Need input on Steering Gear Ratio - The 1947 - Present Chevrolet & GMC Truck Message Board Network

May70 · 07-08-2022, 12:36 PM

I am putting an ls in my truck and upgrading to power steering BUT keeping the big original wheel for non PS.

Im reading/told conflicting info on the ratio I should go with. Quick ~3 turn 15:1 vs standard ~4 turn 18:1.

Im going to purchase a red head gear. They recommend the 3 turn and said only go with the 4 turn in power steering applications for offroad use with 36" plus tires.

Ive read some threads about finicky steering with a big wheel and PS upgrade.

I think im going to go with the three turn if anyone can confirm success with a big wheel. Thanks

jimijam00 · 07-08-2022, 12:41 PM

Red Head knows what's up. Follow their advice.

72SB · 07-08-2022, 01:03 PM

FWIW I put in a CPP 14:1 unit. I did not want anything tighter. I had PS and put this box in as a replacement. Plug & play.

IDK what the stock unit ratio was but 14:1 feels "normal" (read not twitchy, tight turn ratio)

I do however have a 14" steering wheel. The stock one, for me, was just to big making braking pedal access awkward as I had to bend my leg sideways and I am only 6'2"

https://www.cjponyparts.com/classic-...All%20Products

**HO455** · 07-08-2022, 04:01 PM

I have a newer power steering box in my Burban with the factory steering wheel. It is about 3 and a third turns and it drives nice. The old box was around 4 and a quarter turns lock to lock. I don't miss that box at all.

And for what it's worth the steering wheels are all the same (As far as I know. I’ve never seen a larger wheel, unless you start looking at C40s or larger trucks) for power and manual steering.

May70 · 07-08-2022, 04:54 PM

Quote:

Originally Posted by HO455

I have a newer power steering box in my Burban with the factory steering wheel. It is about 3 and a third turns and it drives nice. The old box was around 4 and a quarter turns lock to lock. I don't miss that box at all.

And for what it's worth the steering wheels are all the same (As far as I know. I’ve never seen a larger wheel, unless you start looking at C40s or larger trucks) for power and manual steering.

Thank you. I ordered 2856 (3 Turn/15:1)

tim_mc · 07-08-2022, 08:03 PM

FWIW, I have a remanufactured Lares #1075 3-1/4 turn steering box with P/S and my stock '67 steering wheel and love it. Steers with one finger and stable at highway speeds.

07-08-2022, 12:41 PM	#2
jimijam00 Registered User Join Date: Apr 2009 Location: PNW Posts: 553	Re: Need input on Steering Gear Ratio Red Head knows what's up. Follow their advice.

07-08-2022, 01:03 PM	#3
72SB Registered User Join Date: Apr 2022 Location: Moorpark, CA Posts: 701	Re: Need input on Steering Gear Ratio FWIW I put in a CPP 14:1 unit. I did not want anything tighter. I had PS and put this box in as a replacement. Plug & play. IDK what the stock unit ratio was but 14:1 feels "normal" (read not twitchy, tight turn ratio) I do however have a 14" steering wheel. The stock one, for me, was just to big making braking pedal access awkward as I had to bend my leg sideways and I am only 6'2" https://www.cjponyparts.com/classic-...All%20Products

07-08-2022, 04:01 PM	#4
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,813	Re: Need input on Steering Gear Ratio I have a newer power steering box in my Burban with the factory steering wheel. It is about 3 and a third turns and it drives nice. The old box was around 4 and a quarter turns lock to lock. I don't miss that box at all. And for what it's worth the steering wheels are all the same (As far as I know. I’ve never seen a larger wheel, unless you start looking at C40s or larger trucks) for power and manual steering. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

07-08-2022, 08:03 PM	#6
tim_mc Registered User Join Date: Jan 2019 Location: St Peters, MO Posts: 434	Re: Need input on Steering Gear Ratio FWIW, I have a remanufactured Lares #1075 3-1/4 turn steering box with P/S and my stock '67 steering wheel and love it. Steers with one finger and stable at highway speeds. __________________ 1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column.

07-08-2022, 12:36 PM	#1
May70 Registered User Join Date: Jan 2019 Location: Hampton Roads VA Posts: 644	Need input on Steering Gear Ratio I am putting an ls in my truck and upgrading to power steering BUT keeping the big original wheel for non PS. Im reading/told conflicting info on the ratio I should go with. Quick ~3 turn 15:1 vs standard ~4 turn 18:1. Im going to purchase a red head gear. They recommend the 3 turn and said only go with the 4 turn in power steering applications for offroad use with 36" plus tires. Ive read some threads about finicky steering with a big wheel and PS upgrade. I think im going to go with the three turn if anyone can confirm success with a big wheel. Thanks __________________ 70 C20 Build link : Project Montezuma http://67-72chevytrucks.com/vboard/s...d.php?t=794479 How to repair that rusted out 67-72 c10-c30! Please subscribe! https://www.youtube.com/c/MaycoCustomRestorations



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