CLASS RACER FORUM - View Single Post - Starting line ratio for manual transmission application

Rory McNeil · 01-05-2021, 10:48 PM

I am assuming the original poster must have a low gear ratio of 2.76, which is quite tall for a drag car, especially as it looks like he has a fairly big tire on there. Going to 5.57s should increase his trap RPM around 600 RPM, but I would also be looking for a lower first gear in the transmission. What the current 60 foot and 330 numbers, and what size tires on the car would be helpful.

01-05-2021, 10:48 PM	#7
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,311 Likes: 317 Liked 1,106 Times in 303 Posts	Re: Starting line ratio for manual transmission application I am assuming the original poster must have a low gear ratio of 2.76, which is quite tall for a drag car, especially as it looks like he has a fairly big tire on there. Going to 5.57s should increase his trap RPM around 600 RPM, but I would also be looking for a lower first gear in the transmission. What the current 60 foot and 330 numbers, and what size tires on the car would be helpful. __________________ NHRA 6390 STK M/S 85 Mustang