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Wade Mahaffey · 08-18-2011, 10:12 PM

If your gonna move it enough for a 10-10.5 inch tire, you will be into the frame section. If you move it one inch or three inches, it still requires the same amount of work. Also the same areas and components to be modified plus a half of a tub. ONLY ALLOWED IN CRATE MOTOR STOCK. I believe the intent is to allow you to put a 10-10.5 tire under the car properly and safely. And to do that you should have 13-14 inches of clean tire area. A Duster has about 14 inches give or take, from the quarter panel (wheel opening lip) to the frame flange (spot welded to the floor) and you will need it all to do it properly. Then you will need about a 2 inch extension to the wheel tub. The rule book says minor inward movement (how much is that) to me it's the minimum it takes needed for a 10 inch tire to have the safe tire/body clearence and no more. They said you could move it, and they said you could use a 10 inch tire. Do what you need to make that happen and no more. Having said all of that, the best way to do this is send photos to IHRA TECH DEPT. (Hank or Mike) of what you want to do and why...present your case, and you will be fine.

Wade Mahaffey

08-18-2011, 10:12 PM	#7
Wade Mahaffey Senior Member Join Date: Apr 2007 Posts: 581 Likes: 0 Liked 17 Times in 7 Posts	Re: Moving springs inboard ihra stock If your gonna move it enough for a 10-10.5 inch tire, you will be into the frame section. If you move it one inch or three inches, it still requires the same amount of work. Also the same areas and components to be modified plus a half of a tub. ONLY ALLOWED IN CRATE MOTOR STOCK. I believe the intent is to allow you to put a 10-10.5 tire under the car properly and safely. And to do that you should have 13-14 inches of clean tire area. A Duster has about 14 inches give or take, from the quarter panel (wheel opening lip) to the frame flange (spot welded to the floor) and you will need it all to do it properly. Then you will need about a 2 inch extension to the wheel tub. The rule book says minor inward movement (how much is that) to me it's the minimum it takes needed for a 10 inch tire to have the safe tire/body clearence and no more. They said you could move it, and they said you could use a 10 inch tire. Do what you need to make that happen and no more. Having said all of that, the best way to do this is send photos to IHRA TECH DEPT. (Hank or Mike) of what you want to do and why...present your case, and you will be fine. Wade Mahaffey Last edited by Wade Mahaffey; 08-18-2011 at 10:16 PM.