How do you run a 1.8x or lower '60 time?

[Karl]

For those who have, how are you consistently running 1.8x or lower 60' times with a 6 speed 4th gen ZR-1?

Any specific or special technique? Burnout? Drag radials? Slicks? Feather the throttle?

The 4th gen Z seems to have a history of difficult 60' times. Guess this is the reason some have swapped to an auto for those who actually race their car.

I have never run better than a 2.1x 60' time and I know the car will run better.

Thanks in advance.

[Jagdpanzer]

315/35-17 DRs will get you there. Lower the pressure until you get 60’ times you want. Spindles will let you know if you tried to hard.


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[dredgeguy]

Ask Phil how he knows...............we had a great time at Mason Dixon drag strip. The Mustang club of Northern VA invited Wazoo to come out and play. Phil in the winners circle after smoking many of them. I even smoked a few but also got smoked when they hit that little button and scooted down the track. Lots of fun.

[Karl]

I am running a NITTO 335/30/18 drag radial. I had the car out yesterday and in the cool air it would not hook. Was in the mid 50's on standard asphalt and concrete.

Will be dropping the tire pressure and a light burnout next time.

I am debating on putting the oem a-molds back on with a better tire in the rear.

[DRM500RUBYZR-1]

At 70 degrees and up they should feel a lot stickier!
:cheers:
Marty

[Bradjon]

It’s tough to do with. Nitto drag radials i canget to 1.85 at best . I leave about 1800’and slowly roll into it . Going lower than20 psi make the times worse . I find for me doing a second gear. Burnout works best . Pete is someone to ask about this best time with headers and porter inj housing Is -2.10 at 119.47 it is on you tube under brad Taylor’s zr. 1

[Bradjon]

Other bad things that can happen. If you hook too well things in the back start breaking

[PhillipsLT5]

my best, 2.1 at 60ft/118mph/12.5et on street tires

[longhorns05]

It may be best to go down to 17" wheel like you are considering. Toyo Proxes TQ drag radials hooked better than Nitto drag radials on my blown foxbody, both sets were 275/40/17. The Toyo DR's are available as 315/35/17s if you're considering trying A molds.

Like mentioned above, things can break back there if you're too aggressive. I broke a half shaft on my first ZR-1 on my only pass in that car. That was with a 4k launch on Nitto DR's in the stock size. :sign12:

[Karl]

Yes I hear things out back, namely the 2x some odd splines will break with good power and good grip out back.

I have steel half shafts so that should help.

I'll text Pete and ask what he is doing. Last time we spoke about racing he was running I believe Nitro drag radials on the a mold wheels.

Hopefully it will get warm here soon.

[Jagdpanzer]

These Mark Williams 31 spline spindles will help build your courage.

11818


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[Pete]

Karl I have Nitto NT05R Drag Radial they work fine at the track.
Put them in the water box for 3 seconds and walk them out.
Start at 20 PSI.
Trust me they will work :)

I would do this with all Drag Radials no matter which brand you decide to go with.

Enjoy
Pete

[gtcollins@maxnet.co.nz]

My best time slip so far 1.98 Nitto G2s 17psi on a well prepared track when I run on street track I run Hoosiers 315x35x17 heat them up good in the first run then they are stick for the rest of the day just dry them off after the water box always warm days 70 plus 1181911820

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[Karl]

These Mark Williams 31 spline spindles will help build your courage.

11818


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Nice! Are these still available? I need to pull the rear wheels and confirm if the rear splines are stock on my car. I am pretty sure they are.

[Karl]

Karl I have Nitto NT05R Drag Radial they work fine at the track.
Put them in the water box for 3 seconds and walk them out.
Start at 20 PSI.
Trust me they will work :)

I would do this with all Drag Radials no matter which brand you decide to go with.

Enjoy
Pete


Will go for it. Been running at 32 psi.

Been thinking about a line lock for the burnout box.

Will see what happens in warmer weather.

[Jagdpanzer]

Nice! Are these still available? I need to pull the rear wheels and confirm if the rear splines are stock on my car. I am pretty sure they are.



You can get them direct from Mark Williams

https://www.markwilliams.com/50225.html

You will also have to send them a pair of rear bearing hubs for broaching out from 27 to 31 splines. Many thanks to FBI Bob G for pioneering this excellent solution with WM.


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[Jagdpanzer]

I run 315/35-17 MT DRs at around 16 PSI. Just like Pete said, 3-4 seconds in the water box then let them push you out. Line lock makes it easy.


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[Bradjon]

2.1 on street tired is excellent

[RichS]

Definitely touchy finding the balance with these cars. I only have about 8 or 9 passes in my Z vs the GS. I either bogged or spun. I run the m/t drag radial (315/35/17) that I get 1.50 60's in the GS with. When my GS was stock cube I was able to get it down to low 1.7's so I figure I need some more seat time to try and get the Z 60' down. Obviously track prep plays a big part in it also for what it will hold, especially with a stick car. You really need to slide the clutch out instead of dumping it. I also do my burnout in 2nd and roll it out. Wanted to get it out this spring but the tracks are still on hold with this virus crap!


Summers brothers also makes a outer spindle that's been holing up in the GS.

[Bradjon]

Here are some other thoughts on this . My best 60 foots came when I had 410 s in the car . After I retired went back to 345s and my 60 fats hovered around 2.0 but my ets got a half a second slower . Which wasn’t much fun lol . I do run the light weight flywheel though . Talking with Pete he runs I believe a 19/20 lb flywheel which may help the 11 lb fidanza works well with the 4.10s but not so well with the 3.45s stk dual mass is about 45 lbs . Just remember the better you bite the more you can break . Hope this helps in some small way . Oh one might experiment with 245 x17 they have a taller sidewalk that might bite better