67 Dart 270...Project Old School
I made a visit to Gateway Motorsports Park over the weekend to see how my Dart was progressing. Last time at the track was in July 2010 with the stock 7.25 rear and stock torque converter. The car now has the 8.75 with 3.91 gears and a 3200 stall converter. The 60 ft dropped from a 2.33 to a 1.95 best this time.
I learned a few things on this trip: 1) my radiator is too small - 230 degrees on my gauge is way too much. 2)make sure to leave the wing windows unlatched if you don't have outside door handles on the car. 3) I have a fuel system or ignition problem keeping the car from pulling past 4500 RPM. I am guessing the secondary fuel metering is clogged causing a lean out as the secondaries try to open and establish. This eventually results in the car missing/stumbling/refusing to rev past 4500.
The car some what improved from a 15.81 @ 86 with a 2.33 60ft to a 15.22 @85 with a 1.95 60 ft. Ordered a new aluminum radiator for it this morning. Once the cooling issue is resolved, I will wire the vacuum secondaries closed and see if it will pull past 4500. I am thinking the car should be able to run mid 14s with a tune and be able to sneak into the 13s with a mild cam and some home ported J heads.
I made a visit to Gateway Motorsports Park over the weekend to see how my Dart was progressing. Last time at the track was in July 2010 with the stock 7.25 rear and stock torque converter. The car now has the 8.75 with 3.91 gears and a 3200 stall converter. The 60 ft dropped from a 2.33 to a 1.95 best this time.
I learned a few things on this trip: 1) my radiator is too small - 230 degrees on my gauge is way too much. 2)make sure to leave the wing windows unlatched if you don't have outside door handles on the car. 3) I have a fuel system or ignition problem keeping the car from pulling past 4500 RPM. I am guessing the secondary fuel metering is clogged causing a lean out as the secondaries try to open and establish. This eventually results in the car missing/stumbling/refusing to rev past 4500.
The car some what improved from a 15.81 @ 86 with a 2.33 60ft to a 15.22 @85 with a 1.95 60 ft. Ordered a new aluminum radiator for it this morning. Once the cooling issue is resolved, I will wire the vacuum secondaries closed and see if it will pull past 4500. I am thinking the car should be able to run mid 14s with a tune and be able to sneak into the 13s with a mild cam and some home ported J heads.
