Okay so my temporary K10 I am using, until my project is done, has a 305 with a eldelbrock 1406 carb and TH350/NP208 in it. I tow a 23 travel trailer 4600lbs about twice maybe 3 times a year. It pulls it, but does not have much grunt to get it moving from dead stop well and my project probably will not be done for another two summers. So I have 2 questions:
1. I do not know the gear ratio because sticker says they are suppose to be 3.08 but all the running gear (trans and axles and engine in it when bought it) were change to mid-late 70s gear. So my question is there a way to determine gear ratio without taking off the diff cover??
2. What would help my 305 with a little more low end, however I still want to be able to go 65mph on freeway without the truck revving to high if possible. I am assuming a cam swap is what I am after, just curious what you guys would recommend for a 305, type and brand??
Thanks