Chevy Nova Forum banner

1 - 14 of 14 Posts

·
Registered
Joined
·
9 Posts
Discussion Starter #1
Hey everyone,
Just wondering what you guys are taching at 60. I just picked up a 67 and noticed it revs pretty high (in my opinion) at 60. I'm taching around 2500 RPM's at 60. It's got a TH 350 Transmission and I'm pretty sure it has the stock 3:08 rear end pushed by 355.

Thanks
Mike V
 

·
Registered
Joined
·
1,095 Posts
Mine didn't have a tach in it, but I kept it at 60 mph with the 4.10 gears and 275/60 tires. I assume it was around 32-3300.
 

·
Registered
Joined
·
385 Posts
Hey everyone,
Just wondering what you guys are taching at 60. I just picked up a 67 and noticed it revs pretty high (in my opinion) at 60. I'm taching around 2500 RPM's at 60. It's got a TH 350 Transmission and I'm pretty sure it has the stock 3:08 rear end pushed by 355.

Thanks
Mike V
What size tires do you have? (Width, height ratio, wheel diameter) You're missing one final piece to the puzzle if you want to know what your gear ratio really is.
 

·
Registered
Joined
·
2,950 Posts
i'm at 2150 RPM at 70, not a sure number at 60 mph. an this is with 0.70 OD an a 3.55 an 26'' tire. but i'm bettin at around 1850 for 60 mph.
 

·
Premium Member
Joined
·
2,106 Posts
I don't know about 60, but I'm turning about 3000rpm at 65mph with a 3.73 year and a 255/60-15 tire. Its 3500 at 75mph. A 2500rpm cruise engine speed isn't bad. You can drive all day at 4000rpm if you can keep it from overheating.
 

·
Registered
Mike - 74 Nova Baltimore, MD
Joined
·
1,601 Posts
At 60 mph, I'm at about 2130 rpm... but I am using a 2004R with a .67 OD, plus a lock-up converter, and a 4.10 rear running 26" dia tires.

Below is a link to a very simple calculator for determining engine rpm at a given speed based on your drive train and rear tire diameter.
Note: The calculator does not compensate for torque converter slippage (automatic w/o lock-up convertor).
https://www.crawlpedia.com/rpm_gear_calculator.htm
 

·
Registered
Joined
·
1,493 Posts
I see just under 2,000 rpm with a TH400 (1:1 3rd gear), 2.56 rear end, and 26.5" tires.

I plan to go much lower with the rear end ratio. When I do, I won't be surprised to see 3,000+ rpm at 60 mph.
 
1 - 14 of 14 Posts
Top