Dana 44 axle ratios for Avanti

[okc63avanti]

My 63 was is an R1 with automatic trans and air. What were the different axle ratios for Avanti cars and what would be the most likely axle ratio for my car?

Thanks,

<div align="left">John</div id="left">

<div align="left">'63 Avanti, R1, Auto, AC, PW (unrestored)</div id="left">

[StudeRich]

Standard on an R1 would be a 3.31, but you do not have to guess, the tin tag is under the rear axle cover screw at about 7:00, it will say: 3.07, 3.31, 3.54, 3.73, 4.09, 4.27, or 4.54 [:0]

It COULD have been ordered with a special order ratio as above or been changed over the years. The Limited-Slip Differential (Twin Traction) tag is on the right side of the cover and it does not matter if it says, 45B,C,D or whatever. If it has one, it is or WAS a TT.

You can cancel your duplicate post with the trashcan icon.


StudeRich at Studebakers Northwest -Ferndale,WA

[PackardV8]

quote:Standard on an R1 would be a 3.31

FWIW, most of the R1 automatics I've seen had a 3.73. Your results may vary.

thnx, jack vines

PackardV8

[blackhawk]

quote:Originally posted by PackardV8

quote:Standard on an R1 would be a 3.31

FWIW, most of the R1 automatics I've seen had a 3.73. Your results may vary.

thnx, jack vines

PackardV8

Yikes! Seems like that would make the car pretty impractical for highway driving. Wouldn't the engine be turning pretty darn fast at 70 mph? I find my Cruiser with 4-speed and 3:31 R/A revs too high for my tastes on the open road. It is turning about 3,000 RPM at 70 mph. I am really wishing it had overdrive. Dale

[StudeRich]

Only the R2's came with 3.73's

[PackardV8]

with stock 15" tires,

3.31 @ 3000 RPM = 74.2 MPH
3.73 @ 3000 RPM = 65.8 MPH

thnx, jack vines

PackardV8

[StudeRich]

Yes, they do turn 3000 RPM at 65.8 MPH with 3.73 gears, but it feels SO GOOD getting there! []

[blackhawk]

quote:Originally posted by StudeRich

Yes, they do turn 3000 RPM at 65.8 MPH with 3.73 gears, but it feels SO GOOD getting there! []

That's what I figured. I can appreciate that too! [}]
Dale

[jimmijim8]

How many rpm at 60------ 289 auto 3:31? jimmijim

[PackardV8]

2427

PackardV8

[sbca96]

My 1963 Avanti R1 came with a 3.73 pegleg and a T-86 3 spd manual.

It now has a 3.31 TT with TKO.

Tom

'63 Avanti, zinc plated drilled & slotted 03 Mustang Cobra 13" front disc/98 GT rear brakes, 03 Cobra 17" wheels, GM alt, 97 Z28 leather seats, soon: TKO 5-spd, Ported heads w/SST full flow valves, 'R3' 276 cam, Edelbrock AFB Carb, GM HEI distributor, 8.8mm plug wires

[jimmijim8]

quote:Originally posted by PackardV8

2427

PackardV8

I can live with that. thanks jimmijim