Slant Six Forum :: '65 Valiant cornering

Quote:

13 x 4.5"

Thanks. Where in the world do you get stuff like that??

I think I need to either increase my tire diameter or get overdrive, considering where gas prices are going

Quote:

13 x 4.5"

Thanks. Where in the world do you get stuff like that??

Old magazine articles, here, various forums, stamped on the wheel............

Incidently, there are 14x4.5" small bolt pattern wheels, so make sure they're 14x5.5"

Quote:

I think I need to either increase my tire diameter or get overdrive, considering where gas prices are going

Be careful with going taller. Taller tires give do change the effective gear ratio, but there are compromises. Some designs (say, significantly wider tires) have higher rolling resistance.
A tire and rim combination that is heavier or has a higher polar moment will take more oomph to accelerate or decelerate. At a steady speed, this may not mean much, but in the real world of daily driving, it adds up.

The best handling I ever got with the stock 13x4.5" wheels on my Valiants was with 175/70-13 tires. Anything wider on that skinny rim will just bulge the sidewall out and make the handling mushy. You are somewhat limited as to performance tires these days in that size but it will make you car steer pretty well as anything on the market now is superior to what we had 30 years ago.

Again considering gas prices, it might be as cheap to put in an overdrive (assuming it's possible to find one) as to find and buy 5 rims. Thanks

Quote:

What you describe sounds more like understeer than oversteer.

I've never seemed to get that right. Every time I think I have it, I have it wrong.

Larger tires may hurt.......

There's the previously mentioned higher weight....

But with the lower gearing you may end up putting the carb into the power (rich) circuit when accelerating and burn up more fuel............

Quote:

Again considering gas prices, it might be as cheap to put in an overdrive (assuming it's possible to find one) as to find and buy 5 rims. Thanks

The only factory overdrive paired with a slant six was a '70s era version of the A-833. If you don't have a factory 4-speed, you will need to modify your transmission tunnel to install one.

The tunnels on the later A-bodies were larger?

Quote:

What you describe sounds more like understeer than oversteer.

I've never seemed to get that right. Every time I think I have it, I have it wrong.

It's easy: Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car.

Author:	emsvitil [ Wed May 03, 2006 9:27 pm ]
Post subject:
13 x 4.5"

Author:	RossKinder [ Wed May 03, 2006 10:12 pm ]
Post subject:
Quote: 13 x 4.5" Thanks. Where in the world do you get stuff like that??

Author:	emsvitil [ Thu May 04, 2006 12:10 am ]
Post subject:
Quote: Quote: 13 x 4.5" Thanks. Where in the world do you get stuff like that?? Old magazine articles, here, various forums, stamped on the wheel............ Incidently, there are 14x4.5" small bolt pattern wheels, so make sure they're 14x5.5"

Author:	slantvaliant [ Thu May 04, 2006 6:15 am ]
Post subject:
Quote: I think I need to either increase my tire diameter or get overdrive, considering where gas prices are going Be careful with going taller. Taller tires give do change the effective gear ratio, but there are compromises. Some designs (say, significantly wider tires) have higher rolling resistance. A tire and rim combination that is heavier or has a higher polar moment will take more oomph to accelerate or decelerate. At a steady speed, this may not mean much, but in the real world of daily driving, it adds up.

Author:	RossKinder [ Thu May 04, 2006 7:13 am ]
Post subject:
Quote: Quote: Quote: 13 x 4.5" Thanks. Where in the world do you get stuff like that?? Old magazine articles, here, various forums, stamped on the wheel............ Incidently, there are 14x4.5" small bolt pattern wheels, so make sure they're 14x5.5" Gee whiz! Thanks

Slant Six Forum https://slantsix.org/forum/

'65 Valiant cornering https://slantsix.org/forum/viewtopic.php?t=17386	Page 2 of 3

Author:	RossKinder [ Thu May 04, 2006 7:18 am ]
Post subject:
Quote: Quote: I think I need to either increase my tire diameter or get overdrive, considering where gas prices are going Be careful with going taller. Taller tires give do change the effective gear ratio, but there are compromises. Some designs (say, significantly wider tires) have higher rolling resistance. A tire and rim combination that is heavier or has a higher polar moment will take more oomph to accelerate or decelerate. At a steady speed, this may not mean much, but in the real world of daily driving, it adds up. It's looking suspiciously like this forum is a gold mine. Thanks.

Author:	GuyLR [ Thu May 04, 2006 11:24 am ]
Post subject:
The best handling I ever got with the stock 13x4.5" wheels on my Valiants was with 175/70-13 tires. Anything wider on that skinny rim will just bulge the sidewall out and make the handling mushy. You are somewhat limited as to performance tires these days in that size but it will make you car steer pretty well as anything on the market now is superior to what we had 30 years ago.

Author:	RossKinder [ Thu May 04, 2006 2:34 pm ]
Post subject:
Quote: The best handling I ever got with the stock 13x4.5" wheels on my Valiants was with 175/70-13 tires. Anything wider on that skinny rim will just bulge the sidewall out and make the handling mushy. You are somewhat limited as to performance tires these days in that size but it will make you car steer pretty well as anything on the market now is superior to what we had 30 years ago. Again considering gas prices, it might be as cheap to put in an overdrive (assuming it's possible to find one) as to find and buy 5 rims. Thanks

Author:	emsvitil [ Thu May 04, 2006 2:46 pm ]
Post subject:
Larger tires may hurt....... There's the previously mentioned higher weight.... But with the lower gearing you may end up putting the carb into the power (rich) circuit when accelerating and burn up more fuel............

Author:	Matt Cramer [ Fri May 05, 2006 4:27 am ]
Post subject:
Quote: Again considering gas prices, it might be as cheap to put in an overdrive (assuming it's possible to find one) as to find and buy 5 rims. Thanks The only factory overdrive paired with a slant six was a '70s era version of the A-833. If you don't have a factory 4-speed, you will need to modify your transmission tunnel to install one.

Author:	SlantSixDan [ Fri May 05, 2006 7:36 am ]
Post subject:
Quote: Quote: What you describe sounds more like understeer than oversteer. I've never seemed to get that right. Every time I think I have it, I have it wrong. It's easy: Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car.

Author:	RossKinder [ Fri May 05, 2006 9:09 am ]
Post subject:
Quote: Larger tires may hurt....... There's the previously mentioned higher weight.... But with the lower gearing you may end up putting the carb into the power (rich) circuit when accelerating and burn up more fuel............ Hmm, I have no urban driving and I may have more interstate driving coming up. I guess to be certain I should perhaps double check the rear end ratio? Do you happen to know the bottom ratio on my 3 speed? Thanks.

Author:	RossKinder [ Fri May 05, 2006 9:15 am ]
Post subject:
Quote: Quote: Again considering gas prices, it might be as cheap to put in an overdrive (assuming it's possible to find one) as to find and buy 5 rims. Thanks The only factory overdrive paired with a slant six was a '70s era version of the A-833. If you don't have a factory 4-speed, you will need to modify your transmission tunnel to install one. The tunnels on the later A-bodies were larger? Giving room for either? Hmmm. I have one word for that. GACK!! Thanks for the heads up.

Author:	SlantSixDan [ Fri May 05, 2006 9:25 am ]
Post subject:
Quote: The tunnels on the later A-bodies were larger? Naw, the difference in the tunnel is floor shift vs. column shift. You have to add the floor shift "hump" if you're going from an automatic or a 3-on-the-tree to a 4-speed, because the 4-speeds are all floor-shifted. This isn't all that tough since there exist brand new shifter hump panels. They're intended for later cars, but can very easily be adapted to the earlier cars.

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Author:	RossKinder [ Fri May 05, 2006 9:27 am ]
Post subject:
Quote: Quote: Quote: What you describe sounds more like understeer than oversteer. I've never seemed to get that right. Every time I think I have it, I have it wrong. It's easy: Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car. Then I had it right. The radials seem to pull me into a sharper and sharper turn quicker compared to bias. With the bias plies it tended to stay on radius easier. Mind you, I'm not talking race conditions. Just hills and curves. Thanks.