What RPM to launch T56 at the track?
#1
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My 89 has a Trex cammed 6.0 with the 6 speed, 4.30 gears on 26x11.5x16s and i launched at 5100 an bogged a touch and got a 1.9 60 foot, some are telling me too launch at 6000 but i was scared of breaking the trans, now that 2nd gear is gone from playing on the street i will be going back to the track when i get the trans rebuilt and i need to know what you guys launch at. I have a centerforce DFX clutch if it matters.
#8
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Mine was a trans from SSI 4a and I have a 12 bolt also(moser). On a good track I launch at 6000. a poor track around 4500. But depends on my tires,weather etc. I disconnect my swaybar for the track and loosen my shock settings for the track. If it bogs on launch I hit it harder next round. As close to same spot I launched the round before.
#13
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12 bolt is now a weak link too, if you race alot, and launch high, it's not going to last.
I launch at 6500, and cut consistant 1.42-1.44's, but blew up the 12 bolt 3 times... Nine inch stays quiet and takes the abuse like a champ.
12 bolts are fine in auto's for the most part, and 6 speeds that dont race alot.
The trans however, will take alot of abuse, although I did twist an input shaft.
I launch at 6500, and cut consistant 1.42-1.44's, but blew up the 12 bolt 3 times... Nine inch stays quiet and takes the abuse like a champ.
12 bolts are fine in auto's for the most part, and 6 speeds that dont race alot.
The trans however, will take alot of abuse, although I did twist an input shaft.
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i launch at 5500 -6000, have a moser 12 bolt and cut 1.4s on a 4.10 gear, havent broke the rear yet. but definatly a new ds. i run a monster clutch so i dont know anything about how well the centerforces are holding on high rpm launches