Super stock tires

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I can't remember what size the orignal rear tires were. Most teams used them for trailer tires once they put slicks on.
I will rummage thru my archives and see what I can find.
 
Yeah the stock ones were tiny. And if I remember correctly, when they put the bigger wheels and tires on... the openings were modified... I know on the darts anyway. Cudas too? And did they roll the lip in as well?
 
landys car came with 7.75 15s on his 68 hemi dart. from car craft mag,1968 Dodge Dart Hemi in NHRA - Landy's Dart
Rear suspension:
NHRA Super Stock rules forbade postfactory wheeltub and fender tire clearance modifications well into the early '70s. So all Hemi A-Bodies came with special offset spring shackles and hangers, which gained 3/4-inch of sidewall clearance. You can still buy this kit from MP. At present, the Dick Landy car exhibits minitubs, a narrowed axlehousing, and leaf springs moved in-line with the rear frame longitudinals. We say bring it back to stock. The Dana 60 rear axle packs 4.10:1 gears; originally, equipment cogs were 4.88:1 (4.86:1 in automatic cars equipped with the 83/4 rear axle).

Brakes:
While four-piston Kelsey Hayes disc brakes were a regular factory option on '68 A-Bodies, they had the small 5-on-4-inch bolt pattern. Hemi A-Bodies got specific 11-inch Bendix 5-on-4.5-inch-bolt-pattern discs from the fullsize C-Body parts bin. The rear brakes are 10-inch drums with the big car 5-on-4.5-inch bolt pattern to match the front. The master cylinder mounts to a specific 1-inch offset aluminum block to make room for the Hemi. Clearance is so tight, flexible brake hoses connect the master cylinder to the body so the valve cover can be removed for valve lash adjustment without breaking into the hydraulic brake circuit.

Wheels/Tires:
As delivered to the customer, original Hemi Darts came with an unusual blend of 14- and 15-inch rollers: 14x5.5 black steel wheels with D70-14 tires up front and skinny, 7.75x15 tires mounted on oddball 15x6 rims out back. The rear hoops had a ton of inboard offset and look like-but are not the same as-later Dodge Dakota pickup truck rims. Dick Landy was a Cragar S/S man, and that's what Pat has on the car now. The front tires are vintage Goodyear 6.70-15, just like the originals. The slicks are 30x12-15 Goodyears-way bigger than anything ever used on the car. The surviving automatic Dart is not tubbed-let's make it a pair!

Transmission
 
Does anyone know the center bore diameter of the 5 on 4.5" rims?

It the same as any other large bolt rim. Front rims used on cars at Hurst were same at 68 road runner 14" rims.

Sorry don't have the exact measurement. Might be able to search around for it.
 
Does anyone know what size tires the '68 Super Stock Hemi Darts ran on the rear with the cut-out wheel wells?

Are you talking about what they left Hurst with or the slick sizes used on these cars in 68?
I have some early Chrysler tire tests where they were trying different size tires as well as the Chrysler/Hurst info on building the cars
Mark J
68 Hemi SS Registry
 
Are you talking about what they left Hurst with or the slick sizes used on these cars in 68?
I have some early Chrysler tire tests where they were trying different size tires as well as the Chrysler/Hurst info on building the cars
Mark J
68 Hemi SS Registry
I see where the guys ran 10 '' slicks but I'm trying to find love out what the diameter was and maybe cross
-reference it tO a street tire. Thanks.
 
I have some old Chrysler Tire tests with the mule car and others - in 68 they used either 10.5 or 11" wide x 15 rim slicks - no diameters given only a tire code. In 69 they tested some 12" x 15 and 12" x 16 slicks.
mark J
1968 Hemi S/S Registry
 
I have no information to offer except
325/50-15 BFG DRs on 10s will physically fit in the factory tubs. These are a little over 27 tall and section at about 13.5 on the 10s,IIRC.
With just a bit of inner massaging, I was able to run a slightly lowered ride height. I did however have to slow down for sharp turns. With SS springs, I would have been able to move the wheels over enough for this not to have been a problem.I did not roll the lips.
The 10s are a bit narrow for street driving as I had to run the tire pressures down at 24psi or less, to prevent the centers from burning off. This drives a little funky going into a corner at over 30 mph, as the body-weight shifts and the sidewalls roll under a bit.I got used to it, and eventually actually liked it.
 
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