83 gsl dyno run
 

I got a chance to put my 83 RX on the dyno in my mechanics class. Ive got a racing beat Header and exhaust, and a K@N filter and it laid down 92 HP @7000 rpm. The dyno can only read at 30, 50, and 80 MPH so I couldn't see what it had at 6000rpm, But it had 65HP at 4500rpm in third gear (50MPH). It was pretty cool though because my friend just put down a sad 106HP in his 79 350 Camero (which is around what most V8's put down):p: and another guy spun 97hp in his 91 3.1L V6 Cavelier.

why such low hp's?
dont gsl-se come stock with 135hp?
plus headers and exhaust add like 20?
should be like 150 at least!

My car is an 83 with a 12A rated at 100hp @ 6000 rpm at the crank. Id guess a stock 12A would put down 70hp at the wheels so the exhaust and filter must have helped quite a bit. It should have at least 120hp at the crank now and possibly 130.

That is not exactly hwo it works. You need to conside:

- Drivetrain loss
- Engine wear
- etc

he said he had an 83 gsl, not a gsl-se. the gsl-se was only available in 84-5 and it was the only 1st gen to get the 135hp 13B stock. Plus, flywheel hp is rated a little higher than rwhp due to drivetrain loss. Rough guess would be ~20% drivetrain loss and the hp reading at 7000rpm is probably past peak.

A 120hp crank hp estimate would be a fair guess for his car.

My car also has 283000 kms on it.

92 HP is not too shabby! Good to hear some dyno results, you happen to have a scan of the dyno sheet?
And that is just with a filter and header.