Posted By: can.al
2.94 rear gears - 01/31/14 02:12 AM
..for those using this gear set,how do you like it.
..long duration cams need not apply.
..long duration cams need not apply.
2.94 rear gears
Posted By: GTX MATT
Re: 2.94 rear gears - 01/31/14 02:16 AM
Nope, they suck IMO. Even with a stock 440 with 27 inch tall tires they got nothing on 3.55s
Posted By: MuuMuu101
Re: 2.94 rear gears - 01/31/14 02:23 AM
I've got them in my '68 Dart. If you're looking for fun, don't get them. You want gas mileage, they do a pretty good job. I run a tired 273 behind a 904 and an open 7 1/4. I also run a 205/75/14 tire (26 inches tall). Let's just say I was going up a slight hill one time with my foot pegged on the gas and a late 90's Toyota Corolla passed me up. Besides that, I average high teens when it comes to mpg.
Posted By: 469runner
Re: 2.94 rear gears - 01/31/14 03:02 AM
Well, I guess I'm the odd man out. I do have 2.94s in my 1970 Roadrunner and think it is a great gear for my combo and how I use the car. Running on the highway it is doable, and I have no problem with acceleration with a stroked 469 engine. In fact I was able to run a 12.48 in the 1/4 mile with this car. 3.55s are fun around town, but not on the highway with the engine screaming 3400 rpm at 60 mph while Hondas and Prius' climb our backs. It all depends on you set-up and how you intend to use the car.
Posted By: Skeptic
Re: 2.94 rear gears - 01/31/14 03:47 AM
Quote:
I've got them in my '68 Dart. If you're looking for fun, don't get them. You want gas mileage, they do a pretty good job. I run a tired 273 behind a 904 and an open 7 1/4. I also run a 205/75/14 tire (26 inches tall). Let's just say I was going up a slight hill one time with my foot pegged on the gas and a late 90's Toyota Corolla passed me up. Besides that, I average high teens when it comes to mpg.
Your problem isn't the gear ratio. A tired 273 makes less power than a late 90's Corolla-period. Hell, my 68 Barracuda with a tired 318 couldn't spin the tires with a 3:91 sure grip. Things are different now and I'm considering a 2.94 for my tunnel rammed 400. The thing made 472 HP @ 5300/ 489 ft/lbs @ 4700 on the dyno and rolled over @ 5400 rpm. No reason to spin it tight, and it's not a drag car anyhow.
Posted By: ahy
Re: 2.94 rear gears - 01/31/14 04:14 AM
I've got 3.23's and 20% OD... about the same as 2.76 with a 1:1 top gear. It works great. It cruises at around 2700@75 MPH. RPM is actually higher than it needs to be for cruising but its nice to have plenty of reserve power without downshift. As posted above, it depends on the combo. This in an E with 496 and moderately big cam (243@.050).
Posted By: dOc !
Re: 2.94 rear gears - 01/31/14 04:22 AM
I like my SHORT gearing ....and you will tooooo .....IF yurr motor has the "stones" to pull said SHORT-gear ... 
Posted By: mopar346
Re: 2.94 rear gears - 01/31/14 04:29 AM
My next built is a 71 Charger 500 with a Nascar theme for the highway and I was thinking of running 2.94s or even 2.76s behind a 440. It's an auto so it is my way of getting and overdrive, I figure the 440 should have enough torque to plus it no to mention it wont be a red light racer. But, yes, it will still need to get out of it's own way for me to be happy with it.
Posted By: GTX MATT
Re: 2.94 rear gears - 01/31/14 04:35 AM
Quote:
Well, I guess I'm the odd man out. I do have 2.94s in my 1970 Roadrunner and think it is a great gear for my combo and how I use the car. Running on the highway it is doable, and I have no problem with acceleration with a stroked 469 engine. In fact I was able to run a 12.48 in the 1/4 mile with this car. 3.55s are fun around town, but not on the highway with the engine screaming 3400 rpm at 60 mph while Hondas and Prius' climb our backs. It all depends on you set-up and how you intend to use the car.
3400 @ 60 sounds more like 4.30s than 3.55s, how tall are your tires 22 inches?
Posted By: Grizzly
Re: 2.94 rear gears - 01/31/14 04:36 AM
2.94's are OEM in my '84 Ram. 318, 2bbl, 833od, and 29" tires.
No probs here, the 3.09 1st grunts it from a stop sign at idle and with the overdrive I'm 1500 rpm out on the highway and getting 20mpg.
Be that much better in one of my old girls and their few hundred horsepower advantage.
No probs here, the 3.09 1st grunts it from a stop sign at idle and with the overdrive I'm 1500 rpm out on the highway and getting 20mpg.
Be that much better in one of my old girls and their few hundred horsepower advantage.
Posted By: Kern Dog
Re: 2.94 rear gears - 01/31/14 04:40 AM
Quote:
I like my SHORT gearing ....and you will tooooo .....IF yurr motor has the "stones" to pull said SHORT-gear ...
"Mister", you're off your meds again.
SHORT gears are higher numerically. ( 3.91, 4.10, etc )
TALLER gears are lower numerically. ( 2.76, 2.94, etc)
Posted By: dynamite
Re: 2.94 rear gears - 01/31/14 05:01 AM
I run with the 2;76 gears when I'm going on a trip,,ie; this years Hot Rod Power Tour..with 26 in tire and a stock HP 383..cruises great at 70 about 3k rpm..when the 493 goes back in after the tour the 3:55's go in.I have both gear chunks..just swap them out in the 8 3/4
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Posted By: can.al
Re: 2.94 rear gears - 01/31/14 05:10 AM
anyone running a 340 with a short duration cam in a light A body with 2.94's and a bit of a converter?
Posted By: dvw
Re: 2.94 rear gears - 01/31/14 05:13 AM
All depends on what kind of power you have. We've been 10.60 w/2.76 and 255/60 radials @3700lbs,10.08 w/3.23 and 275/60 radials.
Doug
Doug
Posted By: loren kraker
Re: 2.94 rear gears - 01/31/14 05:57 AM
Quote:Quote:
Well, I guess I'm the odd man out. I do have 2.94s in my 1970 Roadrunner and think it is a great gear for my combo and how I use the car. Running on the highway it is doable, and I have no problem with acceleration with a stroked 469 engine. In fact I was able to run a 12.48 in the 1/4 mile with this car. 3.55s are fun around town, but not on the highway with the engine screaming 3400 rpm at 60 mph while Hondas and Prius' climb our backs. It all depends on you set-up and how you intend to use the car.
3400 @ 60 sounds more like 4.30s than 3.55s, how tall are your tires 22 inches?
3.91 are 3000 @ 60mph with n50 tires
Posted By: dOc !
Re: 2.94 rear gears - 01/31/14 11:44 AM
Quote:Quote:
I like my SHORT gearing ....and you will tooooo .....IF yurr motor has the "stones" to pull said SHORT-gear ...
"Mister", you're off your meds again.my
SHORT gears are higher numerically. ( 3.91, 4.10, etc )
TALLER gears are lower numerically. ( 2.76, 2.94, etc)
Well MisterBERRI .... no lack-o-meds here ... but yurr "statement" is very-much flawed. And I have heard this
before and I put out the "bait"(my capping the word SHORT) and you grabbed-it .....IF what you say is "true" .... then a fat-tire car is limited to a 7" cheater slick. A big-inch motor is limited to a 225 slant six size. on and on and on .......
.....
Posted By: floridian
Re: 2.94 rear gears - 01/31/14 01:57 PM
The car in my pic has 2.94 gears single leg behind the 440 / 727. A great cruising and around town gear in my mind..
I am 58, been all around low geared cars. My A12 car ( when I was a senior in High school) had 4.10 gears.. What a pain...
Sometimes we read too much hot rod magazine and get STREET mixed up with RACING, I know my friends did when we were younger..
Now with that said, I have been thinking about 3.55 gears with a gearvendor od.. That would make my final ratio around 2.70. but that is $4K away...
Overall the 2.94 gears work great on what I do with my car..
I am 58, been all around low geared cars. My A12 car ( when I was a senior in High school) had 4.10 gears.. What a pain...
Sometimes we read too much hot rod magazine and get STREET mixed up with RACING, I know my friends did when we were younger..
Now with that said, I have been thinking about 3.55 gears with a gearvendor od.. That would make my final ratio around 2.70. but that is $4K away...
Overall the 2.94 gears work great on what I do with my car..
Posted By: skicker
Re: 2.94 rear gears - 01/31/14 03:06 PM
The rear and 727 in mine were removed from a 68 Charger with 2.94 gears. I have 3.23's in mine but the rear tires are 30" tall. If the Charger came factory with a 26" tire the difference in the gearing would be 24 points. (6 points of gear per 1 inch of tire) That would put me at 2.99 final ratio. According to the speedo which still has the correct speedo gear for the 2.94 in the transmission, I'm only off about a mph or so. Great for the highway but with a near bone stock 8-1 383 with a stock converter its a pig from a stop light. Average MPG is about 18 or 19.
Posted By: Grizzly
Re: 2.94 rear gears - 01/31/14 03:12 PM
Quote:
My A12 car ( when I was a senior in High school) had 4.10 gears.. What a pain...
Sometimes we read too much hot rod magazine and get STREET mixed up with RACING, I know my friends did when we were younger..
Couldn't agree with you more.
Vipers came with 3.07's and it appears to me that they don't seem to struggle with acceleration.
Posted By: MuuMuu101
Re: 2.94 rear gears - 02/01/14 12:06 AM
Quote:Quote:
I've got them in my '68 Dart. If you're looking for fun, don't get them. You want gas mileage, they do a pretty good job. I run a tired 273 behind a 904 and an open 7 1/4. I also run a 205/75/14 tire (26 inches tall). Let's just say I was going up a slight hill one time with my foot pegged on the gas and a late 90's Toyota Corolla passed me up. Besides that, I average high teens when it comes to mpg.
Your problem isn't the gear ratio. A tired 273 makes less power than a late 90's Corolla-period. Hell, my 68 Barracuda with a tired 318 couldn't spin the tires with a 3:91 sure grip. Things are different now and I'm considering a 2.94 for my tunnel rammed 400. The thing made 472 HP @ 5300/ 489 ft/lbs @ 4700 on the dyno and rolled over @ 5400 rpm. No reason to spin it tight, and it's not a drag car anyhow.
I will agree with you on that... Big horsepower and a numerically lower gear does sound like a nice combo.
Posted By: 383man
Re: 2.94 rear gears - 02/01/14 12:47 AM
Quote:Quote:Quote:
Well, I guess I'm the odd man out. I do have 2.94s in my 1970 Roadrunner and think it is a great gear for my combo and how I use the car. Running on the highway it is doable, and I have no problem with acceleration with a stroked 469 engine. In fact I was able to run a 12.48 in the 1/4 mile with this car. 3.55s are fun around town, but not on the highway with the engine screaming 3400 rpm at 60 mph while Hondas and Prius' climb our backs. It all depends on you set-up and how you intend to use the car.
3400 @ 60 sounds more like 4.30s than 3.55s, how tall are your tires 22 inches?
3.91 are 3000 @ 60mph with n50 tires
I agree with that about 3.91's. I run 4.30's and a 30" tall tire and I run 3200 rpm at 60 mph. But this eng loves it as it sings real nice cruisin along at 3200. Ron
Posted By: 469runner
Re: 2.94 rear gears - 02/01/14 02:39 AM
Quote:OK, so I was guessing. I don't know the exact engine speed at 60 mph with 3.55s All I know is I've had my share of short gears in these cars, maybe its just old age, or being spoiled by my daily driver loafing along at 2000 rpm at highway speed, but I just don't believe we need to be winding these engines out to get good performance if we have planned our builds. For all out acceleration, I agree nothing beats torque multiplication.Quote:
Well, I guess I'm the odd man out. I do have 2.94s in my 1970 Roadrunner and think it is a great gear for my combo and how I use the car. Running on the highway it is doable, and I have no problem with acceleration with a stroked 469 engine. In fact I was able to run a 12.48 in the 1/4 mile with this car. 3.55s are fun around town, but not on the highway with the engine screaming 3400 rpm at 60 mph while Hondas and Prius' climb our backs. It all depends on you set-up and how you intend to use the car.
3400 @ 60 sounds more like 4.30s than 3.55s, how tall are your tires 22 inches?
Posted By: larrymopar360
Re: 2.94 rear gears - 02/01/14 02:57 AM
I love them. I have them in all three of my cars. All have factory 15" wheels and 235/70/15 tires. One is MP 360, one is factory E58 360 and one is factory 318-4. They are perfect for me for mixed driving. I had 3.21 in another old police car that I also had a MP 360 and 727 trans and there were annoying after any more than about 15 minutes at highway speed.
Posted By: a12rag
Re: 2.94 rear gears - 02/01/14 05:01 AM
That was the original gear in my 74 Duster360. I went to 3.55:1 and really didn't notice that much difference, other than higher rpms on the highway . . . stock E58 360, 727 auto with factory stall convertor (approx. 2600rpm), and 235/60/14 tires. . . .
Before taking trip to Carlisle in 1999, change complete rear end out, for one from Gold Duster, with 2.45:1 gear !! YEAH !! I like to drive long distances, and this makes a great package, rpms are about 2600 RPM @ 70 mph, 22mpg all day long !! . . . haven't changed em since !
Gotta look at what you are using your car for, and build it for you !!!
Cheers
Mark
Before taking trip to Carlisle in 1999, change complete rear end out, for one from Gold Duster, with 2.45:1 gear !! YEAH !! I like to drive long distances, and this makes a great package, rpms are about 2600 RPM @ 70 mph, 22mpg all day long !! . . . haven't changed em since !
Gotta look at what you are using your car for, and build it for you !!!
Cheers
Mark
Posted By: dOc !
Re: 2.94 rear gears - 02/01/14 05:06 AM
I have had a 2.76 in my 62 since the mid-90's ....would not have it any other way ...OTHER THAN maybe a weekend blast out on some "Telegraph or Woodward" action ... then a 4.88 or 5.13 would go in there 
Posted By: rapom
Re: 2.94 rear gears - 02/02/14 01:05 AM
I got 2.94's in my 68 charger with a mild stroked 406 with A/C and power steering. Ran an easy 13.28 at the quarter and cruises are nice and easy. Also have a 67 Coronet with a 493, gear vendors and a 3.55. Haven't run it at the strip yet but I can tell you it cruises real nice.
Posted By: RodStRace
Re: 2.94 rear gears - 02/02/14 03:12 AM
I'd be interested in DR. Diff doing a 2.XX geared center section!
Posted By: moparcanuk
Re: 2.94 rear gears - 02/03/14 05:05 AM
I'm running 3:23 gears with 28" tires which is equivalent to 3:00. Since I mostly cruise as oppose to race, it's perfect. I can still light up the tires and get rubber between 1st and 2nd.
Posted By: jcc
Re: 2.94 rear gears - 02/03/14 05:32 PM
FWIW, 2.94 and lower will not fit an Alum MP housing without a lot of grinding, I think, since I yet to grind on mine.
Posted By: closer9
Re: 2.94 rear gears - 02/03/14 05:43 PM
I've got a 2.94 Suregrip in my little cruiser with no complaints. I plan on running it till I can come up with an affordable overdrive setup. Cruises great on the highway, still chirps the tires around town, but then I've never implied I had a race car...
Posted By: Brian_wo
Re: 2.94 rear gears - 02/04/14 01:29 PM
My 67 vert came with 2.94s,those are being replaced by a set of 3.55s.
Quote:
I've got a 2.94 Suregrip in my little cruiser with no complaints. I plan on running it till I can come up with an affordable overdrive setup. Cruises great on the highway, still chirps the tires around town, but then I've never implied I had a race car...
Posted By: ERAT340
Re: 2.94 rear gears - 02/08/14 04:59 AM
What do yall thinkof this . Finishing up a Brewers 4 spd conversion, had him install a 309 1st gear, have a 2.76 rear, 340, mild 60401 voodoo,750 Holley HP, and 295-50-15. Havent tried it yet should be fun.
Posted By: mcmopars
Re: 2.94 rear gears - 02/08/14 06:03 AM
Quote:
..for those using this gear set,how do you like it.
..long duration cams need not apply.
depends on what you are after,for the most part they are sh#t for a reving 340.i mean who would want an a body with a 340 with those gears?unless your going to calfornia.i wouldnt.355 or 391
Posted By: mcmopars
Re: 2.94 rear gears - 02/08/14 06:07 AM
Quote:Quote:
..for those using this gear set,how do you like it.
..long duration cams need not apply.
depends on what you are after,for the most part they are sh#t for a reving 340.i mean who would want an a body with a 340 with those gears?unless your going to calfornia.i wouldnt.355 or 391
sorry dont where the a body 340 came from,still unless you have a 5-6 speed
Posted By: floridian
Re: 2.94 rear gears - 02/10/14 03:50 PM
Thought about this thread while driving my car this weekend.. My stock ( 375HP) 440 really does move my car around with the 2.94 gears really well.. Surprises me how fast it does get off the line and get to 50 really quick.. Makes me wonder if I do want to spend the money for higher gears and a GV overdrive....
OH, it was sunny and 72 here on Sunday....
OH, it was sunny and 72 here on Sunday....
Posted By: rapom
Re: 2.94 rear gears - 02/10/14 05:30 PM
I wouldn't. I would enjoy the 2.94 gears and spend or save your money elsewhere.
Posted By: Paul_Fancsali
Re: 2.94 rear gears - 02/10/14 06:46 PM
The sound of a small block going 3800 is music to me if your looking for gas mileage get a new car if you like to run fast up hills etc get3.55 3.91-4.30-4.56s. I will not even consider anything under 3.23. Consider that most of the older cars seldom see more then a few times out during the summer why worry about the rev's{ drive the car don't leave it as a hanger queen}If your car can't handle it then sell it and buy a new car and save the worry