2.93 gears?

[Gunner1]

So I just got my tach working. 80mph at 3000rpm with 28 tall tires. Converter flashes to 2800 in 3rd. Figure a 6% slip. Figures closest to a 2.93. It was a factory 318 auto. No wonder it’s a freeway flyer. Since I have a small pinion carrier I will upgrade to a large pinion with a posi or locker. Maybe 3.91s for street/strip.

 

[R413]

All depends on the intended use of the vehicle.

 

[road robert]

3:91s are perfect for around town and backroads to 55/60 mph, BUT NOT HIGHWAYS! I have a 4 speed and at 70 mph taching at ~ 3900 RPMs. A 3:55 would be better for the street. I drive my car and wish I had a 5th gear, always avoid highways on cruises.

 

[Gunner1]

Mostly cruise night stuff and drags. Just never heard of 2.93s before.

 

[#41]

Maybe 2.94 as it is a common 8-3/4 ratio.

 

[ykf7b0]

Mostly cruise night stuff and drags. Just never heard of 2.93s before.

Based on your intensions 3.91 or 4.10’s will serve you well. You will also want to avoid any highway with more than 55 mph speed limit.

 

[493 Mike]

Maybe 2.94 as it is a common 8-3/4 ratio.

So are 2.91s.
Mike

 

[1967coronet]

If your 741 / 2.94 ? Gear set is in good shape. Keep it in one piece.
Get a 742 or 489 for your new gear set.
You may want to run the power tour ect. Someday.

 

[Hilljack68]

I will upgrade to a large pinion with a posi or locker.

I hate to be the one, but... Sure-Grip

 

[Bighouse]

Years ago I had a Camaro. 383 stroked small block, 4 speed and a 2.56 posi. That car was faster than the speed of sound. A little rough on the clutch but it was fun!!!

 

[33 IMP]

A friend had a late 70s camaro with a 305 and 2.56 gear.
We drove home from Bowling at 1 a.m. one night on the freeway at 75.....in second gear .
Neither of us noticed till we got off the freeway.

 

[WileE]

A friend had a late 70s camaro with a 305 and 2.56 gear.
We drove home from Bowling at 1 a.m. one night on the freeway at 75.....in second gear .
Neither of us noticed till we got off the freeway.

I got a photo of you that time

 

[33 IMP]

I got a photo of you that time View attachment 1477857

I've done that a lot, but facing the other way, shooting at unmakable splits. I get one of em, about 75% of the time.

 

[Cranky]

So are 2.91s.
Mike

Heard of 2.76's....think there's still one hanging around here but never seen a 2.91 for an 8 3/4.

 

[BSB67]

I got a photo of you that time View attachment 1477857

That made me laugh out loud.

 

[493 Mike]

Heard of 2.76's....think there's still one hanging around here but never seen a 2.91 for an 8 3/4.

My 65 Coronet is so equipped. Probably a 741 hsg.
Mike

 

[Bighouse]

Years ago I had a Camaro. 383 stroked small block, 4 speed and a 2.56 posi. That car was faster than the speed of sound. A little rough on the clutch but it was fun!!!

I swear that pinion was 1/2 the size of the ring gear.

 

[Richard Cranium]

Years ago I had a Camaro.

I’m sorry to hear that.

 

[Black_Sheep]

I have a Mopar 8.75 sure grip with 3.55’s in my ‘58 Apache, it’s a nice all around ratio for a cruiser. Acceleration is decent and rpm’s on the interstate are tolerable.

 

[ykf7b0]

I have a Mopar 8.75 sure grip with 3.55’s in my ‘58 Apache, it’s a nice all around ratio for a cruiser. Acceleration is decent and rpm’s on the interstate are tolerable.

Same here in my 69 roadrunner but I stay off I-40.