General question here in my quest to turn my plain-vanilla (but minty) DCM Caprice into something a bit more sporty yet economical, as she's my daily (80 miles/day) driver.
The car has the factory trailering package and seems to have a fairly tall stance. I just put in Tokico shocks, and the ride went from mushy with no road feel to where I now feel every candy wrapper and discarded lottery ticket I drive over. I spend a lot of time on 495 in Mass., the part that started out being smooth concrete 40 years ago, but now is just a series of speedbumps. The ride is fatiguing to say the least. I have a K2500 Suburban so I'll never need to tow with the Caprice.
I'm wondering what the effect of going to the Impala springs would be on mileage and ride/handling.
I keep reading of you SS'ers getting 22, 24, even 26 MPG, and this with a lot more rubber on the road than my stocker Caprice wheels and tires. I'm lucky to break 20. I can't help but think that if my car were a bit lower to the ground I might pick up a couple more miles to the gallon.
Checked out Summit, and they have Heavy Duty Moog springs (5419 rear and 5030 front) and total cost would be less than $200 for all 4 corners. Would these springs lower my car at all, or at least enough to affect mileage? How would ride and handling change? If I picked up 2 MPG, they would pay for themselves in just over a year.
What other options should I look at? I've heard mixed reviews about Eibach springs, and in any case, I don't think I can go with a real "lowering spring" as the Tokico shocks I just put on are for regular height (non-lowered) springs. I'm not sure if they're even compatible with Impala springs, come to think of it. They're the HE3651 the HE3667.
Just so you know, I recently de-skanked my intake, put in two new O2 sensors (thanks, Dal), I run the tires at around 37 PSI, and I try to keep my foot out of it. It does have the broken bolt mod on the passenger side rear stud, but it doesn't seem to be leaking. I get 19 MPG tank after tank.
Any and all help or suggestions will be greatly appreciated.
"Looking for the 30 MPG Supercar"