[PontiacJim]

So here's a better calculator that shows rpms through the gears, four with the 3.54 and four with the 3.73. Not much of a difference but the 3.73 still looks good and if I don’t use 5th until I'm really cruising 4th is still not over revving things. Sorry if I'm over thinking things but I want to get the best possible gear because I ain't changing it. Sorry they got out of order. View attachment 159775
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3.73's look like a better pick.

 

[Baaad65]

3.73's look like a better pick.

In your opinion why do they look better?

 

[ponchonlefty]

In your opinion why do they look better?

i think it is better to be on the cam with more rpm than it lugging. kinda like when an automatic needs a stall converter to keep the rpms where the cam is happy.

 

[PontiacJim]

In your opinion why do they look better?

I don't like the RPM numbers with the 3.54 at the lower speeds. Several seem to be at a point where the gear is either kinda high on the RPM or a bit too low and lugging. Top end, 70 MPH at 2150 is fine and not much more than the 3.54's. With the 3.54's at 70 MPH, anything lower and going up hills and you will be down shifting more and riding 4th gear at a higher RPM.

Just my opinion. Bottom line is you have to decide. Your engine has a lot of torque, so you can pull the 3.54's at 70 or above. How often do you plan on cruising at 70 MPH and how far? Seems your aim is more towards performance and I think the 3.73's would be the better choice for you. the 3.54's around town might be a little sluggish and I don't think you will see OD very often and defeat the purpose of the OD.

I have the 3.89's figuring most of my driving will be cruising around town and locally. Don't really expect to be running up on the highway very much, but if I do, the OD will help and I can take advantage of it. I want acceleration on the street.

 

[Baaad65]

I don't like the RPM numbers with the 3.54 at the lower speeds. Several seem to be at a point where the gear is either kinda high on the RPM or a bit too low and lugging. Top end, 70 MPH at 2150 is fine and not much more than the 3.54's. With the 3.54's at 70 MPH, anything lower and going up hills and you will be down shifting more and riding 4th gear at a higher RPM.

Just my opinion. Bottom line is you have to decide. Your engine has a lot of torque, so you can pull the 3.54's at 70 or above. How often do you plan on cruising at 70 MPH and how far? Seems your aim is more towards performance and I think the 3.73's would be the better choice for you. the 3.54's around town might be a little sluggish and I don't think you will see OD very often and defeat the purpose of the OD.

I have the 3.89's figuring most of my driving will be cruising around town and locally. Don't really expect to be running up on the highway very much, but if I do, the OD will help and I can take advantage of it. I want acceleration on the street.

That's what I was seeing too, glad I got everyone's opinion as I would have never guessed I would want a 3.73, funny that's what was in my '67 back in the day except my 19 year old dumb ass used a ring spacer to stuff a 3.73 into a 10 bolt...but I never had it fail even with a .30 over 428 and a tri power but then again I didn't have the tires I do now 😉

 

[Baaad65]

So the Strange Dana S60 rear end is ordered, 3.73 cogs and I broke down and ordered the drum brakes....I owe I owe it's off to work I go 😉

 

[ponchonlefty]

So the Strange Dana S60 rear end is ordered, 3.73 cogs and I broke down and ordered the drum brakes....I owe I owe it's off to work I go 😉

its just money right. once the fun starts that smile will make things more bearable.

 

[PontiacJim]

So the Strange Dana S60 rear end is ordered, 3.73 cogs and I broke down and ordered the drum brakes....I owe I owe it's off to work I go 😉

You will think you are a kid again. Wife won't see you from 9PM Friday night 'til 2AM as you will be cruising the "ave" running down rice burners, LS, and hemi cars. Do you have a savings plan for tires or stocks in a rubber company? Lawyer on speed dial? LOL

 

[Baaad65]

If anyone has a special order at Summit be sure and ask for Elain she's in charge and really went out of her way. First she said shipping was free even for the size and weight which I couldn't believe and that's why I was ready to pick it up at Strange, then she said I couldn't use PayPal for the 12 month free financing but I sweet talked into it. Then in the evening I realized I forgot to add gear lube to the order so I left her a voicemail and she calls me back at 9pm, says it's to hard to add it to the order so she orders 4 qts. from Summit at no charge and says Merry Christmas!!! The world needs more Elaine's 👍

 

[Jetzster]

If anyone has a special order at Summit be sure and ask for Elain she's in charge and really went out of her way. First she said shipping was free even for the size and weight which I couldn't believe and that's why I was ready to pick it up at Strange, then she said I couldn't use PayPal for the 12 month free financing but I sweet talked into it. Then in the evening I realized I forgot to add gear lube to the order so I left her a voicemail and she calls me back at 9pm, says it's to hard to add it to the order so she orders 4 qts. from Summit at no charge and says Merry Christmas!!! The world needs more Elaine's 👍

You musta showed her your breathers😉

 

[ponchonlefty]

You musta showed her your breathers😉

what ever works right.

 

[Baaad65]

what ever works right.

Exactly 😉

 

[Baaad65]

.....it was just like Chris Farley convincing the waitress to fire up the deep fryer again for some wings in Tommy Boy I did hate seeing that nice GTX vert destroyed

 

[Jared]

If anyone has a special order at Summit be sure and ask for Elain she's in charge and really went out of her way. First she said shipping was free even for the size and weight which I couldn't believe and that's why I was ready to pick it up at Strange, then she said I couldn't use PayPal for the 12 month free financing but I sweet talked into it. Then in the evening I realized I forgot to add gear lube to the order so I left her a voicemail and she calls me back at 9pm, says it's to hard to add it to the order so she orders 4 qts. from Summit at no charge and says Merry Christmas!!! The world needs more Elaine's 👍

I've always gotten great service from Summit. Been ordering from them for many years.

Congratulations on the new rear. I've tossed around replacing mine but am hesitant. Right now the 1 wheel peal is probably keeping me from breaking a lot of other things.

 

[Baaad65]

I've always gotten great service from Summit. Been ordering from them for many years.

Congratulations on the new rear. I've tossed around replacing mine but am hesitant. Right now the 1 wheel peal is probably keeping me from breaking a lot of other things.

Well I have a 12-bolt for sale complete with brakes and Strange axles, nice cover and upper arms, 1350 yoke, all it needs is a carrier and gears, and it's narrower than yours for some big meats...how about a road trip 😉 seriously though Idk what a good price is to start at for it.

 

[Baaad65]

Well I got the lube now I just need a rear end to use it on 😉

 

[RMTZ67]

Well I got the lube now I just need a rear end to use it on 😉 View attachment 160645

ÒOOOKAY any volunteers?

 

[Baaad65]

Received my 1/2" lug nuts, rear end is supposed to ship February 9th 👍

 

[ponchonlefty]

Received my 1/2" lug nuts, rear end is supposed to ship February 9th 👍 View attachment 161172

won't be long now.

 

[Jared]

First lube, now pictures of your nuts. You have really moved up in the world since the whole breather fiasco.

All joking aside, I am envious of this project. I'd love to bump up the gear ratio in mine a smidge and do away with the one wheel peal it is now, but I have a ton of other irons in the fire right now.