Torq Thrusts On A 74
Thread Starter
Instructor
Joined: Apr 2008
Posts: 173
Likes: 1
From: Stowe Vermont
Torq Thrusts On A 74
I want to put Torq Thrusts on my 74, but dont know what backspacing i need. I was thinking a 17 inch rim but anyone have any advice or pics of cars with them?
Thanks
Thanks
Racer
Joined: Sep 2003
Posts: 258
Likes: 1
From: Memphis TN
Those are prolly 17's but could be 18's. The problem is that the tires are too short and therefore there is too much wheel well showing around them. Whatever tires you use, they need to be as close as possible to 27 inches tall. A 255/50/17 is perfect.
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Race Director
Joined: Jan 2007
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From: NYC NY
A couple of things you may want to give some thought to. Do you want to run the same size on all 4 corners or do you want a staggered fit (wider in the rear)? As stated above if you want the same on all 4 corners 17x8 with 4" backspace. A 255/50 tire is the same height as the stock tire. There have been a lot stories lately about American Racing building their wheels "off shore" and due to this there have been long delays with "custom" backspace as well as quality issues. With that in mind you may want to consider Vintage Wheel Works. http://www.vintagewheelworks.com/products/wheels They are a bit more money but as they say quality wise "you get what you pay for". Go luck with what ever you choose to do.
Thread Starter
Instructor
Joined: Apr 2008
Posts: 173
Likes: 1
From: Stowe Vermont
A couple of things you may want to give some thought to. Do you want to run the same size on all 4 corners or do you want a staggered fit (wider in the rear)? As stated above if you want the same on all 4 corners 17x8 with 4" backspace. A 255/50 tire is the same height as the stock tire. There have been a lot stories lately about American Racing building their wheels "off shore" and due to this there have been long delays with "custom" backspace as well as quality issues. With that in mind you may want to consider Vintage Wheel Works. http://www.vintagewheelworks.com/products/wheels They are a bit more money but as they say quality wise "you get what you pay for". Go luck with what ever you choose to do.
Last edited by C3HOONIGAN; Feb 27, 2009 at 09:01 PM.
Racer
Joined: Sep 2003
Posts: 258
Likes: 1
From: Memphis TN
No, 255/50/17, not 255/70/17. I have custom grey center 15x8 Torq Thrust II's with 4" backspacing (-13 mm offset) and 255/60/15 BFG's all around on my 74 and the tires were VERY close to the e-brake cables on the rear trailing arms before I relocated them. For this reason, I would NOT go with MORE than 4" backspacing. Put the extra width on the outside of the rim if you go wider than 8".
Race Director
Joined: Jan 2007
Posts: 14,948
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From: NYC NY
Here this will get you started http://forums.corvetteforum.com/c3-t...-required.htmlAs you will soon realize all these cars are a little different. Some cars get 5.5" backspace to work with NO MODS others don't.
This is a chance you take if you decide to go with 18x10s or even 18x9.5 in the rear. 
Burning Brakes
Joined: Sep 2008
Posts: 753
Likes: 0
I still don't understand totally the matter of the backspacing.
do this rim clear the brake caliper or not?
http://www.vintagewheelworks.com/pro...heels/v45/15x8
thanks
do this rim clear the brake caliper or not?
http://www.vintagewheelworks.com/pro...heels/v45/15x8
thanks
Drifting
Joined: Jul 2005
Posts: 1,562
Likes: 2
From: Spring Texas
I still don't understand totally the matter of the backspacing.
do this rim clear the brake caliper or not?
http://www.vintagewheelworks.com/pro...heels/v45/15x8
thanks
do this rim clear the brake caliper or not?
http://www.vintagewheelworks.com/pro...heels/v45/15x8
thanks
Crackin' on...
Joined: Jun 2003
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From: Somewhere in Tucson AZ
St. Jude Donor '09
Race Director
Joined: Dec 1999
Posts: 19,610
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From: Forked River NJ
17X8 4 inch backspace front with 255 45 17.
18X10 5.5 inch backspace rear with 275 40 18s
Stock trailing arms, ebrake cable relocated, no sway bar and rear spring shortened 1/2 inch both sides
.jpg)
18X10 5.5 inch backspace rear with 275 40 18s
Stock trailing arms, ebrake cable relocated, no sway bar and rear spring shortened 1/2 inch both sides
Melting Slicks
Joined: Jan 2001
Posts: 2,016
Likes: 31
From: Little Egg Harbor N.J.
Would love to see a view from the rear to get an idea of how massive the tires look and how well they fit. I've seen your car a few times at Kerbeck's Toys For Tots runs but, never noticed the width of the tires.
.jpg)
