3.54 gears in my Dana 60? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Heavy Evy · 10-03-2008, 06:40 PM

I have been thinking about changing the gears out of my dana 60, I want to put 3.54's in they are 4.10 right now and are too low especially since im running at the track and I'm not hauling anything except ass well I try to haul ass haha But im curious if anyone has ever done this and what they think of the of the higher gears?

**special-K** · 10-04-2008, 08:57 AM

My`72 K2500 has them with a TH350.It moves out like a C/10 or car.I chirp second with 12.50/33s.They have enough grunt and like to roll out.I think they are in a sweet spot for a heavier vehicle.

**kwmech** · 10-04-2008, 02:16 PM

They are the factory ratio with most of the big block trucks. I have them in my 68 with a 396

Heavy Evy · 10-04-2008, 11:34 PM

Yeah thats what I want im just topping out to fast at the track with the 4.10's and I'm going to be running a 200 shot nos next season so I need somthing thats not going to be topped out half track.

**kwmech** · 10-06-2008, 01:51 PM

The swap is only going to give you a 14% difference.

Heavy Evy · 10-06-2008, 10:30 PM

So do you think it would be a waste of money then? Because when I did the math (if I did it right) I should gain about 15+ mph bringing my 83 mph to 98mph in the 1/4

**special-K** · 10-07-2008, 07:23 AM

I dunno.To put it real simple you will gain about a 1/2 turn of the wheels to one turn of the motor at all speeds.From a bit over 4 turns to a bit over 3 1/2.14% sounds right and that`s a good bit.It`s like having an 86% final drive,about 1/2 the gain from o/d @70%.

**kwmech** · 10-07-2008, 03:13 PM

I come up with 99 mph. How about a gear swap and a taller tire? What engine are you running?, trans?

Heavy Evy · 10-07-2008, 08:30 PM

99 mph would be great! The tires I was running at the track are 31/10.50/16.5 bfg at's haha old skool and don't like them, im going to be putting some 285/60/16's on the rear and 255/50/16's on the front soon and I will probably be running slicks next season too. The motor is 383 stroker with all the goodys cam heads roller rockers headers intake carb etc. The trans is a TH350 stocky but its been rebuild and its going to get a shift kit soon. I just want to get my truck down to 14's all motor and hopfully 13's maybe a 12.9 with nos Im not trying to build a 10 second truck here

10-03-2008, 06:40 PM	#1
Heavy Evy born to lose Join Date: Sep 2008 Location: Salt Lake City, Utah Posts: 842	3.54 gears in my Dana 60? I have been thinking about changing the gears out of my dana 60, I want to put 3.54's in they are 4.10 right now and are too low especially since im running at the track and I'm not hauling anything except ass well I try to haul ass haha But im curious if anyone has ever done this and what they think of the of the higher gears? __________________ _____________________ '67 Chevy Belair Wagon 283 Powerglide '68 Chevy II Nova 2 door 350 TH400 Sold!! '71 Chevy C20 350 TH350 '71 Chevy C10 Burb 350 TH350 stolen totalled gone.... Burb Build http://67-72chevytrucks.com/vboard/s...d.php?t=475155 Nova Build http://67-72chevytrucks.com/vboard/s...d.php?t=498979 Wagon Build http://67-72chevytrucks.com/vboard/s...d.php?t=543052 Not giving a truck. Last edited by Heavy Evy; 10-04-2008 at 01:23 AM.

10-04-2008, 08:57 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 3.54 gears in my Dana 60? My`72 K2500 has them with a TH350.It moves out like a C/10 or car.I chirp second with 12.50/33s.They have enough grunt and like to roll out.I think they are in a sweet spot for a heavier vehicle. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 10-05-2008 at 12:22 PM.

10-04-2008, 02:16 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,480	Re: 3.54 gears in my Dana 60? They are the factory ratio with most of the big block trucks. I have them in my 68 with a 396

10-04-2008, 11:34 PM	#4
Heavy Evy born to lose Join Date: Sep 2008 Location: Salt Lake City, Utah Posts: 842	Re: 3.54 gears in my Dana 60? Yeah thats what I want im just topping out to fast at the track with the 4.10's and I'm going to be running a 200 shot nos next season so I need somthing thats not going to be topped out half track. __________________ _____________________ '67 Chevy Belair Wagon 283 Powerglide '68 Chevy II Nova 2 door 350 TH400 Sold!! '71 Chevy C20 350 TH350 '71 Chevy C10 Burb 350 TH350 stolen totalled gone.... Burb Build http://67-72chevytrucks.com/vboard/s...d.php?t=475155 Nova Build http://67-72chevytrucks.com/vboard/s...d.php?t=498979 Wagon Build http://67-72chevytrucks.com/vboard/s...d.php?t=543052 Not giving a truck.

10-06-2008, 01:51 PM	#5
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,480	Re: 3.54 gears in my Dana 60? The swap is only going to give you a 14% difference.

10-06-2008, 10:30 PM	#6
Heavy Evy born to lose Join Date: Sep 2008 Location: Salt Lake City, Utah Posts: 842	Re: 3.54 gears in my Dana 60? So do you think it would be a waste of money then? Because when I did the math (if I did it right) I should gain about 15+ mph bringing my 83 mph to 98mph in the 1/4 __________________ _____________________ '67 Chevy Belair Wagon 283 Powerglide '68 Chevy II Nova 2 door 350 TH400 Sold!! '71 Chevy C20 350 TH350 '71 Chevy C10 Burb 350 TH350 stolen totalled gone.... Burb Build http://67-72chevytrucks.com/vboard/s...d.php?t=475155 Nova Build http://67-72chevytrucks.com/vboard/s...d.php?t=498979 Wagon Build http://67-72chevytrucks.com/vboard/s...d.php?t=543052 Not giving a truck.

10-07-2008, 07:23 AM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 3.54 gears in my Dana 60? I dunno.To put it real simple you will gain about a 1/2 turn of the wheels to one turn of the motor at all speeds.From a bit over 4 turns to a bit over 3 1/2.14% sounds right and that`s a good bit.It`s like having an 86% final drive,about 1/2 the gain from o/d @70%. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-07-2008, 03:13 PM	#8
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,480	Re: 3.54 gears in my Dana 60? I come up with 99 mph. How about a gear swap and a taller tire? What engine are you running?, trans?

10-07-2008, 08:30 PM	#9
Heavy Evy born to lose Join Date: Sep 2008 Location: Salt Lake City, Utah Posts: 842	Re: 3.54 gears in my Dana 60? 99 mph would be great! The tires I was running at the track are 31/10.50/16.5 bfg at's haha old skool and don't like them, im going to be putting some 285/60/16's on the rear and 255/50/16's on the front soon and I will probably be running slicks next season too. The motor is 383 stroker with all the goodys cam heads roller rockers headers intake carb etc. The trans is a TH350 stocky but its been rebuild and its going to get a shift kit soon. I just want to get my truck down to 14's all motor and hopfully 13's maybe a 12.9 with nos Im not trying to build a 10 second truck here __________________ _____________________ '67 Chevy Belair Wagon 283 Powerglide '68 Chevy II Nova 2 door 350 TH400 Sold!! '71 Chevy C20 350 TH350 '71 Chevy C10 Burb 350 TH350 stolen totalled gone.... Burb Build http://67-72chevytrucks.com/vboard/s...d.php?t=475155 Nova Build http://67-72chevytrucks.com/vboard/s...d.php?t=498979 Wagon Build http://67-72chevytrucks.com/vboard/s...d.php?t=543052 Not giving a truck. Last edited by Heavy Evy; 10-07-2008 at 08:32 PM.



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