so im running a 245/60 15 now and she never hooks.. i want to run a 275 at a minimum but i know i will need to do some work to inner body work and something with my fenders. have any of yall done this yourself or can recommend a good way to go about this

 

What year 1st gen are you talking about?

 

instead of going taller why not go wider?? 295,50,15

 

Do you have any traction devices? What about air pressure?

 

its a 69 with traction bars but i think my tires are just really crappy i want to run the torque thrust wheel like a 17 with a 275/50. my big question is if i need to trim how do i go about it.

 

try different wheel offsets?

 

With a 275 you'll need every bit of back spacing you can get! Need to run a straight edge across the face of the rear hub or drum, and measure back to the closest obstruction, then measure out to the edge of the wheelwell opening. That will tell you max width overall, plus front and back spacing. Then take that to your tire/wheel dealer and see what they say.

 

Have you tried with a different wheel offset?

 

I used to own a 1968 Camaro and I was able to fit 275/60's without any mods; I had 8.5" Rallye wheels (aftermarket) with a 4" BS and it fit like a glove.

 

Mini tubed its not that hard to do....dont spend the thousands of dollars to buy the mini tubs just order two rear wheel inner wells for about 200.00 bucks go to TCI web page and they will take you though the steps...easy...
then you will be able to fit mickeys 345