lowering kit

[73 CORV]

:Can anyone advise me where I might be able to pick up a lowering kit eg;lowering bolts for a 73 coupe in Australia. Cheers

[Vettech]

You might try Ian at ChevParts Yenora, or Pontiworld down Albion Park way. I know I bought bolts from Chevparts many moons ago, but these were normal length, which still have some adjustment. Plus new rubbers/bushes etc.

[73 CORV]

Thanks champ I'll give them a try tomorrow.

[bfit]

standard bolts are 8" long.
you can buy  grade 8 bolts at any good industrial bolt suppliers.
Make sure you ask for grade 8 do not accept grade 5.
you will need UNF thread and nilox nuts ( I like grip nuts they are more reliable and you can buy them hardened. )

  grade 8 will have six makes on the head of the bolt

https://www.boltdepot.com/fastener-information/materials-and-grades/bolt-grade-chart.aspx
this will help
how far do you want to lower the car.
Bfit

[Vettech]

Oh, the reason I changed the bolts was that whilst doing something else I noticed the "originals " were rusted and bably collared, plus the rubbers had turned into concrete, I would imagine its a good idea to replace these at reasonable intervals. And yes Bob is correct they must have the five marks for grade 8.

[73 CORV]

Thanks guys, need to drop it another  1" at least, at the moment I have 8" bolts.

[bfit]

Have you got castellated nuts  on the bolts at the moment
What the measurement from ground to chassis just in front of the rear wheels
Bfit

[73 CORV]

150 off the ground I have nylon nuts

[bfit]

The nuts must be close To being as far down the bolt as possible,
The standard measurement would be 7 and 5/8"  ( about 194 mm ) to 8" ( 200mm)
Which means the car is already lowered around 1.5"
Bfit

Check these pages.
http://tech.corvettecentral.com/2011/04/c2-c3-corvette-ride-height-guide/

This shows where to measure chassis

http://www.c3vr.com/member_pages/4401_4500/4427/specs.jpg

[73 CORV]

The nuts are all the way down as far as they can possibly go. I'm trying to load a photo of the car but haven't been able to.

[73 CORV]

Cheers for the links mate I'll have to check my wheel sizes to.

[73 CORV]

installed 5/8 bolts 9'' long that was the longest bolts I could get it was enough for what I wanted Great result Tried to post pictures but wasen't able to