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INFO: The Coil Spring Thread |
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72FordGTS 
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GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 6780 |
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 Posted: 05-March-2026 at 2:52AM |
Those Moog 9046 springs are the base model Crown Victoria springs and are only rated at 421 in/lbs. RockAuto only shows the LESJÖFORS 4127547 available for the CVPI. The husky springs, part number SC20102, are no longer in stock either. Eaton can probably get the CVPI springs too.
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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72 RS 351
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Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 3443 |
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Posted: 05-March-2026 at 7:52AM |
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Hmm, RA has a rear spring similar to the AC Delco, and a non police front, but no heavy duty one at the moment.
Do you know what that progressive rear spring is like, it states .59" wire and about 163lb per inch rate?
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Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000 rpm 351 stroker 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
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Armkb
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Joined: 24-April-2015 Location: Livingston, NY Status: Offline Points: 26 |
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Posted: 21-March-2026 at 9:23AM |
  Found Lesjofors rear spring part#4427502 on Rockauto for $93.79 a pair. Has a wire diameter .620”, outside 7”, inner 5.25”, height of 15.24”. Pigtail is similar to the cargo coils I removed. Rate should be 150-170lbs.  Edited by Armkb - 21-March-2026 at 2:47PM |
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Armkb
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Joined: 24-April-2015 Location: Livingston, NY Status: Offline Points: 26 |
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Posted: 21-March-2026 at 2:43PM |
  Replacing center diff. Pilot bearing on pinion was bad and ring gear had chipped tooth. Upgrading to a 31 spline diff and axles. Also adding Spohn upper and lower control arms, KYB shocks, PMT sway bar.
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72 RS 351
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Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 3443 |
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Posted: 22-March-2026 at 12:48AM |
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Very good, shame you had a bad pinion bearing, but that's a good plan to improve things.
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Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000 rpm 351 stroker 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
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Eliteman76 wrote: