[Aukai]

With the engine in, and on the ground the 350# coil over springs are too light. I have not scaled the car yet, so I''m just guessing, but have called Menscer performance, and ordered 400# springs for the front. I'm hoping for some stored energy, and not too stiff ride, we'll see how it works. I jacked the car for 4.5" clearance to the oil pan for the second picture.

[62 NovaWagon]

Second picture is better,

[Big Dave]

320 is about the stock spring rate. Surprised it sat so low. Where is your lower spring perch located on the shock body? I assume it is all the way down near the bottom. With such a soft spring you might have to run the lower perch up on the body to get the compression up enough to raise the car a bit (not going to dial in a 4-1/2 inches though).

I would look more for a 500 pound spring, though they tend to be shorter (five inches of free height and you want as much free height as you can get for weight transfer around eight inches or so). You need to know the inside diameter of your spring (depends upon the outer diameter of your shock body) and you can then find a spring with the desired spring rate and free height for your shock.

I used to run stock six cylinder springs (about 320 spring rate) with my big block to get a stance like you have. When I hit the gas the front end would rise over eight inches before I hit the stops (I used a turnbuckle with two pieces of short chain to limit suspension travel) for better weight transfer. I was very nose heavy at the time as I had cast iron heads on my '67 Chevy II. The six cylinder spring had a very tall free height and used a thin wire (compared to the V8 spring). This was useful for storing energy to lift the front end on a launch but allowing the front end to sink back down again in fourth gear for better aerodynamics (which was important to maintain stability since the car was hand full to drive on the top end).

Big Dave

[Big Dave]

Duplicate post

[Aukai]

There are about 3" of shock body threads under the springs at this time total. That is the bottom of the spring with the adjuster included in the 3". Now the top of the shock is in the upper fender buckets as seen in the picture here.