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drag diff gears


canedkydd

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  • Member
  • Member For: 3y 10m 10d
  • Gender: Male
  • Location: Wellington New Zealand

I see some pretty impressive numbers posted. question I have is what ratio diff gears are you running ?  and why ?  I have run many v8 cars down the strip and understand the advantage of say a 4.11 ratio diff but I am new to turbo cars and the boost and torque curves they produce. any advise greatly appreciated.

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  • Member
  • Member For: 3y 10m 10d
  • Gender: Male
  • Location: Wellington New Zealand

stock BA 4spd auto box. at this stage stock stall converter but plans for a 3000 stall down the track. rev limiter I will get a flash done to raise the rev limit. what can you safely rev a barra to on stock springs ?  yes plans to also do springs

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  • less WHY; more WOT
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  • Member For: 15y 11m 18d
  • Gender: Male
  • Location: Melbourne

stock you're limited to about 5,500 or so, the stock rev limit... revving much over 6,500 requires significant engine upgrades.

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  • 7 months later...
  • Member
  • Member For: 3y 10m 10d
  • Gender: Male
  • Location: Wellington New Zealand

ok ran it in pretty stock form. 60 foot best was 2.2  but managed a 13.6 @ 105mph   what do you guys recommend is best out of stall converter or lower diff gears to get that 60 foot down and run a quicker qtr mile ?  

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  • Puff
  • Gold Donating Members
  • Member For: 9y 1m 27d
  • Gender: Male
  • Location: South Australia

More power. I've done a 1.99 60ft, launching in second gear on the road in my fat arsed territory, so a sedan should have no worries going quicker on the strip.

 

So yerp, ya need more power. :launch:

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  • Member For: 3y 10m 10d
  • Gender: Male
  • Location: Wellington New Zealand

yep more power is always the answer. have just done the exhaust and next step is a retune. will do valve springs and probably a stall converter as that is stuff I can do then chuck her in for that tune. If I can hit 1.99 60ft I will be stocked as that will mean I will deff dip into the 12's

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