Posted: Tue Dec 14, 2004 2:12 am Post subject: Better fuel economy and/or performance for 1987 3-door
I recently bought a 1987 LS 3 door with 40,000 miles as a primary car. Perfect for around town, but the miles per gallon isn't stellar on the interstate. The fifth gear probably wasn't designed with 80 mph in mind so I'm wondering about the options. Can I have the fifth gear changed to a taller ratio and be effective? Right now it runs around 4500 rpm for 80 mph.
The car is wicked sweet except emmensly out of date. Where can I check compatability for aftermarket parts? I'm not looking for anything fancy. I'm considering some plugs, wiring, cold air intake, nicer seats for a kyphotic back, and some changes to tighten up the suspension. I'm a fan of rally cars but like the practicality of the stock car.
Honda/Acua motors run high in the rpm range - 4500 sounds about right. I wouldn't change anything, especially 5th gear. It's already pretty tall for your engine, plus it's the weakest gear in your transmission. Your car is listed at 26/30 city/hwy mpg, are you getting anywhere near that? If you wanted, you could always swap out your D16A1 motor for a B16A and tranny, the SOHC VTEC will get you better mileage, too. I think the motor is less than $400 and gives you around 40 extra horsepower.
Check out jcwhitney.com they have lots of sport compact parts.
It's what I feared, an engine swap. It could be a good thing. I am getting the 26 but the 30 isn't happening on the highway. How does Honda get the 35/38 (ish) for the ULEV and LEV cars? Anyway, a B16A sounds sweet but for now it'll have to stay on the wish list.
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