Well I had my 89 L98 dynoed again and again. These numbers are from two different dynos so i guess thats why the numbers are slightly different. What do you guys think?

This years best
249 hp
334 lb ft

Last years best
242 hp
325 lb ft


Mod List
89 Iroc L98
FlowMaster Cat-Back, Catco cat, EdelBrock Headers, EdelBrock Intake Manifold and Runners [Both ported], Air Foil, TB Bypass, Plenum Ported, AFPR, Gutted Air Boxs, K&N Filter, HyperTech Chip , 160 Thermo, Re-mapped Injectors, MSN Ignition, Accel Rotor, Beefed Alternator, Modded MAF, 3.42 Rear End, And some new Slicks

 

Man thats a bummer....all those mods...oh well take her to the track and look for ur differences!

Jay

 

nice numbers.

what type of dyno, and how did u dyno it?

 

Since you don't drive or race on dynos I wouldn't worry about it one bit. The ET and MPH you list in your sig are excellent. That's the way to measure the value of your mods. I didn't see a better converter listed. Add that if you haven't already and say hello to low 13s.

 

Its still has the stock converter. The numbers are not too bad when u avg in a 20 percent or so loss through the drivetrain for the auto trans i guess.

 

those nubmers give me hope for everything im goign to do... ill be pretty close you you with my motor...

stock l98 motor (1200 miles old) with speed density will have kand n filters, ported stock intake, ported slp runners, afpr,flow matched injectors, edelbrock 1 5/8 headers form my 305, 3 inch catco cat 3 inch exhaust.
also have 2400 stall, ls1 drive shaft and 342 rear end...


ONE QUESTION WAS WHAT DO YOU HAVE YOR FUEL PRESSURE SET AT WITH THIS DYNO RUN?

 

Not sure what to think of those numbers honestly. Judging from your track times and trap speed my lil LB9 should be right there too with my 3.23 gears. Maybe if I can launch the car I can match your ET as well. I have the stock intake parts as too.

However in real life, if I saw your car go a 13.40 it would be the fastest street tired thirdgen i have ever seen. I dont know why but every thirdgen I have ever seen around is a turd. And the ones I do see that might be fast never run at the track. Look at it this way, I have never been beaten by any thirdgen that wasnt tubbed out, or even seen one that would beat me. There has only ever been one thirdgen I have ever raced that was even close and that was on the street, thats pretty sad.

 

Not too shabby! Remember the car is a "package" deal- the dyno only tells some of the story. Don't be discouraged!

 

The thing thats kinda cool is that ive beated cars that put down more power than me.


Not sure what the fuel pressure was set at. PM me if you really want to know and i will go check.

 

nice numbers. I need to get to the track soon. My best 1/4 times we're 13.21@104.63 ,like 3 years ago. I got my car Dynoed last month and made alittle more HP then you but less TQ. Seems like you have it running very well.