I hooked up one of those G-Tech accelerometer computers this week to run some base line figures for my recently aquiered 1988 IROC 5.7 Automatic

I wanted to get some baseline testing done before I started doing any tune-up and/or performance work on the drivetrain. This car has been sitting for most of the past two years and runs like a pig. I'm hoping someone out there has run some horsepower figures and 1/4 mile track times with a correctly running 350 motor so I can know what I should be shooting for.

I ran 5 general horsepower acceleration tests with an average Horsepower reading of 156.7 @ approx.4200rpm and a 'best' run of 163.3 hp.
I believe the horsepower rating at the engine is 240 for this year, and have no idea what % loss we have through the drivetrain. (tried to run a search here but came up empty)

This was with the old oil and dirty air filters. I just installed Redline oil in the engine, rear end and flushed the transmission, but havn't rerun the G-Tech yet.

Anyone else with a G plug in computer? Nitro

 

I have one but have not had a chance to fully use it yet... its hard around here to find a spot you can go from dead stop to a 1/4 mile at WOT without getting pulled over. All the rycers took the spots over and attracted the cops. I have a feeling that these meters are fairly accurate. I think though in order for it to be accurate you must do atleast a 1/4 mile. What were your torque readings and 0-60 and 1/4 mile times???

The only time I have is 0-40 in 3.1 sec.

 

I just remembered that the weight of your vehicle is a major factor in determining HP and TQ ratings, I would not trust the factory weight, i have been told this several times. Everyone told me to go to a truck weight station and get it weighed there.

 

I've got the Torque map written down somewhere, but havn't found where I set it-
I'll put them in a little notebook so that I can start measuring each step of the fine tuning process. Yes, it's VERY important to have a true weight of you and the vehicle. I'm choosing to do my runs with a full tank of fuel so that I can keep getting consistent accuracy. The local gravel truck scales in my area don't charge a thing for me to just drive up on the scale and read the automated weight reading.

I did my readings with the acceleration method; which is where you hit a certain rpm in a first gear rolling start before flooring the accelerator. That way I didn't have to do a 1/4 mile run and **** off other motorists. My local Sears Point racetrack hasn't opened for it's Wed night season yet which is where I'll go to get the actual 60 foot times. Nitro