PolaraFury
Well-Known Member
Any idea how much lift I can run on Isky 9005 springs?
Isky 9005 valve springs
- Thread starter PolaraFury
- Start date
PurpleBeeper
Well-Known Member
Not sure, but here are the specs
- Dual Valve Spring Set
- w/Damper
- OD 1.005/1.530 in.
- ID 0.725/1.110 in.
- Seat Pres. 185lbs at 1.875in.
- Open Pres. 465lbs at 1.225in.
- Rate Per Inch 430
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Why not just contact Isky and ask them directly.....avoid any confusion or guesstimates......just my opinion.....
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BOHNALITE CHRYSLER HEMI PROTOTYPE 1951
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451Mopar
Well-Known Member
On Summit the listed coil bind in 1.160"
install height - coil bind is 0.715"
Subtract how much space you want before coil bind, like 0.050", and max lift is 0.665"
Depending on the required spring pressures, the install height could be slightly increased, but seat pressure, and overall spring pressure will decrease.
Not sure, but the 8005A (400 lb/in, 135 seat), 8005SP (415 lb/in, 150 seat), and 9005 (430 lb/in, 185 seat pressure) seem to be based on the same outer spring, but with different inner springs?
install height - coil bind is 0.715"
Subtract how much space you want before coil bind, like 0.050", and max lift is 0.665"
Depending on the required spring pressures, the install height could be slightly increased, but seat pressure, and overall spring pressure will decrease.
Not sure, but the 8005A (400 lb/in, 135 seat), 8005SP (415 lb/in, 150 seat), and 9005 (430 lb/in, 185 seat pressure) seem to be based on the same outer spring, but with different inner springs?
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