1966 C10 American Racing Torq Thurst II - Help Please - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Afirehawk1 · 03-29-2017, 03:37 PM

Trying to determine the best fit for the truck. I have 2.5" front drop spindles and 4" rear drop springs. I am running a 396 bbc. The rotor bolt circle is 5"x5". i am being told by Western Chassis the best backspacing would be 3.5" to 4".

I am way out of my league on this. I am use to staying stock.

Any experience or help would be appreciated. thanks!

**The Rocknrod** · 03-29-2017, 04:13 PM

Take a moment and watch this video.
https://www.youtube.com/watch?v=pIqR8EQLISc&t=10s
Then you can print off this form:
http://www.thewheelsmith.net/images/...0spec-form.pdf
Watch the video again.

Afirehawk1 · 03-29-2017, 04:19 PM

homework. thanks!!

chevy_mike · 03-29-2017, 05:24 PM

You can't figure your backspacing until you know how wide your wheels are going to be. Very common for these trucks to use a 4.5" backspacing on an 8" wide wheel. 7" would only need 4". 6" would need 3.5". 9" would be 5.5". See how it can make a difference.

And this is just general info. Changes in suspension, brakes, etc. can make these numbers different. Measure, measure, measure.

Afirehawk1 · 03-29-2017, 06:13 PM

Thank you. This is why I'm asking
Don't want to do this twice 👍

chevy_mike · 03-30-2017, 10:42 AM

Quote:

Originally Posted by Afirehawk1

Thank you. This is why I'm asking
Don't want to do this twice 👍

But you didn't answer the question. How wide to you want to run? No one can tell you what back spacing you might need until we know what width wheel you are planning to run. The numbers I posted give you the most common recommended BS to the width of the wheel.

siggyfreud · 03-29-2017, 09:25 PM

My torque thrusts are 8" wide with 4.5" backspacing. Stock rear width.

Afirehawk1 · 03-29-2017, 10:30 PM

Quote:

Originally Posted by siggyfreud

My torque thrusts are 8" wide with 4.5" backspacing. Stock rear width.

Like to see some photos of that. What rim/tire size you running?

siggyfreud · 03-29-2017, 10:50 PM

It's still a work in progress, so I don't have a lot of photos of it, and none with the fenders on unfortunately.

Afirehawk1 · 03-30-2017, 11:54 AM

Quote:

Originally Posted by siggyfreud

It's still a work in progress, so I don't have a lot of photos of it, and none with the fenders on unfortunately.

i definitely like the look on these. thanks for the photos.

**PGSigns** · 03-30-2017, 11:26 AM

Then what diameter. That can be an issue in the front. Then the tires you want to use can have an effect in the rear with running out of room in the back.
Jimmy

Afirehawk1 · 03-30-2017, 11:53 AM

not really sure on the diameter nor width. thinking either 18" or 20"
i may end up borrowing a tire/rim from a buddy to see how it looks.
sorry to say i am visual and this is a tough one.
i do appreciate everyone's help though

lots to consider.

chevy_mike · 03-30-2017, 04:51 PM

These are 17x8 with 4.5" BS. Tires are 235/60-17.

LT1 Burb · 03-31-2017, 11:00 AM

Mine were the same I believe, 17X8 with 4.5 back spacing and 17X7 up front.

Afirehawk1 · 03-31-2017, 03:14 PM

Quote:

Originally Posted by LT1 Burb

Mine were the same I believe, 17X8 with 4.5 back spacing and 17X7 up front.

Nice
What suspension you running

LT1 Burb · 04-02-2017, 10:29 AM

Quote:

Originally Posted by Afirehawk1

Nice
What suspension you running

Airride technologies bags.

AUS64c10 · 04-01-2017, 07:03 PM

I run 18" x 8" in the front and 18" x 9" in the rear on my 64. Rims have 4.5" Backspacing on the front and 5" Backspacing on the rear.

Tires are 255/60R18 in the front and 265/60R18 in the rear. The rears have a tad to much side wall bulge as they rub occasionally on the inner wheel tubs.

Truck has about a 4" drop in the back and a 3.5 drop in the front using CCP drop spindle with 1" lowered belltech spring.

luvbowties · 04-02-2017, 04:00 AM

Quote:

Originally Posted by AUS64c10

I run 18" x 8" in the front and 18" x 9" in the rear on my 64. Rims have 4.5" Backspacing on the front and 5" Backspacing on the rear.

Tires are 255/60R18 in the front and 265/60R18 in the rear. The rears have a tad to much side wall bulge as they rub occasionally on the inner wheel tubs.

Truck has about a 4" drop in the back and a 3.5 drop in the front using CCP drop spindle with 1" lowered belltech spring.

Hey, AUS64c10, very nice and so clean-looking ride. Nothing missing--nothing to take away!
Sam

03-29-2017, 03:37 PM	#1
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	1966 C10 American Racing Torq Thurst II - Help Please Trying to determine the best fit for the truck. I have 2.5" front drop spindles and 4" rear drop springs. I am running a 396 bbc. The rotor bolt circle is 5"x5". i am being told by Western Chassis the best backspacing would be 3.5" to 4". I am way out of my league on this. I am use to staying stock. Any experience or help would be appreciated. thanks!

03-29-2017, 04:13 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 1966 C10 American Racing Torq Thurst II - Help Please Take a moment and watch this video. https://www.youtube.com/watch?v=pIqR8EQLISc&t=10s Then you can print off this form: http://www.thewheelsmith.net/images/...0spec-form.pdf Watch the video again. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-29-2017, 04:19 PM	#3
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: 1966 C10 American Racing Torq Thurst II - Help Please homework. thanks!!

03-29-2017, 05:24 PM	#4
chevy_mike Never Ending Projects Join Date: Jul 2006 Location: San Diego, CA Posts: 3,836	Re: 1966 C10 American Racing Torq Thurst II - Help Please You can't figure your backspacing until you know how wide your wheels are going to be. Very common for these trucks to use a 4.5" backspacing on an 8" wide wheel. 7" would only need 4". 6" would need 3.5". 9" would be 5.5". See how it can make a difference. And this is just general info. Changes in suspension, brakes, etc. can make these numbers different. Measure, measure, measure. __________________ . 1965 C10 Panel, Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often...

03-29-2017, 06:13 PM	#5
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: 1966 C10 American Racing Torq Thurst II - Help Please Thank you. This is why I'm asking Don't want to do this twice 👍

03-29-2017, 09:25 PM	#7
siggyfreud Registered User Join Date: Jun 2012 Location: Portland Posts: 1,330	Re: 1966 C10 American Racing Torq Thurst II - Help Please My torque thrusts are 8" wide with 4.5" backspacing. Stock rear width. __________________ Current Build - Project "Ghost of Poseidon" 72 C10 Pro-touring build Previous Build - 66 GMC Pro-touring build. Sold.

03-29-2017, 10:50 PM	#9
siggyfreud Registered User Join Date: Jun 2012 Location: Portland Posts: 1,330	Re: 1966 C10 American Racing Torq Thurst II - Help Please It's still a work in progress, so I don't have a lot of photos of it, and none with the fenders on unfortunately. __________________ Current Build - Project "Ghost of Poseidon" 72 C10 Pro-touring build Previous Build - 66 GMC Pro-touring build. Sold.

03-30-2017, 11:26 AM	#11
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: 1966 C10 American Racing Torq Thurst II - Help Please Then what diameter. That can be an issue in the front. Then the tires you want to use can have an effect in the rear with running out of room in the back. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

03-30-2017, 11:53 AM	#12
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: 1966 C10 American Racing Torq Thurst II - Help Please not really sure on the diameter nor width. thinking either 18" or 20" i may end up borrowing a tire/rim from a buddy to see how it looks. sorry to say i am visual and this is a tough one. i do appreciate everyone's help though lots to consider.

03-30-2017, 04:51 PM	#13
chevy_mike Never Ending Projects Join Date: Jul 2006 Location: San Diego, CA Posts: 3,836	Re: 1966 C10 American Racing Torq Thurst II - Help Please These are 17x8 with 4.5" BS. Tires are 235/60-17. __________________ . 1965 C10 Panel, Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often...

03-31-2017, 11:00 AM	#14
LT1 Burb Registered User Join Date: Sep 2010 Location: Winchester Oregon, formerly Vancouver BC Posts: 2,949	Re: 1966 C10 American Racing Torq Thurst II - Help Please Mine were the same I believe, 17X8 with 4.5 back spacing and 17X7 up front. Attached Images

04-01-2017, 07:03 PM	#17
AUS64c10 Registered User Join Date: Feb 2013 Location: Melbourne, Australia Posts: 88	Re: 1966 C10 American Racing Torq Thurst II - Help Please I run 18" x 8" in the front and 18" x 9" in the rear on my 64. Rims have 4.5" Backspacing on the front and 5" Backspacing on the rear. Tires are 255/60R18 in the front and 265/60R18 in the rear. The rears have a tad to much side wall bulge as they rub occasionally on the inner wheel tubs. Truck has about a 4" drop in the back and a 3.5 drop in the front using CCP drop spindle with 1" lowered belltech spring. Attached Images



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