rear gears

[4eyedblonde]

What is a good rear ratio for streetability and good low end punch?
strong 440 with a TQ727, Ford 9",right now it has 3:15's. I was thinking min 4:10/11's. Not planning on alot of highway use so basically 0-speed limit ....quickly lol!
Opinions welcome

 

[Hemi Rebel]

Never heard of 3.15 gears. But 4.10 will get you where you want to be.

 

[67 B-body]

Or 4.30 depending on your tire size..... Limited MPH for everyday use will apply, but Oh boy you'll feel it from light to light!

 

[Montclaire]

I'd go 3.91s. Highway will not be fun with those but it will be do-able for short trips.

 

[MikeyT]

4:10's are awesome, but for me the best fit I have ever had in a big block mopar was 440 with 3600 stall converter and 3:91 gears. It was awesome between the lights!

Mike

 

[sublimegtx]

I have a 440/4, nice cam, built 727, 3500 stall with 4.10's and it's a tire roaster on demand. If I had the cash I'd prob change to 3.55 or 3.73 don't think it would really hurt my light to light.

 

[RedHot67]

3.23 is the best in my opinion.

 

[RustyRatRod]

Big blocks can pull numerically lower gears pretty danged good, so I would think a 3.91 would be good.

 

[crossram 426]

I have a 440 crossram 18 spline a833 and a 31 spline nine inch, not completed yet...but I have 3.5's in the 9" and I think they'd be a great allround gear

 

[65 Plymouth Satellite 426]

Highway Cruiser 3.55!

 

[4eyedblonde]

Is this ratio a Ford 9" or the Chrysler 8-3/4? I looked up Summit etc and could only find 3.89, 4.00 and the 4.11 ratio's etc. This was Richmond Gear.

 

[383man]

Or 4.30 depending on your tire size..... Limited MPH for everyday use will apply, but Oh boy you'll feel it from light to light!

I use 4.30's with a 30" tall tire. I run the highway all the time turning 3200 rpm at about 60 mph. But I may try going down to 3.91 as I really dont think it will slow down much if any in the 1/4 mile with all the torque of my 493. Ron