Posted this info below as well. The experiment seems to work!
Standard disclaimer, "this info is to be used at your own risk with no warranties expressed or implied - you could end up maimed, dead, or with a wrecked car."
Get MOOG part number 658A (double check that, it's the BB heavy duty Impala spring). It's a coil spring with the exact wire diameter as the F41 spring, but a little taller (has 10 turns). The stock F41 spring has 7 turns, and if you cut off the above Impala spring (using your 3" air powered cutoff wheel and dress the end to remove sharp edges) at the 7 turn point, VOILA, it's 12 3/8" overall length with the same spring rate as the F41 at 550 lbs/in, same wire diameter, and same overall spring coil diameter. If for some reason you want the later style spring that measures 12" get the 1969 Impala MOOG 6322 spring and cut off at the 7 turn point.
Just install with the cut end up and nobody can see it. Add a repro part number sticker for that special touch!
Mark
Standard disclaimer, "this info is to be used at your own risk with no warranties expressed or implied - you could end up maimed, dead, or with a wrecked car."
Get MOOG part number 658A (double check that, it's the BB heavy duty Impala spring). It's a coil spring with the exact wire diameter as the F41 spring, but a little taller (has 10 turns). The stock F41 spring has 7 turns, and if you cut off the above Impala spring (using your 3" air powered cutoff wheel and dress the end to remove sharp edges) at the 7 turn point, VOILA, it's 12 3/8" overall length with the same spring rate as the F41 at 550 lbs/in, same wire diameter, and same overall spring coil diameter. If for some reason you want the later style spring that measures 12" get the 1969 Impala MOOG 6322 spring and cut off at the 7 turn point.
Just install with the cut end up and nobody can see it. Add a repro part number sticker for that special touch!
Mark