200 cell sports cats with a 3" cat back with a WP OTR from a W427.
Both Precious Metal and WP have said the car is not Cammed?
Gareth did try to look at the map but it's locked
Ok makes sense. Proper exhaust size. With cam I would have expected well over 400rwhp. You should even exceed 450rwhp no problem with cam only addition IMO.WP headers and 200 cell sports cats with a 3" cat back with a WP OTR from a W427.
Both Precious Metal and WP have said the car is not Cammed?
Gareth did try to look at the map but it's locked
Guys in Oz get 400rwhp no cam, just intake and exhaust etc. So drop the cats and run an underdrive etc you might touch 400rwhp same as them.
No point looking at the tune I doubt there is much/anything to learn there. Most of the gains will be in the setup. Maybe just getting accurate fueling sorted.
But I disagree with locking PCM in principle as its locked to the tuner. It ceases to be your PCM they now own it and any changes. This is bad.
Thats the best "stock" LS3 results Ive seen. My challenge will be to beat it with an auto!
ARAF said:
There's a surprise.
Your gains from CAI and exhaust were good too mate. Close to 15% thats almost the best value mod of the day IMO.Cam is going to cost you quite a bit more. You might be able to get someone's second hand LS2 or LS3 cam and cam gear to keep costs down if you are really going for best BHP/£
ARAF said:
Thanks. 
Is that the same for autos?
Go with 25% for auto IIRC. Charlie may have a more accurate number. But thats the general number, an extra 5%Is that the same for autos?
So yours is now around 425fwhp aka 320kw
Did you not get a fwhp off Charlie?Locking the converter would make it more efficient, so if you did that 5% might/would be too much.
ringram said:
Tattooboy said:
Yes Richard, it's a WP set up.
WP headers and 200 cell sports cats with a 3" cat back with a WP OTR from a W427.
Both Precious Metal and WP have said the car is not Cammed?
Gareth did try to look at the map but it's locked
Ok makes sense. Proper exhaust size. With cam I would have expected well over 400rwhp. You should even exceed 450rwhp no problem with cam only addition IMO.WP headers and 200 cell sports cats with a 3" cat back with a WP OTR from a W427.
Both Precious Metal and WP have said the car is not Cammed?
Gareth did try to look at the map but it's locked
Guys in Oz get 400rwhp no cam, just intake and exhaust etc. So drop the cats and run an underdrive etc you might touch 400rwhp same as them.
No point looking at the tune I doubt there is much/anything to learn there. Most of the gains will be in the setup. Maybe just getting accurate fueling sorted.
But I disagree with locking PCM in principle as its locked to the tuner. It ceases to be your PCM they now own it and any changes. This is bad.
Thats the best "stock" LS3 results Ive seen. My challenge will be to beat it with an auto!
ringram said:
ARAF said:
Thanks.
Is that the same for autos?
Go with 25% for auto IIRC. Charlie may have a more accurate number. But thats the general number, an extra 5%Is that the same for autos?
So yours is now around 425fwhp aka 320kw
Did you not get a fwhp off Charlie?Locking the converter would make it more efficient, so if you did that 5% might/would be too much.
Roger was in the car. He said he's never managed to lock the VE auto boxes manually, but if you hold them at a constant for a few seconds before the power run, they lock automatically, so I'll take the conservative 20%, which still takes me north of 400bhp for an engine rated at 350bhp, without a remap. I didn't ask Charlie for the fly figure, as I don't go to the pub very often.
I was very happy with 35rwhp from my budget modifications. It worked out at about £6/hp - which justifies the hypothesis of the early power gains being the cheap ones - and probably beats you £/BHP of a £300 cam.
More seriously, it puts me on a par with standard LS2 VXR8s in the power stakes - which is where I was hoping to be.
However, I was 4mph down on JonnM and 7mph down on FB76 at Thunder Road, so I guess the aeros of the truck hurt it. The results I saw were confirming my view of long term plans, and where to go next.
Sorry that your figures weren't collated, but I think we were all just having too good a time. There were lots of new faces there - which is very good for this forum.
My lowly CV8 managed 301 bhp at the wheels and a surprising 315 lbft of torque at the wheels! Roger commented something about the timing being 2 degrees out due to the heat, I turned up and ran straight away! Got a Lunati cam sat in my spare room that isn't adding much bhp to the house that i may have to get fitted but would have to change inlet as well if i was going to the effort of fitting a new cam!
psycho sport said:
My lowly CV8 managed 301 bhp at the wheels and a surprising 315 lbft of torque at the wheels! Roger commented something about the timing being 2 degrees out due to the heat, I turned up and ran straight away! Got a Lunati cam sat in my spare room that isn't adding much bhp to the house that i may have to get fitted but would have to change inlet as well if i was going to the effort of fitting a new cam!
And heads psycho sport said:
My lowly CV8 managed 301 bhp at the wheels and a surprising 315 lbft of torque at the wheels! Roger commented something about the timing being 2 degrees out due to the heat, I turned up and ran straight away! Got a Lunati cam sat in my spare room that isn't adding much bhp to the house that i may have to get fitted but would have to change inlet as well if i was going to the effort of fitting a new cam!
Not necessarily, still gains to be had cam only (well with springs etc)Its kind of something like 25% Heads + 65% Cam + 10% Intake = BHP
Depends on your power goal. IMO get the best heads possible as well as supporting intake as it will mean you can go smaller on the cam, which means better idle and low speed characteristics. Cam is often the cheapest part of the equation too.
What spec is the cam?
In most cases 1-7/8 with dual 3" is best bet for exhaust.
Cam spec is :
Advertised Duration (Int/Exh): 272/278
Duration @ .050 (Int/Exh): 222/228
Gross Valve Lift (Int/Exh): .567"/.567"
LSA/ICL: 113/109
Valve Lash (Int/Exh): Hyd/Hyd
RPM Range: 2000-6600
Was looking at adding a fast 92 inlet with nick williams throttle body.
Advertised Duration (Int/Exh): 272/278
Duration @ .050 (Int/Exh): 222/228
Gross Valve Lift (Int/Exh): .567"/.567"
LSA/ICL: 113/109
Valve Lash (Int/Exh): Hyd/Hyd
RPM Range: 2000-6600
Was looking at adding a fast 92 inlet with nick williams throttle body.
Edited by psycho sport on Sunday 19th October 18:06
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