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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: AARCONV]
#2986675
11/19/21 08:32 AM
11/19/21 08:32 AM
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Joined: May 2019
Posts: 6,245
nowhere
Sniper
master
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master
Joined: May 2019
Posts: 6,245
nowhere
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I believe the torque converter will be involved too in the calculation That is why I specifically mentioned "assuming no slippage" in my response. Real cars have three pedals.
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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: 71redcuda]
#2986719
11/19/21 11:21 AM
11/19/21 11:21 AM
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Joined: Jan 2012
Posts: 2,645
Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,645
Stuttgart, Arkansas
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My 4-speed Hemicuda had 4:10's and F60 Polyglas GT's. It redlined at 125 or so. Redline is 6500 so 3250 would has been 62 mph. Mine was 4 speed though so no slippage. Your RPM's sounds like 4:10's. If the Dana doesn't have a tag, just jack the car up and turn the back tires one revolution by hand. If the driveshaft turned 3-1/2 times it's a 3:54, if it turned 4 times it's a Dana.
2011 Drag Pak Challenger
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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: 440lebaron]
#2987831
11/22/21 02:14 PM
11/22/21 02:14 PM
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Joined: Feb 2009
Posts: 892
Illinois
StrkrDart69
super stock
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super stock
Joined: Feb 2009
Posts: 892
Illinois
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JACK up car rotate rear wheel one turn , driveshaft should turn 4.1 times This. If you do not know how to do this. Makes me wonder how you own the car?
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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: 1969ronnie]
#2987848
11/22/21 02:43 PM
11/22/21 02:43 PM
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Joined: Jul 2003
Posts: 3,267
Connecticut
1972CudaV21
master
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master
Joined: Jul 2003
Posts: 3,267
Connecticut
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Hi 71 , my buddy has a 70 challenger with a 440 , 4 speed , Dana with 4.10s . Rear tires are 255-60-15 or G60-15 . Spins exactly 4,000 RPM at 70 mph .  He gets passed by ricer cars and mini vans and HATES driving it on the highway ! Cars with that setup were designed for the 1/4 mile. Completely unpractical on todays’s modern highways.
China is the enemy.
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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: 1972CudaV21]
#2988083
11/23/21 01:21 AM
11/23/21 01:21 AM
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Joined: Jan 2003
Posts: 27,468
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Hi 71 , my buddy has a 70 challenger with a 440 , 4 speed , Dana with 4.10s . Rear tires are 255-60-15 or G60-15 . Spins exactly 4,000 RPM at 70 mph . He gets passed by ricer cars and mini vans and HATES driving it on the highway ! Cars with that setup were designed for the 1/4 mile. Completely unpractical on todays’s modern highways. The speed limit on today’s highways is not really any higher than 1966 to 1971. 
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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: Sniper]
#2988136
11/23/21 10:05 AM
11/23/21 10:05 AM
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Joined: Jan 2003
Posts: 3,921
Richmond, Indiana
19swinger70
master
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master
Joined: Jan 2003
Posts: 3,921
Richmond, Indiana
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My 51 came stock with 3.90's. And a three on the tree and a flathead 6. Must of been a terror in the dragstrip.
1951 and 1952 Plymouths were heavily involved in the 51 and 52 Nascar seasons, pretty much bone stock. Johnny Mantz won the inaugural Southern 500 in 1950 driving a stock 50 Plymouth. 500 miles of WOT.
I think your friend is just afraid to drive his car. I agree with your last sentence. My 70 dart has a 340,727, 4.10 gears and 245/60 R15 tires in the rear. At 70 mph, the 340 is turning somewhere between 3600 and 4000 rpm. It screams at highway speeds. Does that stop me from driving it on long cruises? NOPE! I have done poker runs and cruises that are hundreds of miles with the car screaming, and never hurt the car. I have had this car and combo on the road since 2001, and it is a ton of fun.
1970 340 swinger. sublime
1967 barracuda fastback BB
55 Plymouth Project
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Re: How much does a 4.10 gear ratio car rev in 60 mph ?
[Re: 19swinger70]
#2988198
11/23/21 12:17 PM
11/23/21 12:17 PM
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Joined: Nov 2020
Posts: 348
Isle of Sheeps
Gtxxjon
enthusiast
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enthusiast
Joined: Nov 2020
Posts: 348
Isle of Sheeps
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Nice Mopar Niklas! Do you know Peter Jenslund from San Fernando Valley LA? Wow a 71 Cuda, does it get any better??? I just got a dana 60 from a 70 Challenger race-car with a STP 4-10 ratio. They guy was saying how crazy it was on the Motorway 4000 at 70 mph. I said fit bigger tyres and you will be fine lol... But instead he has put an 8-3/4 with 3-54's, back as it should be. My Moparmate had the old Richard Hammond's (Top Gear) 69 Charger for a while. It was an R/T car with a STP 4-10 with a 4 speed. It made FIRST GEAR totally useless and made it a THREE speed lol...
Last edited by Gtxxjon; 11/23/21 12:18 PM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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