Might just need the manual box pitman arm with the smaller spline shaft.
So Borgeson lists compatibility through 1972... does anyone know what has to be changed to work in '73+ cars?
IIRC there is a 20-1 box out there.
There are also quick ratio idler and pitman arms, (iirc with 16:1 box and quick ratio pitman you get 12:1 or there abouts)are you sure your pitman is OEM non quick ratio?
I am no suspension guru, but doesn't caster keep the car driving streight, which for autocross would not seem to be a need.
Lots of good information here, I would like to add. The tire size here seems to be the largest downfall in this app. I have a 72' Dodge B-300 van that I installed TA G60's on a 15" US-Indy rim(special ordered). About every 3 years I need to have the frame at the gearbox welded, due to cracks. Never had that problem with the stock tires. The wider tire takes much more effort to move then the thinner ones. I like my profile of the van, so this is what I have to live with. Enjoy!!!!It helps with good steering return as well, which is also a good benefit to have racing. That's what causes the wheel to want to return to center. Positive caster. But, a lot of serious road racing vehicles do run very low and even negative caster. It all depends on what you're doing.
talk to @BergmanAutoCraft he has complete setups or can piece together what you wantSo Borgeson lists compatibility through 1972... does anyone know what has to be changed to work in '73+ cars?
do they have a mopar kit now? last i looked, ~18mo ago, they just had a universal onethrow one of these on that or adapt a Prius/Nissan PAS box
Electric Power Steering - American Powertrain
yup, just got this working
View attachment 1715769336
My 383 4-speed '68 GTS has a 16:1 box with fast ratio arms. G70-14 polyglass on the front. It has the original steering wheel and 100% stock front end, iron heads and exhaust manifolds. It's heavy and quite fun. Definitelt takes some muscle and finess in a stick car. That steering wheel is killing your good time IMO. Look at quarter max or speedway for a bigger wheel in that style.
only done one test drive so far but it's just right. full assist is firmer than a stock 60's P/S setup, not over boosted, but still 1 armed parking lot doable. with the assist at it's lowest it's almost as if it's off. i used a kit from EPAS Performance. it's a very nice set up and if i'd used the stock column, and just followed their instructions, it would have gone easy. since i had an IDIDIT tilt column i wanted to use, i managed to over complicate it, much to my enjoyment . also the floor plate for their kit is only for a 65'. they didn't realize all the different A-body floor plates that were used. i've sent them the info to correct that. i just made my own from 3/8" aluminum. as far as the alternator, i already have a 75A powermaster with a lot of re-wiring. supposedly this only draws 9A maxhow do you like it? I have no idea what kind of current something like this might draw. Did you need to upgrade the alternator or anything else?
only done one test drive so far but it's just right. full assist is firmer than a stock 60's P/S setup, not over boosted, but still 1 armed parking lot doable. with the assist at it's lowest it's almost as if it's off. i used a kit from EPAS Performance. it's a very nice set up and if i'd used the stock column, and just followed their instructions, it would have gone easy. since i had an IDIDIT tilt column i wanted to use, i managed to over complicate it, much to my enjoyment . also the floor plate for their kit is only for a 65'. they didn't realize all the different A-body floor plates that were used. i've sent them the info to correct that. i just made my own from 3/8" aluminum. as far as the alternator, i already have a 75A powermaster with a lot of re-wiring. supposedly this only draws 9A max
edit: 15" steering wheel
View attachment 1715769724
Wide tires will often increase the slow speed steering efforts as well.
there are threads on reusing toyota setups and others.LOTS of great information in this thread!
So what tire size on the front, what rim width, what back spacing?