OK, I haven't done any research but I have been pondering, what is the difference in a coupe and a sports coupe.

IMS, the difference in 84 was which transmission they used. The 4.10 was for the sport coupe. In other years, it is probably the suspension.

The 87SC I have has one of the stiffer suspensions. It's not WS6 but in a way that is good. I don't think I'd want this car with any stiffer springs. (the L4 and tranny are setup the same as all others far as I know.)

I think I have Y99 package. The springs are plenty stiff. (Second Stiffest front and rear on the RPO list in my cave. Options section. Link at top of page.)

I added Gabriel premium gas shocks/struts but have other wise done little. I did add polyurethane cradle bushings but the rest of the car is bone stock. When I replace the control arm bushings I will be using Moog rubber parts. (Bushings are also covered in my cave.)

The good shocks/struts did amazing things for the car... For one thing they proved that the simple act of controlling wheel travel in both bump (compression) and rebound (extension) supresses most if not all of the bump steer problem the car rags and many others will tell you Fiero has. A good alignment also helps. If you are doing SCCA racing then you may want other work but for most cars good shocks/struts will solve allot of issues.

Gabriel premium stuff is available at Pep Boys and many others and it's usualy pretty inexpensive. For the money I think you'd be very hard pressed to beat it. If just bought Gabriel Pro Ryder struts with VST for my 86 caravan for about $44 each. The Fiero shocks and struts only ran me around $120.

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Nobody loves me. Everybody hates me. Guess I'll just go eat worms.

One more thing is the steering ratio. The sport coupe has 3 turns lock to lock, while the other one has something like 3.5. It's a tighter feel in the steering wheel. At least that's the way it is with my 85.

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"We are the music makers... And we are the dreamers of dreams..." -Willy Wonka

According to Gary Witzenburg's book.(1984)
"At the very bottom stood the base WS-9 Fuel Economy Leader, also called simply the Fiero Coupe and coded PE-37. This $7999 version amounted to more than just an option package, although that's how you ordered it. The Fuel Economy Leader came only with the MY8 4-speed manual transaxle with 0.73 overdrive top gear amnd a high mpg 3.32:1 axle ratio.You couldn't order air conditioning or the automatic transaxle, but you did get all the Fiero's normal standard equipment, including P185/80R-13 glass-belted radial tires on 5.5-inch steel Rally wheels. The Coupe Fuel Economy Leader was actually the only Fiero capable of meeting GM's fuel-mileage target of 50 mpg. It's published 1984 EPA highway/city figures were 50/31.

Next up the scale came the $8499 Fiero Sport Coupe, the so-called base car. It's gearing differed from the Fuel Economy Leader's in that it had the M19 4-speed (0.81:1 fourth gear instead of 0.73) and 4.10:1 differential ratioo (versus the Fuel Economy Leader's 3.32:1). This gave the Sport Coupe much sprightlier acceleration than the Coupe, since it's final drive ratio was 3.32 as against 2.42. You also got a standard Delco AM radio in the Sport Coupe plus Level II deluxe luggage compartment trim. And you could order practically any options you wanted including a/c and automatic.The MD9 Hydromatic 125-C, by the way. ran a 1:1 top ratio and a 3.18:1 axle. EPA estimates for the M19 4-speed were 42/26 mpg; for the automatic 37/25 mpg."

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Notchbacks Rule
84 Coupe(parts car)
85GT(show car)
87SE Gold(project car)
87SE Silver(daily driver)
88Coupe (daily driver)
88Formula (daily driver)

[This message has been edited by Fierobruiser (edited 07-12-2003).]

thanks guys and I was wondering if my 85 sports coupe has fairly low numbers and the end of the vin, would that effect the value.
my vin is 1g2pm37r0fp200728.

Gotta disagree on the manual tranny for a "Sport Coupe" edition in 1984. My 84 Sport Coupe was an automatic. (Even had factory decaling of "Sport" across the doors.) The only difference I personally saw in my Sport Coupe and a "coupe" model was the seats. Mine were 100% grey without the dark grey lines going down the middle of the seats. Otherwise, it was pretty normal of a coupe. I even had LESS accessories/niceties than other Fieros in 84. All I had from the factory was A/C and I believe the better cassette deck was from the factory.

The definition of the sport coupe likely changed slightly just about every year....

My 87SC is factory automatic. It has 2.84 gears.

It's mostly what trim and other options the car has. The only suspension thing is probably using stiffer springs than a base coupe.

BTW... That I'm aware of there are no over driven 4 speed stick. 4th is 1:1. The TH125c and 4T60 is 1:1 in third. 4T60 and the 5 speed sticks have over driven high gear. (I mention 4T60 only because a number of people have converted to it.)

Ogre

According to the production figures I've seen, the 'Sport Coupe' was only available 84(62,070),85(23823),and 86(24,866).

According to the 22P in 1984 The MY8 trans was listed with a 4th spd input gear (476725) of 48 teeth and 4th spd output gear (476723) of 35 teeth. The M19 had 4th spd input (14066955) 47 teeth and 4th spd output (14066956) 38 teeth.

I don't know what this calculates to, you can do the math.