83 cutlass w/307 track times

I got to the track for three runs yesterday and thought Id share the results.

First my car: 83 cutlass with an 86 vin9 307
Stock engine thru manifolds
single 2.5" exhaust thru magnaflow muffler
B&M TH350 w/TCI 1800 stall converter
3.73 posi rear, stock tires

run1: bone stock
run2: carb with modified secondaries
run 3: modded carb and ECM with hypertech chip

run 1 run 2 run 3
60ft 2.437 2.444 2.352
660 10.603 10.602 10.266
mph1 65.04 65.74 67.28
1320 16.685 16.578 16.093
mph2 80.52 82.52 84.36

I was pleased with the results, they were right where I expected. A little more tweaking to the setup and I think this setup will get into the hi 15s.

Certainly not a world beater but its a really nice driver/cruiser.

yea a 4th gear would have been nice. In lieu of that, I am going to swap in 3.08 ratio gears for use with the th350.

I was both surprised and pleased by the chip's added performance.

I get what youre saying.

I altered the governor to shift lower because I could feel the power nose over when trying to rev 4500+. I think it is the 7A heads that are restricting things. Shift points about 4200rpm are just about right for my combo.

That, along with the little stock tires and the 3.73s I think would have got me into 4th gear on the track.

The car was originally a V6 car with TH350 so it was just easier to stick with the 3 speed than swap in a 200-4r, besides which I had the trans all built and waiting for a car to go in.

If I was leaving the 3.73s in there I would definitely use an OD trans.

yea i should mention i wasnt trying to "get up on the converter" at all.

green light....mash pedal...go.

I dont have a tach to tell where the TCI converter flashes to but it is pretty tight for track usage.