4.10s in a stock 10 bolt
04-14-2013, 06:35 AM
#22
10 Second Club
iTrader: (8)
I had 3.90's for roughly 30K miles before the pinion broke. M6 car, 600+ rwhp on spray with drag radials however I didn't launch it hard often.
After the pinion broke, I went with 4.10's and wish I would've done it sooner.
Despite the comments above, there is a noticeable difference between the two. Some argue the 4.10's are too short and run through the gears too quickly whereas others can't stand the short "dead spot" with the 3.90's. At the end of the day, it comes down to personal preference -- I accepted the quicker run through the gears in exchange for completely eliminating the dead spot in the range.
First trip to the track (road course, not the drag strip) with the 4.10's are coming next Friday, so I'll let you know how I feel about them after that event.
After the pinion broke, I went with 4.10's and wish I would've done it sooner.
Despite the comments above, there is a noticeable difference between the two. Some argue the 4.10's are too short and run through the gears too quickly whereas others can't stand the short "dead spot" with the 3.90's. At the end of the day, it comes down to personal preference -- I accepted the quicker run through the gears in exchange for completely eliminating the dead spot in the range.
First trip to the track (road course, not the drag strip) with the 4.10's are coming next Friday, so I'll let you know how I feel about them after that event.
3.90's)......your packin gear in a car that can not be used from a dead stop with a 10bolt. The gear is most useful from a dead stop with traction. Your also recommending **** and have no hard #'s to back it up.To be honest op it seems your car is a bolt-on car or has a mild cam by your hp #'s. 3.73's might be a better choice for you.
05-01-2013, 08:32 AM
#25
4.10s will serve you well. BUT they will not change what rpm your engine will drop to on a shift. They will change the mph that you drop to but not the rpm. Check out the gear calculator at f-body.org/gears and put in any rear ratio and you'll see that whatever mph you're doing at the shift the next gear at that mph will always be the same rpm regardless or rear end ratio. To change what rpm the engine falls to on the shift you have to change the gear ratios inside the trans or shift at a higher rpm in the previous gear.
4.10s will let the engine rev faster as the car will accelerate faster and in the 1/4 you'll be in 4th gear longer through the lights, which is all good.
4.10s will let the engine rev faster as the car will accelerate faster and in the 1/4 you'll be in 4th gear longer through the lights, which is all good.
