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Spitfire and GT6
  Suspension Spring Specifications

Front Springs

Model Part Number Free
Length		 Fitted
Length		 Spring
Rate		 Identifying
paint marks
Spit-4 (Mk I)
    from  FC 3,214 to  FC 39,527 		210566 12.21" 7.42" 150 lbs/in light blue
(Mk I)
post FC39,527		 209685 12.59" 7.8" 150 lbs/in green
Spit (Mk II) 209685 12.59" 7.8" 150 lbs/in green
Spit (Mk III)  214144 12.21" 7.5" 150 lbs/in purple
Spit (Mk IV) 214144 12.21" 7.5" 150 lbs/in purple
Spit 1500 TKC1881 12.35" 8.0" 180 lbs/in purple/white
GT6 MK I 212425 12.46" 8.06" 200 lbs/in -
GT6 MK II 212425 12.46" 8.06" 200 lbs/in -
GT6 MK III 212425 12.46" 8.06" 200 lbs/in -

 

      Rear Springs

Model Part Number Free
arch Height		 Fitted
arch
Height		 Spring
Rate
lbs/in.		 # of
leafs &
style		 Identifying
paint marks
Spit-4 Mk I 305894 - -1.88" 166 lbf/in
at the wheel		 fixed spring -
Spit  Mk II 305894 - -1.88" 166 lbf/in
at the wheel		 7 leaves
.2188" thk.
fixed spring		 -
Spit  Mk III  305894 - -1.88" 166 lbf/in
at the wheel		 7 leaves
.2188" thk.
fixed spring		 -
Spit Mk IV 159640 - - 110 lbf/in
at the wheel		 5 leaves
3x.38"+2x.25"
swing spring		 -
Spit 1500 159640 - - 110 lbf/in
at the wheel		 5 leaves
3x.38"+2x.25"
swing spring		 -
GT6 MKI 307324 2.38" - 86 lbf/in
at the wheel		 8 leaves
.25" thk.
fixed spring		 -
GT6 MKII 308499 3.47" - 93 lbf/in
at the wheel		 6 leaves
.234" thk.
fixed spring 		-
GT6 MKIII
(pre KF20001)		 308499 3.47" - - 6 leaves
.234" thk.
fixed spring 		-
GT6 MKIII
(post KF20001)		 159654 3.47" - 93 lbf/in
at the wheel		 5 leaves
2x.3125"+3x.375"
swing spring		 -

 

 

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last edited 03/18/10

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