getting my m6 vz thunder into the low 12s?

[awesome _vzss]

what brakes are on the rear of VZ SS Thunders?? thought they would clear a set of 15inch stockies easy



Anyways i know its auto v manual.
My VZ L76 Calais ran 11.89@116mph with a 1.54 60footer.

Made something around 255ish rwkw.
Mods - OTR, Full exhaust, 4500stall, 3.73 gears
Susp. - SL springs front, SLHD rears, Monroe GT Sports all round... Harrop cover if that counts. (very little to no tramp)
Tires - 195/70/15 random brand front on 15x6 ceptors, 235/60/15 ET Streets rear on 15x7 ceptors.
Full trim, minus spare tyre jack and sub box (still had the 2xMono blocks and 4channel in the boot)


Ill go find the exact details, but my mates car (RUN41T) VY SS Cammed M6 ran a couple of 11.9@118mph passes.
270ish rwkw 4.11s stockies as front runners and 235/60/15 ET Streets on 15x7 ceptors too.
6000+ rpm launches.

Sorry,accidently hit dislike.
Those are impressive figures
I should add my vz ss sedan m6 with 280rwkw went 11.9@113 with 1.78 60ft on some old pair of 235/60/15 my street radials.
No matter how low the tyre pressure was they wouldn't hook up and allowed it to wheelspin.
Next plan is to try some slicks.

[dogsballs]

radials DO NOT work like slicks, with the stiff sidewall if you drop too much psi the centre folds in. i've found ~21psi is spot on. you still need to get some heat into them in burnout. also suspension set-up plays a big factor.

[FAT-LSX]

Cheers mate I'll run 21psi, thanks for the heads up.. I'll give it a good 2nd gear burnout for 10secs to make sure I get some heat into them.

Picked them up for $51 on ebay for 2 of them! only been used for 1 track day, heaps of tread left so can't complain even if they dont work lol

[ittwgn]

in theory the circuit slicks dont work but as you got em cheap why not!!!! i run full slicks and the sidewalls are very soft allowing flex acting like a spring on launch!!!! seing they are a slick and not an et radial start off at 21psi see how it goes !!! if no good try 18 psi etc etc!!! cheers

[FAT-LSX]

Yeah I know they aren't gonna be ideal but surely they are going to be better than my cheap 19x245 road tyres?

I mean, craig lowndes ran a 10.8 or something in his v8 supercar on them ( I know obviously set up for them) but I'm sure it wouldn't have gone that quick on normal road tyres.
The way I see it anyway

Also, I'm guessing after a decent burnout the pressure should rise to 30+ psi so it may pay to get them down around 18. Like you said, it will be trial and error

[dogsballs]

ahh, missed they are a circuit slick. ask around and borrow some drag radials. waste of time with circuit slicks.

[FAT-LSX]

Have read mixed reports on using them at the track, works for some and some not. Like I said they cost me nothing so I'll see how they go for me after a long burnout

[ADO_SS]

15's will fit no problem. I have pursuit wheels on the back of mine at the moment so i would say they are your best option for drag racing

[FAT-LSX]

is yours a thunder with the bigger brakes?

[zorro]

Have read mixed reports on using them at the track, works for some and some not. Like I said they cost me nothing so I'll see how they go for me after a long burnout

Don't do a big burnout on them. Circuit tires have an different efficiency range so don't need to be as hot as a soft drag tire. Needless to say they will be better than any street tire and should get low 12s.

If it were me et slicks and launch just off the limiter, I got 1.6x 60" in an old 5.7 VU SS on slicks.

[Lincoln87]

http://www.youtube.com/watch?v=tlRmUI_oiuc

17inch circuit slicks. Didnt cost me nothing. I put them on because i didnt have a ANDRA license after i ran 11.9 on the ETs (and didnt want to get booted after 5 runs of a full drag day)
I got it down to a pretty low 12, which i was pretty surprised. I have no idea what pressure i was running however.