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Street Rods

Our springs are cold wound, chrome silicon wire that is powder coated or chrome plated. All springs are color coded to reflect the pounds per inch when the springs are compressed. All chrome coils are baked per the industry specifications for safety and performance.

Spring Rate Guidelines for Street Rods

  Front Rear (lbs./in. )
4 cylinder, v-6 T-bucket, track T 300 160
V-8 (small block) T-bucket, V-6 hiboy roadster 350 180
’29 -’32 full fender coupes, “A” sedans (small block) 400 200
‘32 – ’34 sedans, ’35 – ’36 coupes (small block) 400 250
‘35 and up sedans, ’37-’40 coupes (small block) 400 300
Street Rods with big block V8 450# -500# for front shocks    

Color Codes: w/white r/red b/blue y/yellow g/green

6 Inch 8 Inch 9 Inch 10 Inch 12 inch
350# y/r       100# w/g
450# w/r 250# b   120# y/g 120# y/g
550# y/b 300# y 220# r 140# r/g 140# r/g
650# b/w/y 350# y/r 250# b 160# b/g 160# b/g
750# b/w/g 400# b/r 300# y 180# g 180# g
450# w/r 350# y/r 200# w 220# r
500# r/w/b 400# b/r 220# r 250# b
550# y/b 450# w/r 250# b 300# y
600# b/w 500# r/w/b 300# y 350# y/r
650# b/w/y 550# y/b 350# y/r 400# b/r
700# y/w 600# b/w 400# b/r
650# b/w/y 450# w/r
700# y/w 500# r/w/b
550# y/b
600# b/w
650# b/w/y
700# y/w

Drag Racing

654 / 659 / 754 / 854
Spring Rate Total Weight on Front Wheels
200
250
under 800 lbs.
800 – 1000 lbs.
275
300
1000 – 1100 lbs.
1100 – 1200 lbs.
350
400
1200 – 1500 lbs.
1500 – 1800 lbs.
450
500
1800 – 2000 lbs.
2000 – 2300 lbs
550
650
2300 – 2500 lbs.
2600 and up
658 / 858 / 758 / 658R
Spring Rate Total Weight on Rear Wheels
70
80
under 800 lbs.
800 – 1000 lbs.
100
120
1000 – 1100 lbs.
1100 – 1200 lbs.
140
160
1200 – 1300 lbs.
1300 – 1400 lbs.
180
200
1400 – 1500 lbs.
1600 – 1800 lbs
250
300
1800 – 2400 lbs.
2400 and up

Springs available separately

drag racing spring rateAircraft-quality, all-aluminum and all-American made, the Aldan Eagle rebuildable racing shock absorbers are state-of-the-art in drag racing suspension control. Models offer chassis tuners the choice of easy adjustability of either rebound, compression, or both! A six-position numbered knob controls the damping of the rebound (top knob) and a six-position numbered knob controls the compression (bottom knob). the double adjustable shock provides a 12-position rebound adjustment and six-position compression adjustment.

Damping Characteristics #758R