G force 101a9/13/2023 Plus I was able to sell each Jerico for roughly what I originally paid for them. And between the 3 breakage incidents, I doubt that I spent more on all those repairs, than an automatic guy would have, over the time (20 years with the Fairmont, 14 years for the Mustang), with similar performance. Even still, If Jerico had not discontinued making the parts, I would have stuck with them, as stuff does occasionally break, and I accept that. It was the later transmission that later broke the mainshaft. incident, when 3rd also broke, but the broken teeth got caught up in between the gears, which caused major damage (case ,top cover, several other gears, and knocked much of the snap ring groove of the input shaft). With the 10 year newer "improved" design, with less power, less weight, and less clutch pressure, I had a $1700. Funny thing is, all the years I ran the older trans behind the FE, the only transmission breakage I had was 3rd gear, which cost $300. I had the opportunity to buy a used DR4 at the same time, for a better price, and wish I had now, just as a back-up to the -4.īoth of my Jerico DR4s were also the older top & bottom loader magnesium case versions, the one behind the Fairmonts FE was a early 6 lug model which used regular Toploader input bearing, the trans behind the small block was the "superior" later 10 lug larger bearing model. I bought a used DR4-4 because of the lack of parts for the DR4, but wasn't aware of their change of heart on producing parts. Not sure if it's necessary on a Fairlane, but I would expect that it's pretty close. I also had to notch my tran tunnel crossmember to make room for the straight shifter rods for the V-gate. I posted about my Jerico installation in my Mach 1, so that may show you a couple of the changes you might have to make (link here if you want to check it out. I love shifting at the track with the Vertigate, but I can't compare it to the pistol grip because I've never used one.Įither way you go, you will have to cut a bigger hole for the shifter. I think the pistol grip would be easier to downshift because you don't have to reach over the shifter to pull up on the gate lever, but mine works for me. It's not the smoothest downshift, but it goes into gear solidly if you rev match. My Jerico has the clutch assisted sliders (not road race) and Vertigate shifter, and I can downshift on the street. I wanted something that could retain all the parts I had (Mark Williams driveshaft and stock crossmember). Same here on going with the Jerico over the G-Force. I am very happy with the G Force, but if the parts problem never happened, I would have kept the Jericos. I do like the fact that the G 101A has a "handcuff" to help keep the main and cluster shafts from spreading apart, especially in 3rd gear. The G Force is a bit heavier than the Jerico, as well as having a slightly taller main case. Both my Jericos and the G Force had similar gear ratios, so performance didn`t change, the G Force seems easier to shift, but that may be due to my G Force has the later "Pistol Grip" shifter, where both the Jericos had the older style Verti Gate shifters. So to locate the shifter where I wanted it, I had to order a different shifter mounting plate and rods from Long shifters, which is part of G Force. Also, unlike the Jerico, the G101A has just the GM trans mount pattern and position, so I had to modify my trans crossmember, as well, unlike the Jerico, which had multiple shifter bolt holes to move the shifter position, the G101A has a single MoPar style shifter mounting provision. Naturally, shortly after selling both Jericos, they changed their mind, and started making DR4 parts again! I did have to make a few changes to the car when I installed the G101A, like Dale said, I needed a new driveshaft, as the GForce was about 2 inches shorter than the Jerico (same 32 spline output spline though). I was lucky that a buddy had an extra mainshaft, but Jericos decision to turn their back on all the racers who were using their products, I figured I would buy a G Force G101A, rather than reward Jerico by buying a DR4-4. I broke a mainshaft in the Fairmonts Jerico, and when I called Jerico to order a new one, thats when they said they were no longer going to make any parts for them. I ran the older style Jerico DR4s in my Fairmont and 85 Mustang for 20 years, and I would still have the same Jericos, had Jerico made the wise (?) decision to deem the DR4 "obsolete", and chose to not supply replacement parts for them.
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