VE SS M6 into the 11s?

[Xjas]

What does it really take to get a VE SSV M6 into the 11s?

My VE SSV M6 has run a best of 12.76 @ 113 on a 2.08 sixty foot which I am very happy with but as always I'd like to go faster.
The car is full weight, runs a small cam and made 310rwkws but between then and the drags I put the stock rear cans back on the exhaust to quieten it down.

I can take out the spare and jack, and I have a diff centre that I am going to put 4.11 in but other than that what else can I do to chase that 11?
Does my mph indicate enough power to get there or will I fall short no matter how well the car is set up?

[Smashfist]

2.08 is a slow 60ft. What tyres do you have? With a good clutch you could probably get in a mid-high RPM launch on some sticky rubber and bring the 60ft down which will net you big gains at the back end.

[Xjas]

2.08 is a slow 60ft. What tyres do you have? With a good clutch you could probably get in a mid-high RPM launch on some sticky rubber and bring the 60ft down which will net you big gains at the back end.

Currenty running Bridgestone Potenzas, launching at 4k, still on the stock clutch, haven't raced a manual before so I still need a lot of practice.

[sportwagon]

The slowest ive heard of a full weight ve run 11s was 115mph and that was an auto with a high stall,so not sure if 113 will get you there,maybe others have seen sub 115mph run 11s. A better 60 foot time and some good cold air might improve your 113mph.

[Xjas]

The slowest ive heard of a full weight ve run 11s was 115mph and that was an auto with a high stall,so not sure if 113 will get you there,maybe others have seen sub 115mph run 11s. A better 60 foot time and some good cold air might improve your 113mph.

Yeah, my 12.76 was on a 29C day, I was seeing 65C intake temps off the line, dropping to 45C over the quater, it was pulling around 4 degrees of timing so I think the car would definately benifit from some cooler weather and maybe a heat shield between the OTR and radiator.

[SSUte01]

That's the issue with many intake setups and IAT readings there's no way that your engine at 180km/h and full noise is ingesting 45*C air which makes the calculated MAT for fuelling inaccurate and airflow/airmass models inaccurate and then there's the IAT spark that you mentioned. To your original question, the biggest variable is the driver for sure. There's been a couple of very, very good M6 peddler's that I've met and raced over the years and both we're able to take various bolt on Commodores to 11s. I've forgotten his user name, but Mick in his bolt on VE tuned by Russo with full bolt ons and 3.7 gears from memory ran consistently into 11.7-8 (I believe, I have a timeslip somewhere as I was in the other lane) @116-117mph off 1.6x 60 footers and his car was around 270-280rwkW from memory. You will need a set of decent ET Radials or equivalent, take out whatever excess weight you have, I think 4.11s are a bit short for the better ratio box in the VE, but could be wrong, and you will likely need a clutch eventually. I believe that if you can get a 1.6x-1.7x 60 footer (which is not easy in a manual as best I could ever get was 1.7x) on a cooler night you'll be pretty close to an eleven. I chased an 11 in my old manual and closest I got was 12.005 @ 118mph of a 1.7 60 and 280rwkW (small cam 218/224 H/C LS1). Good luck. BTW, lemme know when you head down to drags as based on profile we live somewhere near each other and I was only down there the other week. not enough people up here interested in it.

[blackvussii]

That's the issue with many intake setups and IAT readings there's no way that your engine at 180km/h and full noise is ingesting 45*C air which makes the calculated MAT for fuelling inaccurate and airflow/airmass models inaccurate and then there's the IAT spark that you mentioned. To your original question, the biggest variable is the driver for sure. There's been a couple of very, very good M6 peddler's that I've met and raced over the years and both we're able to take various bolt on Commodores to 11s. I've forgotten his user name, but Mick in his bolt on VE tuned by Russo with full bolt ons and 3.7 gears from memory ran consistently into 11.7-8 (I believe, I have a timeslip somewhere as I was in the other lane) @116-117mph off 1.6x 60 footers and his car was around 270-280rwkW from memory. You will need a set of decent ET Radials or equivalent, take out whatever excess weight you have, I think 4.11s are a bit
short for the better ratio box in the VE, but could be wrong, and you will likely need a clutch eventually. I believe that if you can get a 1.6x-1.7x 60 footer (which
is not easy in a manual as best I could ever get was 1.7x) on a cooler night you'll be pretty close to an eleven. I chased an 11 in my old manual and closest I got
was 12.005 @ 118mph of a 1.7 60 and 280rwkW (small cam 218/224 H/C LS1). Good luck. BTW, lemme know when you head down to drags as based on profile
we live somewhere near each other and I was only down there the other week. not enough people up here interested in it.

I run a similar engine combo in my m6 ls1 ute, what other mods did u have to get the 12.005? I'm hoping to have a go at the drags pretty soon.

[SSUte01]

I run a similar engine combo in my m6 ls1 ute, what other mods did u have to get the 12.005? I'm hoping to have a go at the drags pretty soon.

I sold it six years ago or so, but it was 346ci, Crow 218/224 114LSA 0.525" lift with ported heads, 10.9-11.0:1 comp, OTR, full exhaust, Tex clutch, 3.91 gears, race weight was fairly light 1660 or 1680kg from memory, definitely under 1700kg, 60 footer was 1.77 MT ET Streets.

[Xjas]

That's the issue with many intake setups and IAT readings there's no way that your engine at 180km/h and full noise is ingesting 45*C air which makes the calculated MAT for fuelling inaccurate and airflow/airmass models inaccurate and then there's the IAT spark that you mentioned. To your original question, the biggest variable is the driver for sure. There's been a couple of very, very good M6 peddler's that I've met and raced over the years and both we're able to take various bolt on Commodores to 11s. I've forgotten his user name, but Mick in his bolt on VE tuned by Russo with full bolt ons and 3.7 gears from memory ran consistently into 11.7-8 (I believe, I have a timeslip somewhere as I was in the other lane) @116-117mph off 1.6x 60 footers and his car was around 270-280rwkW from memory. You will need a set of decent ET Radials or equivalent, take out whatever excess weight you have, I think 4.11s are a bit short for the better ratio box in the VE, but could be wrong, and you will likely need a clutch eventually. I believe that if you can get a 1.6x-1.7x 60 footer (which is not easy in a manual as best I could ever get was 1.7x) on a cooler night you'll be pretty close to an eleven. I chased an 11 in my old manual and closest I got was 12.005 @ 118mph of a 1.7 60 and 280rwkW (small cam 218/224 H/C LS1). Good luck. BTW, lemme know when you head down to drags as based on profile we live somewhere near each other and I was only down there the other week. not enough people up here interested in it.

Cheers for the info, I realised the intake air temp wouldnt be correct however I never thought about how it effects the fueling as well as the timing, next time I go down I might need to put the wideband in so I can see if the fuelings going far out. The reason for the 4.11 is I am currenty crossing the line at around 4900RPM in 4th with a 3.45 diff, with 4.11s that should be about 5800, from what I've read you should aim to cross the line as close as possible to redline in direct (4th in this case). Also in the back of my mind is the possiblity of launching the car in 2nd, getting rid of one of my granny shifts should help my cause but I'm not sure how the clutch will handle it, the effective ratio of 1st gear + 3.45s is still a lot lower than 2nd gear + 4.11s.
I will let you know when I'm heading down next, dont get there as much as I'd like to but I'm hoping to have the 4.11s sorted soon so I can head back down for a go.

[ittwgn]

as stated get some et streets and take out some weight !!!! not sure if you have the power to launch in 2nd !!!! might just bog down !!tyres make a huge difference !!

[LS1TOY]

As said get some good tyres, et street cross plys are best for the m6. 6000rpm clutch dump in first. 100 percent tps is better. Don't side step just lift off quickly. Oh and have a decent clutch in it.
Jake,

[bush_basha]

As said you will need a decent clutch and you want to ride the clutch not dump it but slowly but quickly release it at about 6k. And of course if you do that you'll need better tyres.

[Xjas]

Drove down to Eastern Creek today to test out my new 4.1 gears, was in line at 9.30 but missed the cutoff by 6 cars, grrrrrrrrr.

[ittwgn]

it was an absolute shitfight I got there at 8.15

[blackvussii]

Def try and get some et streets or slicks. I've just started going to the track this year. On street tyres in a vu so a little lighter and small cam, couldn't get my 60f below 2.09, ran 13.09 at 110. Bought some second hand et's for $70 off gumtree went out on wed and with a pretty gentle launch at 3.5k went 12.7 @ 112mph with a 1.89 60f. Going to get the tune touched up and spare axles and go for 5k+ next time. I have sl springs and was getting a bit of tramp but the mt's got rid of that.