Starting line ratio too steep?

Jeff Stout · 06-15-2020, 09:31 AM

I run a 28x10.5 tire 400 sbc at 600hp. I went from 4.30 to 4.88 and run 400t trans. No problem on prepped track. The rpm curve when releasing trans brake looks very nice. The dip is very little to none. Now when I race no prep this set up won't work. I run a 4 link car and double adjustable all the way around and can not get it to leave decent. To much SLR. I have tried second gear leave but with a 6100 converter it just drives through it. If my math is right 2.48 first and 4.30 gear is the same as 2.20 first and 4.88 gear. So maybe first gear change would help the SLR.

06-15-2020, 09:31 AM	#8
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: Starting line ratio too steep? I run a 28x10.5 tire 400 sbc at 600hp. I went from 4.30 to 4.88 and run 400t trans. No problem on prepped track. The rpm curve when releasing trans brake looks very nice. The dip is very little to none. Now when I race no prep this set up won't work. I run a 4 link car and double adjustable all the way around and can not get it to leave decent. To much SLR. I have tried second gear leave but with a 6100 converter it just drives through it. If my math is right 2.48 first and 4.30 gear is the same as 2.20 first and 4.88 gear. So maybe first gear change would help the SLR.