How much power you putting to the ground with stock 67-72 dart wheel tubs

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duster360

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My car is a 67 Dart. Curious as to how much power a set of M/T drag radial street tires that will fit in a stock 67 dart wheel tub with a 1/2” leaf spring offset kit can handle. What size tire is being used?
 
My 68 GTS had 9.5 wide tires with offset rims, but I had room to spare toward the leaf springs. I don't see why you can't fit a 10" wide tire within the confines of the dart wheel opening.
 
At the moment I have 245/60 tires. I have seen where some have used 255/60 up to 275/60 street tires. I currently have 411 hp. I am about to offset the springs hangers 1/2” and narrow the rearend 1” or so on each side. Thinking about using a street style drag radial. Is anyone putting 500 flywheel hp to a set of M/T ET drag radials. What size? What issues?
 
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Not a whole lot. The dart wheel wells are the worst for tire clearance. I had to roll the lip just to get 235's on mine and its still close.
 
This video from over here in Australia might interest you! VE Valiant (our Dart) on 235 Drag Radials
 
255-60's on mine but on 15x7 4.25 backspace wheels. I couldn't get a 15x8 to fit without moving the springs or rolling the quarter lip. You can put quite a bit of power down with the right tire and suspension package.

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Reminder : 67-69 Dart/Barracudas with 440's in NHRA Stock eliminator and 1970-1972 Dart/Dusters in Stock Eliminator are using 9" tires WITHOUT tubs and are in the 10's . Tire technology today is light years ahead of what it was even 10 years ago . Try 'em .
 
Some good point here. I think I will just do a 1/2" offset on the leaf springs, Fit what I can in there and let it go. Thanks for the responses.
 
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