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whats the advantage of the 4/7 swap in the firing order? is the advantage in the fuel distribution into cylinder #2? in the conventional firing order #5 and #7 pull fuel to the back of the engine and then #2 pulls to the front at the opposite end and gets lean. i was always under the assumption...

simple question really... which of these hypothetical cam profiles will make more usable horsepower and why? 290° advertised/ 240° @ .050" duration/ .475" valve lift/ 113°lsa or 270° advertised/ 220° @ .050" duration/ .525" valve lift/ 113°lsa

totally got rid of the TITANIC SIZED pushrod humps on the intake port of a "302" cyl.head, i was about to press in copper sleeves into the pushrod guide holes when i realized that i need some Gasoline Proof Epoxy.. anybody have any good recomendations on what to get? TIA.