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#1
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1970 Grand Prix Tire Sizes..
1970 Grand Prix Tire Sizes;
I'm restoring a 1970 SJ 455 Ho / 4-Speed LOADED, NO A/C, Silver/Black Leather I have 4, 7" X 15" Rally II wheels. What size tire combos do you recommend? I Like to get a bigger tire on the rear. What's the biggest tire I can put on the rear without rubbing? Any comments or advice is much appreciated, I posted this before but can't find my thread. Thank you in advance..: BIG BLOCK JAMO (818) 209-6590 paulbjamieson@hotmail.com 63 Catalina 421, Tri-Power, 4-Speed, w/ Console, Ventura Interior, 8 Bolts (Disc), Tach, Tilt, Deluxe Wheel, Power / Windows, Steering, Brakes 64 GTO 455, Tri-Power, 5-Speed, w/Console, 12 Bolt 3:42, 4 Wheel Disc, Tach, Tilt, 4 Spoke Wheel 66 2+2 Convertible 421, Tri Power, 4-Speed w/Console, 8 Bolt (Disc), P/Top,Windows, Steering, Brakes AM/FM, Last edited by BIG BLOCK JAMO; 01-11-2024 at 05:22 AM. |
#2
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Paul,
I am running 255 60 15's rear and 245 60 15's on front. I do not have any rubbing while turning steering wheel lock to lock. I would think there are many other configurations that work but wanted to give you some feedback. Larry
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I Bleed Arrowhead Red, 64 GTO 389 Tri Power 4spd Nocturne Blue Poly 70 GTO 400 4spd Palladium Silver 70 GP 400/4 spd triple Black 71 T/A 455 4spd Cameo White 01 T/A Bright Red 4L60E Ram Air WS6 02 TA Navy Blue Metalic 6 spd Ram Air WS6 |
#3
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im running 275s on the back but im running 8 inch rims .I agree with post above 255/245
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BOB SLUSSER 937-286-4343 |
#4
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275/60-15 fits with ease and that is a 28" tall tire. A 295/50-15 ran close for me but okay. I have seen a '70 GTO with 305's, but do not know if a GP can get there.
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'70 GP Model J 462 Butler ported 87cc Edelbrock D-ports RPM intake with Holley Sniper 2 CompCams 236/242 hydraulic roller Tribal Tubes tri-y headers TH400 13" Continental "Jim Hand Special" 3.50 9" CurrieTrac, 245/45-18 Front, 275/40-18 Rear |
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