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Old 02-02-2020, 10:06 AM   #1
Andyking1203
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Suspension pros and cons...

I'm the proud new owner of a 1970 c10 longbed (gonna keep this for the time being) 2wd. The idea is to make a decent driver outta it with maybe a little bracket racing. It currently has a 6cyl 3 spd in it, that'll change to either a healthy small block or a 6.0 ls swap. My questions are. 1, nolimit 4 link or replace all the stock parts with tubular arms and lowering springs. 2 replace the front suspension with tubular a arms and lowering spindles. Thanks in advance
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Old 02-03-2020, 11:21 AM   #2
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Re: Suspension pros and cons...

Quote:
Originally Posted by Andyking1203 View Post
I'm the proud new owner of a 1970 c10 longbed (gonna keep this for the time being) 2wd. The idea is to make a decent driver outta it with maybe a little bracket racing. It currently has a 6cyl 3 spd in it, that'll change to either a healthy small block or a 6.0 ls swap. My questions are. 1, nolimit 4 link or replace all the stock parts with tubular arms and lowering springs. 2 replace the front suspension with tubular a arms and lowering spindles. Thanks in advance
What is your budget for each 'end' of the truck?
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Old 02-03-2020, 05:22 PM   #3
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Re: Suspension pros and cons...

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What is your budget for each 'end' of the truck?
Budget isnt really a problem, gonna be a slow process reguardless.. obviously want bang for my buck!!!
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Old 02-03-2020, 05:55 PM   #4
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Re: Suspension pros and cons...

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Budget isnt really a problem, gonna be a slow process reguardless.. obviously want bang for my buck!!!
There's nothing wrong w/original truck arms in the rear. If the truck has coils @ all 4 corners some simple parts can offer good ride quality & traction. If you desire change, No Limits 4-bar set-up is a great choice since it was mentioned.

If you're sticking w/the original front crossmember, Ridetech has a nice coil-over kit & Hotchkis makes a nice set-up designed to improve handling. If you're changing/ditching the crossmember up front for extreme changes, No Limit, Porterbuilt, Scotts, GSI, Choppin Block, Roadster Shop all offer updated parts that will work.
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Building a small, high rpm engine
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Cubic inches is like Indiana Jones with a cheap pistol....
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Old 02-03-2020, 06:07 PM   #5
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Re: Suspension pros and cons...

The torque arm rear flat out HOOKS!!

https://totalcostinvolved.com/produc...evy-c10-truck/
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Old 02-03-2020, 06:12 PM   #6
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Re: Suspension pros and cons...

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Originally Posted by SCOTI View Post
There's nothing wrong w/original truck arms in the rear. If the truck has coils @ all 4 corners some simple parts can offer good ride quality & traction. If you desire change, No Limits 4-bar set-up is a great choice since it was mentioned.

If you're sticking w/the original front crossmember, Ridetech has a nice coil-over kit & Hotchkis makes a nice set-up designed to improve handling. If you're changing/ditching the crossmember up front for extreme changes, No Limit, Porterbuilt, Scotts, GSI, Choppin Block, Roadster Shop all offer updated parts that will work.
The front suspension will remain pretty much stock geometry, lower spindles, tubular a arms.. pretty much it. As for the cross member it can stay or go, obviously depending on the route I choose.. ivdont wanna c notch the Frame so itll be slightly lowered. I guess I'm looking for ride quality vs $$$
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Old 02-23-2020, 09:15 AM   #7
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Re: Suspension pros and cons...

I'm curious, can anyone give me a specific idea of the rear gear ratio on a 1970, 6cyl 3spd manual base model truck.. thanks
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Old 02-23-2020, 05:23 PM   #8
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Re: Suspension pros and cons...

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I'm curious, can anyone give me a specific idea of the rear gear ratio on a 1970, 6cyl 3spd manual base model truck.. thanks
Prob 3.73 's.
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Cubic inches is like Indiana Jones with a cheap pistol....
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Old 02-24-2020, 09:23 AM   #9
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Re: Suspension pros and cons...

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Originally Posted by Andyking1203 View Post
I'm curious, can anyone give me a specific idea of the rear gear ratio on a 1970, 6cyl 3spd manual base model truck.. thanks
Quote:
Originally Posted by SCOTI View Post
Prob 3.73 's.
Mine was originally a 250/3ott and had 3.73. Some trucks may have had 4.10, but like SCOTI said, 3.73 was more common. The only other option was 3.07, but that was mainly in the automatic trucks.
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Old 02-27-2020, 07:41 PM   #10
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Re: Suspension pros and cons...

Thst would be great if it has 3.73 gears, truck is getting a 6.0 with a 4l80... decent combo?
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Old 02-28-2020, 10:10 AM   #11
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Re: Suspension pros and cons...

Tire sizes play a roll but 3.73's/.75OD gearing is a common OE set-up. It will work well.
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Building a small, high rpm engine
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like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
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Old 02-29-2020, 07:08 AM   #12
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Re: Suspension pros and cons...

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Tire sizes play a roll but 3.73's/.75OD gearing is a common OE set-up. It will work well.
As for tire/rim size. The only definite thing is, itll have 15" rally's on it. (They are free)!! Plus itll look "stockish". Also will be a fairly wide rear tire.
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Old 02-29-2020, 08:52 AM   #13
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Re: Suspension pros and cons...

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As for tire/rim size. The only definite thing is, itll have 15" rally's on it. (They are free)!! Plus itll look "stockish". Also will be a fairly wide rear tire.
I was referring to actual tire size (OD) for calculations (engine cruise RPM's).15's thru 22's are only relevant to calculating the sidewall height for a given size which helps get a better idea on ride quality.
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Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
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Old 02-29-2020, 08:50 PM   #14
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Re: Suspension pros and cons...

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I was referring to actual tire size (OD) for calculations (engine cruise RPM's).15's thru 22's are only relevant to calculating the sidewall height for a given size which helps get a better idea on ride quality.
Not gonna put low profiles on it, I still want a decent wheel well filling tire.. not exactly sure yet..
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Old 03-27-2020, 07:28 AM   #15
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Re: Suspension pros and cons...

So with a little research, I found out the truck is a 69, not a 70.. dont really think that matters.

For the time being, can I put a 71/71 ball joint in a 69 a arm? Also will the 71/72 tie rod work with the 69 drag link? Spindles will be for a 71/72.

Also thinking of lowering the truck with the 4" coils from lmc, do I need to replace the pan hard bar, or will stock be ok?
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Old 03-27-2020, 10:32 AM   #16
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Re: Suspension pros and cons...

Quote:
Originally Posted by Andyking1203 View Post
So with a little research, I found out the truck is a 69, not a 70.. dont really think that matters.

For the time being, can I put a 71/71 ball joint in a 69 a arm? Also will the 71/72 tie rod work with the 69 drag link? Spindles will be for a 71/72.

Also thinking of lowering the truck with the 4" coils from lmc, do I need to replace the pan hard bar, or will stock be ok?
I found out the truck is a 69, not a 70.. dont really think that matters. No, it doesn't. The differences come into play in 71 (disc brakes changed things).

Can I put a 71/71 ball joint in a 69 a arm? Yes.

Will the 71/72 tie rod work with the 69 drag link? You need 71/72 outer tie rod ends for sure. You might need adapter sleeves if the inner/outer thread sizes are different or you can see if 71/72 inners work w/the current drag-link (I've had different results on different trucks as a result of things getting changed over the years).

Also thinking of lowering the truck with the 4" coils from lmc, do I need to replace the pan hard bar, or will stock be ok? The 4" drop coils will prob be ok but you'll be reaching the point of diminishing returns. There are aftermarket adjustable Panhard bars & you'll want one to allow centering the rear end because as it gets lower it will shift to one side. The aftermarket Panhard bars come in different lengths (long & short). The longer the bar, the less side-to-side shift there is when the suspension cycles up/down while driving.
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Building a small, high rpm engine
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Cubic inches is like Indiana Jones with a cheap pistol....
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Old 03-27-2020, 11:19 AM   #17
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Re: Suspension pros and cons...

Yes I'd use the 71/72 inner and outter tie rods

If I have to, or if it is suggested, I'd go to no limit... thanks scoti

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Old 03-29-2020, 06:43 AM   #18
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Re: Suspension pros and cons...

Doing a 5 lug conversion, on the rear, will axle shafts out of a 94 1500 2wd fit in my 69?
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Old 03-29-2020, 02:18 PM   #19
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Re: Suspension pros and cons...

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Doing a 5 lug conversion, on the rear, will axle shafts out of a 94 1500 2wd fit in my 69?
No.
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Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
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Old 03-29-2020, 03:13 PM   #20
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Re: Suspension pros and cons...

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No.

Obviously to narrow?
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Old 03-29-2020, 03:48 PM   #21
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Re: Suspension pros and cons...

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Obviously to narrow?
The opposite. It's too long.
A 94 1500 (OBS) truck 10bolt is wider than 73-87 10bolt... which is wider than 65-70 12bolt rear end.
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Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
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Old 03-30-2020, 09:33 PM   #22
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Re: Suspension pros and cons...

When I converted my 68 to 5-lug parts from a 72, I had to also reuse the drag link from the 72 because the 67-70 is different from the 71-72. It may be easier to just convert all of it to 72 parts so ordering replacement parts is simple enough.
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Old 03-30-2020, 09:37 PM   #23
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Re: Suspension pros and cons...

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Originally Posted by 68Stepbed View Post
When I converted my 68 to 5-lug parts from a 72, I had to also reuse the drag link from the 72 because the 67-70 is different from the 71-72. It may be easier to just convert all of it to 72 parts so ordering replacement parts is simple enough.
I'm hopeing to find parts from a local junk yard, once the weather is good. Hopefully I can find what I want/need...
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Old 03-31-2020, 09:39 AM   #24
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Re: Suspension pros and cons...

Quote:
Originally Posted by 68Stepbed View Post
When I converted my 68 to 5-lug parts from a 72, I had to also reuse the drag link from the 72 because the 67-70 is different from the 71-72. It may be easier to just convert all of it to 72 parts so ordering replacement parts is simple enough.
I've experienced this as well. Back in the day, I would snag center-links from 71/72's just for that reason. But adapters for tie-rod sleeves started eliminating that need. More than one way to get it done now which helps but adds confusion.
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Building a small, high rpm engine
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Cubic inches is like Indiana Jones with a cheap pistol....
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