SLP IROC-Z

iTrader: (1)

i have an 89 IROC, it has the crappy f41 suspension package, what factory third gen springs are the best the 1LE springs, the FE2 IROC springs or the WS6 firebird springs?

RB83L69

Doesn't really matter any more, they're all worn out, all of them, they're garbage, they're over 10 years old now. No sense in fooling around with a bunch of used-up stock springs if you're trying to upgrade something.

If you want a great set of springs with stock ride height, here's what you should do. Look up in a Moog paper catalog for the springs for some one of these cars, doesn't matter which one. Go to the back of the catalog and look in the buyer's guide section where they're all sorted and listed by their specs. Find the section for springs of this design (straight one end, ground tapered the other), then look down the list of outer siameters until you find the F car spring you looked up. Now pick out the one part number that has the highest spring rate in the whole group, with the installed height (nothing to do directly with ride height) that most closely natches the one yo looked up. There's one part # you'll come up with that way, wish I could remember it but I can't. That's what I have in my car, it's excellent. NAPA has the same parts (Moog) under their own part #s, you could go there and do the same thing. Then get a set of Moog CC635s for the rear.

SLP IROC-Z

iTrader: (1)

id be buying the springs new from GM

MdFormula350

i want to say the 1LE springs, not sure though but i think the iroc-z springs are the same as the ws6 springs..

SLP IROC-Z

iTrader: (1)

i heard that the WS6 has stiffer front springs then the IROC but softer rear springs then the IROC.

oh well im thinkin the 1LE springs would be the best choice

RB83L69

Waste of money, pointless.... they just buy the replacement ones from TRW or Moog or whatever and charge that wonderful cover charge for their label... they're not the same as what came in cars.

There's categories of parts: things that you have to buy at the dealer, things that you can buy at the dealer or elsewhere as you choose, things that are stupid to buy at the dealer, and things you can't buy at the dealer at all. Springs are in category #3.

iroc22

Well to answer the original question, the 1LE shocks and struts are a bit stiffer and a different part number than the WS6/FE2 equivalents. If you're going for performance, 1LE is the way to go.

SLP IROC-Z

iTrader: (1)

sweet, 1LE.NET has all the 1LE option part numbers, i can get the stuff for cheap from a guy that doesnt live to far from me

brodyscamaro

how good of a hook-up could it be?

avro206

89 IROCs came with F41??? My 88 TBI--15" wheel IROC has FE2