The 428 has a stock stroke of 3.98". You get more leverage but gained feet per second of piston travel.Top end RPM is lower than a 3.5" 352 or 3.78" 390. So you have gained touque at the expense of RPM.When you pick parts that all work at a given RPM(sweet spot) that fits your expected performance. Modify the
oil system threaded plugsin block and allign up
oil ports with bearing holes. groved maine bearings. Cross drill crank chamfer
oil holes and polish the crank. It will never slobber as much oil as a sideoiler. I built a 406 in 68 and tried to turn 8500,didn't last.Want a killer cam TryC8AX-6250D Ford factory( trailer car only) cam .600" lift 330° 115°overlap Idled at 1800RPM. Side winder intake and 600 Holley came alive at 3000RPM But after turning 8400 it ratteled till it scattered.Hell 428 was for pulling 4000lb+ cars and trucks around.428 was a less expenseive choice for big block cars when demand went up for 427s.Ford put them in not customer ordered Cobras and passed them of as 472s and didn't tell anybody till later. I used a 428 in a big 63 1/2 Gallaxy w/C6 and 3.73 gears in 69.In todays eara stay below 11 to 1 more like 10.5 to one compression ratio soyou can run pump gas.It'ill make the outings less inconvient,being able to get gas anywhere you want.