What do you guys think of a 29x9.5 slick behind my car?

A little taller than I planned, but might take a little shock out of a leaf spring car, and the 9.5 should fit nice underneath

I have a good deal on a pair.

My first gear ratio is 2.87 with a 3.70 rear and 1st is short, but not horrible with 27.5 tall street tires


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- 70 Fastback Mustang, 489 cid FE, TKO-600 5 speed, 3.70 9 inch
- 71 F100 shortbed 4x4, 397 cid FE, headers, Street Dominator, 280H, 5 lug Dana 60, 4 speed

M/T 3056 on an 8 to 10 wheel.

as that tire is actually near 30" tall. I run the stiff sidewall version(3056st) on the wagon on a 10" rim.



Might kinda kill off your low gear with it being 3.70 rear? You might be better off with a shorter tire? With my 4.56 gear, running low 11's, run thru at about 6200 rpm.





LarryK

1964 Galaxie 2dr 390/6-71/4spd

1964 Country Sedan Wagon 428/5spd

1969 F100 428/4spd

1967 F100 352/now a 4 spd!

1959 B Model Mack

Sure wouldn't fit on my Mach 1, at least not without trimming the leading edge of the wheelwell a little. Biggest I could get under my car was a 28" tall 10" wide Hoosier.

Jay Brown
1968 Shelby GT 500 Convertible, 492" 667 HP FE
1969 R code Mach 1, 490" supercharged FE, 9.35 @ 151.20, 2007 Drag Week Runner Up, Power Adder Big Block
2005 Ford GT, 2006 Drag Week Winner, 12.0 Daily Driver
1969 Ford Galaxie XL, 460 (Ho Hum....)
1964 Ford Galaxie 500, 510" SOHC

www.network54.com/Realm/JaysPictures/jaktsm.JPG www.network54.com/Realm/JaysPictures/smplaq.JPG" alt="[linked image]">

I raced a 70 428 CJ Mustang I and the biggest tire that I could fit in was a 28 X 10 Goodyear on Weld Pro Stars that were 8 wide with a 4 1/2 inch back spacing. I think 28 is going to be as tall as you can run. My suggestion is a 28 X 9.

Dave Walters
427 Galaxie Registry
Website
http://home.ptd.net/~pwalters

n/m


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- 70 Fastback Mustang, 489 cid FE, TKO-600 5 speed, 3.70 9 inch
- 71 F100 shortbed 4x4, 397 cid FE, headers, Street Dominator, 280H, 5 lug Dana 60, 4 speed

I figured width was a bigger issue than height, I run a 275/60-15 now at roughly 28 inches. I'll see how they line up to the street tires

I am not "slick-smart" as a diesel truck mechanic most of my pre-college life, we didnt have too many requests for slicks LOL

Sounds to me though that these arent the right ones for my car, thanks for the info



---------------------------------

- 70 Fastback Mustang, 489 cid FE, TKO-600 5 speed, 3.70 9 inch

- 71 F100 shortbed 4x4, 397 cid FE, headers, Street Dominator, 280H, 5 lug Dana 60, 4 speed

mounted on a set of 10" Centerlines right now(old set of race car). I can give you real time measurements if you need them. Heck, if you were anywhere close, you could try them out.

My friend ran a '70 and ran a 28x10W on it. We both agreed the 29.5 would be wayy too tall.

LarryK

1964 Galaxie 2dr 390/6-71/4spd
1964 Country Sedan Wagon 428/5spd
1969 F100 428/4spd
1967 F100 352/now a 4 spd!
1959 B Model Mack

DC area here.


---------------------------------
- 70 Fastback Mustang, 489 cid FE, TKO-600 5 speed, 3.70 9 inch
- 71 F100 shortbed 4x4, 397 cid FE, headers, Street Dominator, 280H, 5 lug Dana 60, 4 speed

LarryK

1964 Galaxie 2dr 390/6-71/4spd
1964 Country Sedan Wagon 428/5spd
1969 F100 428/4spd
1967 F100 352/now a 4 spd!
1959 B Model Mack

I am in the DC area, so a trial fit wont work. I truly appreciate the offer though


---------------------------------
- 70 Fastback Mustang, 489 cid FE, TKO-600 5 speed, 3.70 9 inch
- 71 F100 shortbed 4x4, 397 cid FE, headers, Street Dominator, 280H, 5 lug Dana 60, 4 speed

so let me know and I'll get a couple pics and the tape measure out.


LarryK

1964 Galaxie 2dr 390/6-71/4spd
1964 Country Sedan Wagon 428/5spd
1969 F100 428/4spd
1967 F100 352/now a 4 spd!
1959 B Model Mack

The Hoosier 28x10 and the MT 28x10.5 spec out at the exact same size.

Hoosier
https://www.hoosiertire.com/specdrag.htm


Mickey Thompson
http://mickeythompsontires.com/strip.php?item=ETDrag

The STIFF sidewall tire is the newest, hottest thing out there for stickshift cars. It is available from MT in the 26x10 and 28x10.5 size. Hoosier offers it in the 28x10.5 They don't wad up the sidewall and bounce the rim off the ground like standard slicks do when hit with a big shockload. You may want to look into them.

I can't fit the 28x10.5 on my car, but am considering trying the 26x10 stiff sidewall.

Of course, pretty much ANY slick you can fit under the car will work just fine to go try your car out on the strip. Just put something on back there, and give er' hell! Have fun and go from there! Don't think too hard and over-analyze things before you go. If you do, you might never get there.

Good Luck!

------------------------

Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

as I did ONCE. I went from a GY 28x10 to Hoosier 28x10 as it "Said" it was the exact same. WRONG!!! So wrong that it wasn't even close to fitting, period.

Until you actually mount and compare those charts are not accurate.


LarryK

1964 Galaxie 2dr 390/6-71/4spd
1964 Country Sedan Wagon 428/5spd
1969 F100 428/4spd
1967 F100 352/now a 4 spd!
1959 B Model Mack

and the MT's tend to run small. Don't know about the GY's. The chart's are good 'starting' points, though.

------------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

We put 30x10.5 Goodyear slick on my bosses 69 Mustang. With a 15x10 rim and we had 4.5 and 5.5 backspacing.







http://www.fquick.com/garages/viewvehicle.php?id=8822 Streetcar 90 Coupe. Stock 69 351W C6 trans 8.8 rear with 3.73, Strange 31 spline axles and spool

http://www.fquick.com/garages/viewvehicle.php?id=8820 Racecar 68 Falcon. Full Cage and FE 487ci PowerGlide trans. 9'rear with 4.56 with 33 spline axles and spool

the housing moved back around an inch or so. I had a friend who tried to install big street tires on a 1969 mustang, and gained quite a bit if room by moving the housing back a little. Tires were centered in the wheelwell MUCH better after moving the housing back.

------------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

looks to me that the car had the rear centered in the wheel opening. There was no way a 30 would have fit the 70 Mustang I was racing. That car had the totally stock rear suspension.

Dave Walters
427 Galaxie Registry
Website
http://home.ptd.net/~pwalters

Nope it's in the stock location. Now I'm not sure if the quarter panal was cut or anything but I don't think it was. It is a tight fit and was rubbing in a few place but made the adjustment and they fit good now.



http://www.fquick.com/garages/viewvehicle.php?id=8822 Streetcar 90 Coupe. Stock 69 351W C6 trans 8.8 rear with 3.73, Strange 31 spline axles and spool


http://www.fquick.com/garages/viewvehicle.php?id=8820 Racecar 68 Falcon. Full Cage and FE 487ci PowerGlide trans. 9'rear with 4.56 with 33 spline axles and spool

I guarantee that something has been done to that 69`s 1/4 panels to make those slicks fit. A 30" tall slick would be hitting the factory wheel openings badly just sitting still, let alone with high speed tire growth. I`ve had slicks on several of my 69 & 70 Mustangs, 28 1/2" was the tallest I felt comfortable with.

428 powered Fairmont drag car, Best ET:10.03@132.11MPH, best 60 ft: 1.29
59 Meteor 2 dr. sedan 332, Ford O Matic
74 F350 ramp truck 390 4speed

That area between the quarter and door looks a bit short to my eye.
A 30" tire will definately NOT fit there in factory trim. Been there.

Doug
----------------------

69 Mach 1 R-code - 427MR 4-spd
68 F-250 4wd - 390HP 4-spd
58 2dr Del Rio Wagon - 390 4-spd
63 Mercury Comet 4dr 170ci 3-spd. (24mpg)
65 Galaxie 500 2dr hrdtp - 390 (automatic )

Even if it fits when sitting still, a bias ply slick will grow at speed. If it's a radial it shouldn't grow.

A 28.5 tire was the tallest that would work on my 69. I tried a 29 which fit while the car was parked but it rubbed the front of the wheel opening when the tire grew.

Like N20 Mike said the rearend could be moved back a bit.

I dont want to make any changes to the car, its just so I can say I ran it down the strip like the big boys

Its still a Sunday long haul cruiser, I just want to see what it'll do and know there is no way it'll get there with street tires


---------------------------------
- 70 Fastback Mustang, 489 cid FE, TKO-600 5 speed, 3.70 9 inch
- 71 F100 shortbed 4x4, 397 cid FE, headers, Street Dominator, 280H, 5 lug Dana 60, 4 speed

I agree that a 28" slick is about as tall as a stock 69-70 Mustang will hold comfortably, as Jay mentioned, the front of the wheel opening is the closest point. A 9x28" M/T slick shoulfd fit fine, although they actually measure a bit less than 27 1/2" tall. Frankly, with 3.70 gears, I`d be tempted to try the 26" tall M/T`s, I make plenty of 11 second passes on the 8 1/2" x26-15 M/T`s I used to run on my 69 Mach 1. If you think they are too small, they also make a 10x26" slick.

428 powered Fairmont drag car, Best ET:10.03@132.11MPH, best 60 ft: 1.29
59 Meteor 2 dr. sedan 332, Ford O Matic
74 F350 ramp truck 390 4speed

I guess mustangs have less room. On my 69 Cougar I can fit 30x10.5 Hoosier Drag Radial Slick, on a 15x10 inch wheel with 5.5 inches of BS.......Tim

i run a 28x11.5 quick time pro on my 69 scj mustang, fits well and hooks up great.

are rated by their SIDEWALL width, not their tread width. Those most likely have a 9" or 10" tread.

------------------------

Mike Burch

66 mustang real street

302 4-speed 289 heads

10.63 @ 129.3

http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

m

************************************

1967 FE 390GT engine: 416 CID 233/238* @ 0.050 Solid Lifter w/ 4 spd TL.
1968 GT/CS Mustang. 289/c4
1995 Mercedes e320 I6 DOHC, 216 HP wagon.
2003 Tundra SR5, 4.7 DOHC, 4x4.
Another Galaxie (one day.)

Oh and a Bicycle - daily driver to save gas for the 'F'un 'E'xcursions.

All of those guys fold in the lower frt and rear of the rear whl wells for clearance. I would think your car should pull well w/28x11's. 489" may overwhelm 26's w/your 1st gear.
Ron.