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Doug's 70 AMX Build |
Post Reply | Page <1 1011121314 17> |
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DoughertyAMX
Supporter of TheAMCForum Joined: Sep/20/2016 Location: Washington, Ind Status: Offline Points: 519 |
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I meant the spider gears in the twin grip carrier as pictured.
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Be careful - C only means that is what the factory installed and intended. My 70 was stamped with C - very clearly a C - but the gears inside were 3.15 The original purchase invoice for the car has a line item added: Gear ratio ---- $10 Yup - before the car was even picked up from the dealer, when it was brand new, it had 3.15s dealer installed. I counted teeth and verified. Yours was likely not changed like that, but hey, who knows.
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3312 |
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Edited by 1970390amx - Apr/16/2018 at 6:54pm |
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Online Points: 5905 |
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Interesting thread. A suggestion if I may, fabricate a Sheet Metal Panel to install in the trapezoid shaped hole between the trunk and passenger compartment. Been a long time since I did it... 90 degree bends on vertical side edges fit nicely into existing "Z" bends in existing side uprights, where I attached the new panel with some screws through holes added to the "Z" bend flanges, about a 1" wide "kick-out" flange lip along bottom edge forward lays on top of axle tunnel and another rear facing approx 1" flange along the top. Did / does wonders for a quieter cleaner and SAFER passenger compartment and meets track requirements IF doing a trunk mounted Battery, which should be mounted crossways left to right, NOT longways front to back like so many do on the rear passenger side...
Edited by PHAT69AMX - Apr/17/2018 at 2:54pm |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3312 |
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carrier to the right and in the back is a factory twin grip used up to 71. It is a two piece unit that instead if a pin to hold the small gears in place it has a cross and four small gears with two larger gears that spline to the axles. Front carrier I think came out of a hummer with 2;73 gears. It is a thorsen torque limiting carrier, no clutches.
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3312 |
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Carrier at left is a newer Detroit locker. On right is better picture of power lock twin grip used in 70 amx
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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DoughertyAMX
Supporter of TheAMCForum Joined: Sep/20/2016 Location: Washington, Ind Status: Offline Points: 519 |
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Thanks, so what I have is not a twin grip rear end correct? Also, you say these gears are easy to change. Any idea where i can get a set ?
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DoughertyAMX
Supporter of TheAMCForum Joined: Sep/20/2016 Location: Washington, Ind Status: Offline Points: 519 |
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Bill, yeah I took the cover off to specifically count the teeth and sure enough it is a 2.87, then I also found the broken teeth off one of the spider gears
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3312 |
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I would say to find a new set of gears to post an add in the wanted section, or buy a new limited slip carrier and install it
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Online Points: 5905 |
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Some old questions from throughout posts... I'm "AMX Jones-ing" since selling mine April 2014, owned since 1985... Sorry if "too much information".... - Top of right front fender...... ? Motor on hoist kinda got away from'em? - Did ya check for a "gap" or "hole" between panels outside the glass, directly rearward from the bottom rear corner of the small fixed side glass, trim, and rubber, on both sides ? My '69 had a dime sized or so "hole" right there on both sides between where panels came together that I sealed with silicon. Water could would did get down in there everytime washed or in rain... - Be careful Washing or Waxing the Car of the THE DRIP RAIL TRIM ENDS! Mine was Razor Sharp at both ends of the DRIP RAIL Stn TRIM. I got cut on it only one time... the 1st wash... - Firewall Pass-Thru Plate, extra holes handy for aftermarket gauges... - DynaMat is what I'd use, modern, gotta be better than "jute"... - Small Vertical Interior Side Panels behind seats: Have no picture, iirc mine were masonite, which seems ok, but... that sure does not seem "good" to use if any moisture. Eddie Stakes PlanetHoustonAMX sells them.... - Hood Latch, drawing from parts manual... - Carpet front top edge, iirc my '69 Carpet hung on the 4 Plastic "T" Plugs. Then was further retained by the Left & Right Plastic Kick Panels. I did not go as far as thehaving the Dash and/or "jute" being removed.... - Carb, I'm a Holley Guy and nothing compares to the performance of a properly set-up DoublePumper if Punch It & Blast is "your deal". And these guys gotta be tired of hearing this from me, but... Proper SECONDARY Idle Speed Butterfly "Park Position" is CRITICAL. - IF a "fair weather" only car, would block off the Intake Exhaust Heat Crossover. - Distributor: Any decision on a path of action, recurve original? - Brackets, Alternator, P/S, etc, Did you get install dwgs or Diagrams? - I myself prefer the early Script style 1x1 above the trunk lid, nice. - Opinion here: Pinion Angle, mine seemed "backwards", and had New Leafs. I installed Aluminum Wedge Spacers to "correct" Pinion Angle, see dwg... imho Pinion should point slightly down at rest, then with load it can rotate up ever so slightly towards straight... Mine stock pointed slightly up so would the go further up under load... Angles should be equal and opposite, Trans Tailshaft & Rear Pinion. - What's your opinion on suggested Steel Panel between Trunk & Cabin? - Gonna go with a group 19 Brushed Stainless Chin Spoiler? - Boy if the NOS Carrier that guy has in your Wanted Ad is the "Right One" would think could hardly go wrong getting that other than the big bucks for a Posi Carrier.... which then kinda "pushes" a person towards one piece axles... Ha Ha the "snowball effect" is a vicious monster to avoid! - Borg Warner Automatic Kick-Down Switch, reckon you're aware there is an Electronic Kickdown Switch under the dash that is actuated by an extra "Rod" on the gas Pedal Linkage... At least there was on my '69 with an BW M-12 Automatic Trans. Here's a vintage underhood picture of a brand new 1970 AMX Edited by PHAT69AMX - Apr/18/2018 at 1:40pm |
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