[abig84]

ive always wanted to do the 6.0 + 4l80 swap in my 86. it sucks on the highway with the th400 4.11s and 33 inch tires. at like 65 its almost at 3000rpms

so ill jump on the highway for 5 miles or something but it did survive the 40mile drive when i moved. my motor is from 73 so i always figured thats way to much stress for a 45 year old stock motor