But more importantly, I'm baffled why the 283/700R combo didn't work.
Can you give us more detail on both engines?
The 283 was a stock rebuild with .040" overbore. The problem lies in the fact that I'm an idiot some times making decisions. I talked to guys who said the 283 was a great little motor...blah..blah..blah... So i thought,why not. 1st why not was that I decided to go with 31" tires. The cars that these guys drove with the 283 had 26" tires and were probably 1000 lbs lighter.Even with the 3:40 gears, the 283 in a heavy LWB pickup is like a small weak person trying to ride a 10 speed bicycle up hill in tenth gear.I had to keep giving more and more throttle just to keep cruising.When giving it so much gas to keep going it would kick down a gear or two,so I drove it around in 3rd all the time. In 4th it felt like a Honda Civic climbing a hill. I dropped the 350 in and now it just cruises along fine without having to give it the gas more and less everytime there's a slight grade. The 350 has World Products S/R heads, an RV cam,edelbrock intake and carb. It gets about 2 MPG better milage and thats with a TH350 behind it.
The next step is to put the TPI unit on it and check the milage difference. I will be recording fuel consumption with every change. Then I will open up the 700r4, check it out and reinstall it. I will again check for milage and performance. Results should be quite interesting.
Hey Vile,Chris, boys.... anything else to add for the exact reasons why a small engine won't push a heavy truck?