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Gents, I have previously posted about "issues" with my 73 340 Rally challenger that I bought a little over 2 years ago in "fair" shape with orig. eng/trans and 92K miles. Car had been mostly sitting for the previous 12-13 years with semi-regular starting and drives around the block. As...

Gents, as usual, I appreciate all the feedback/advice. 1) Trans. health: the only reason I had the local shop (working on other stuff) to pull the rans pan was because it was slightly leaking. We Did change the filter, but since the shop was not a transmission place, nothing else was...

I need to verify, but I believe it is 90W.

Gents, Here are a few pics from recent work to inspect/change the filter and fluid in the 727 trans of my '73 340 auto Rally Challenger. The filter was about 1/2 covered with very small bits of metal similar to what is visible in the bottom of the pan. Car has 92K original miles w what I...

All, Just to close out this string....Thx for all the advice/feedback. My local mechanic, pulled the gear set and re-verified contact pattern (twice) for no charge. He did recommend replacement of the new pinion bearing we just installed because he said is felt like it was binding some (?)...

All, THX...for the feedback. Chryco, I have heard that from the local "expert" on this subject. He has agreed to give me a "second look" at the set-up once the first tech/shop pulls it back out of my car. He warned that even if we pull it, find the problem(s), and make the correct...

All, SO, I ended up getting referred to a local shop that has a history of doing solid ring & pinion, differential and transmission work. I discussed my plans to swap to a 3:23 gear set with the lead tech and he seemed very familiar with the work and with mopar rear diffs. (My car car...

All, THX for the feedback. During my review of related posts in the archives, I have noticed that Dr. Diff. seemed like the clear winner, but I wanted to get an updated perspective. -TeeScott

Gents, After about 2 years of cruising with the original 4:10 (calculated by repeated driving test), rear diff. gearing in my "mostly original" '73 ralleye 340 auto challenger, I am planning a change to make it more "cruising friendly". Due to limited availability of local shops willing to...

Guys, TRULY appreciate the solid, detailed feedback and great pics of your beautiful challengers. Will very likely order a set of these VN510s for my 73 in the near future. I think they will really take my car's appearance to the next level. As you can see in the pics, though they are...

Austa, thx for the feedback. My braking system is ~100% stock. Single piston calipers on factory size discs up front and rear drum brakes. Though I do believe that these 8" wide wheels (w 4.5" backspace) will work fine on the rear, I can't find many references to folks using such 8" wide...

Guys, I have reviewed several dozen discussion threads on this topic and am 90% sure that a set of these wheels should fit on my 73 ralleye challenger without complications....but I wanted to get a little confirmation before I place the order.. Regarding tires, I plan to select series that are...

Gents, As usual, your support and recommendations are "pure gold" to me as a "somewhat' mechanically proficient car guy (I've pulled a few engines, changed transmissions and driveshafts, numerous radiators & accessories, leaf springs, shocks, etc... Mostly stuff I can do in my garage with a set...

All, I still have the 73 Ralleye 340 challenger I have mentioned in several posts over the past year or so. I received no history/details about the car from the PO. Quick summary of what I think I know: --Nearly stock '73 Ralleye optioned 340 car (92,500Mi) --original engine(Engine block #s...

Selling my 340 Ralleye car that I picked up locally last year in pretty rough shape. Car needed some attention/saving as it had seen only sporadic starting/short drives since 2009. Car is now safe, reliable and runs/drives well. Just really would prefer a 4-speed car to take to the next...

Gents, Found these at the NSRA Nationals event in Louisville yesterday & plan to install on my 73 340 challenger. I was just wondering if anyone has infor. about them? (tried a few quick internet searches, but had no luck) They are cast alum and the ScatPack logo is also a cast piece that has...

Gents, Just to follow-up and the sources I chose in case it might help anyone else: 1) Leaf Springs; General Springs were VERY helpful, reasonable priced and quite quick. Total Cost for both rear leaf spring packs was $320 and came with new rubber bushings installed in the forward ends. I...

ALL, Thx for all the advice..I ordered (& received) a set of replacement leaf springs(w front bushings installed), as well as a new set of rear shackles/bolts/bushings from General Spring. They had everything in stock and the total price was ~$420 (along with add'l $95 for shipping and $30...

Gents, THX for the feedback. This is exactly the kind of advice I was looking for....I do appreciate it. Final question: Rubber vs Poly for the bushings? Car is still running the "mostly original" engine (w an old-school LD4B Intake, 600cfm carb, long tube headers, stock mufflers)...

Forum Folks, I purchased a 73 Ralleye 340 car last year (w 92K miles) that has been rarely driven since 2009, and has LOTs of original parts in-place. As you can imagine, sitting so much coupled to 50-yrs of age has left nearly every rubber hose/gasket/bushing in need of replacement. By...