318 Build? Help!
Now that is a front bumper.
I did the same thing with a 78 power wagon, but I took out the 318 and put in a 5.9 mag, dressed as a LA.
Night and day difference. And the 318 was not wore out.
A good comparison, pulling my camper, the 318 would only pull a long up-hill reaching the top at 45 mph max, floor-boarded.
5.9 would top the same hill at 75 mph with 1/4 throttle, and got the same mileage.
If you are hell-bent on keeping the 318, seriously, add some stroke and compression, it will make a noticeable difference.