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  1. straightlinespeed

    Did my 727 just die on me?

    I took my car for a drive today. Everything was good when I left the house. about 2 miles down the road I had to slow and turn onto a different street. When I turned the car downshifted to 1st (normal for this turn). When I went to accelerate, the cars rpms just kept climbing. I looked down and...
  2. straightlinespeed

    Kinda Stumped

    This may be vague and I'll try to explain the best I can. Driving my 71 Scamp with a 360/727 TTI's, stock rubber engine/trans mount and larger 1.03 torsion bars, I get a odd noise/vibration coming from the brake and gas pedal area under the car. When I am at a stop light and go to take off...
  3. straightlinespeed

    7.25 fitment

    Simple question.... Will a 7.25 rear axle from a 66 Barracuda, fit a in a 73 Duster?
  4. straightlinespeed

    Oddball 8-3/4 yoke

    I took apart a spare 8-3/4 housing that had 2.76 highway gears in it. To install some 3.23's. The yoke I pulled off the housing Im setting up was a 10 spline, and also the u-bolt style. I could not get it to fit my 7290 u-joint caps. The caps just sat at the top of the yoke. I assume, (like my...
  5. straightlinespeed

    Question about gear swap

    I was getting ready to press on the pinion bearing onto my replacement gear set (3.23) and noticed on the old set of gears (2.74) what appeared to be a thick washer below the pinion bearing. I pulled the bearing off of the 2.74 set and sure enough there was a thick washer probably about 1/8"...
  6. straightlinespeed

    Main Caps for 3rd member

    Im starting my build on my 741 case for my spare set of gears. The case that didnt come with any main caps but my brother had a set of caps laying around so I grabbed them. One side matches up perfectly, but the threads on the other side do not thread in the same distance as the housing. I...
  7. straightlinespeed

    Is this ok to use?

    I bought these used 3.23 gears and during shipping, I believe the ring bounced against the pinion and caused this small chip. Will this be ok to install and use?
  8. straightlinespeed

    Driveshaft Loop Options and Ideas

    Im going to be installing a driveshaft loop in my 71 Scamp when I do the frame connectors this spring. A lot of the driveshaft loops I see are like the Lakewood style that are 4 pieces and bolt to the floor. I would like to weld to the frame connectors instead of bolting it to the floor of...
  9. straightlinespeed

    741 case 3.23 gear set

    I was looking to buy a 3.23 gear set for my 741 case but the only sets offered are 3.55 and 3.73. Doing a google search I see that 741 cases did come with 3.23 gear sets. So Im curious, why are they not made anymore? Which probably cant be answered, but is it safe to buy a used gear set, if I...
  10. straightlinespeed

    Swapping gear with out hurting things

    So I have a question about swapping to a higher gear set. I currently am running a 727, 8-3/4 rear with 3:73 gears and a 2800 stall converter I was thinking of keeping the 3:73's for fun street use and using my spare center section as cruising gears. I have a 741 housing with 2:76 gears (or...
  11. straightlinespeed

    Where to buy?

    I need to buy both adjusters and the lock tabs for a 8-3/4 case. Does anyone know where to buy these from? Mancinis, Dr. Diff dont sell them. Anyone?? Thanks in advance!
  12. straightlinespeed

    Sure Grip Help

    I have 2 sure grip units, that Im trying to figure out. 1 has a number of C 30847 cast into it then stamped into it in a different location this number 22685X 2 22 65c. The other is identical except the last digits are 1 16 63a. I was told they were for a 741 case and I was hoping you sure...
  13. straightlinespeed

    RPM's

    Quick run down of my specs. 360, xe268 cam, magnum heads, air gap, Holley 670, TTI's, 727, 2800 stall converter, sure grip with 3.73 gears. I've noticed that driving 60 mph Im close to 3k RPM going down the road. At 70 around 3500 RPM. If I kick my car down to WOT I can literally almost...
  14. straightlinespeed

    Autometer Speedo Cable

    Never mind, I found what I was looking for!
  15. straightlinespeed

    727 trans cooler fittings

    Im getting rid of my bent, kinked trans cooler lines and switching it out to -6 PTFE Braided Stainless. From what I've searched I need a 1/8" to -6AN fitting correct? I just want to make sure there are not different sizes. Thanks
  16. straightlinespeed

    Lokar Kickdown adjustment questions

    Ok, So I was playing with my kickdown adjustment and I confused myself. Here is what I did. First way I had it... Adjusted the cable with a slight gap between the lock collar and the lokar bracket at the carb. 1-2 shift was about 15mph, 2-3 shift at about 35-40mph. If I remember correctly...
  17. straightlinespeed

    To use or not to use

    I just changed my torque converter and it had larger bolts with a slightly thicker head. Well now when I put the inspection cover back on those bolts rub the cover. So my question to you all is how many of you run the inspection cover and how many of you dont run them? Any harm in not running...
  18. straightlinespeed

    Grrrrr!!! Stupid Trans Pan

    So I have noticed this smell in the garage the past week or so... I just thought it was the snow blower which has a tiny gas leak. So I paid no more attention to it. Well today I go out and start fiddling with the car. I have to drop the trans to replace a torque converter and noticed trans...
  19. straightlinespeed

    My Xmas present to myself Came

    Yep, I spoiled myself this year! Now who is coming over to help me install it?? Oh did I mention we have to lay on my garage floor?
  20. straightlinespeed

    Edge Racing Converters

    Looking at buying one of there Street Edge Converters. Anyone run one here? Ive heard good things about them.
  21. straightlinespeed

    Clutch Style Sure Grip Parts WIW

    I dont have the entire sure grip. Just the guts of a clutch style. Is there any demand for all these pieces? I cant even tell you if everything is there. I've been debating of what to do with all this stuff. If there is demand for the parts I will toss them up here since I have the cone style.
  22. straightlinespeed

    Converter question

    If I have a externally balanced 360 with a B&M flex plate. What type of converter can I run? By this I mean, does it have to be neutrally balanced, like the one Im running currently?? Or can I use a weighted converter? In other words I want to swap converters so what do I have to change on the...
  23. straightlinespeed

    Kickdown adjustment with Lokar cables

    I was sitting here thinking and wondering about the aftermarket cables and if they are not adjusted correctly how the car acts. I did some quick research and went to Lokars website and downloaded the instructions for the 727/904 cable installation. That was saying to have the car at WOT and pull...
  24. straightlinespeed

    Ujoints (greasable vs. nongreasable)

    I did a quick search here but didnt find much. I thought a good discussion on greasable vs. nongreasable ujoints would be good. I know there are a lot of various opinions on this subject. Such as well the factory never installed them and they lasted X amount of years.Or Greasable are weaker...
  25. straightlinespeed

    Bent drive shaft?

    So I had someone tell me that a bodies particularly dart body styles, have a tendincy to have a slight bend in the drive shafts because of the length of them. Now I know they are not a exceptionally long shaft, but I was curious as to how many of you if ever have heard of this or had it happen...
  26. straightlinespeed

    B&M Converter is bad

    Brand new converter that was never run, unfortunately was in a box for a couple years so I cant return it is garbage. I have a new B&M 2000 stall converter that is junk! I have a issue with the car wanting to die as soon as you put it in gear and thats with the idle set at 1200. So here is my...
  27. straightlinespeed

    Another Vibration issue

    I have a similar issue as gunmetal72, but I think mine is from the front end. Here is my situation. Driving about 60 down the road and my car will start to hum or vibrate, but more of a hum. It continues as your speed up. If you let off at 60 and let it coast it will go away. If you...
  28. straightlinespeed

    Speedo Gear Help

    Im trying to figure out what speedo gear to use. I've tried the calculators that I've found online and I think it comes up wrong. My tire size is 205/70/R15. From the calculators it says my tire diameter is 26.30 Im also running 3:73 gears. Does anyone know what speedo gear with P/N I should...
  29. straightlinespeed

    Rear end fluid

    What weight are you guys running in your 8.75's with sure grips?
  30. straightlinespeed

    Seriously!!!

    WOW!! So correct me if Im wrong but Torque converters are Trans specific not engine specific correct???? The engine shop building my engine called and told me that my torque converter I gave them to balance my engine with was for a 318 not a 360. Its a B&M 2000 stall converter. They said it...
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