delievery valves
#2
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#5
Well it's def alil more involved but worth it if your tryin to get fuel.... It involves takin the pump off and getting it benched and gettin the barrels turned. But it yeilds some crazy fuel. While it's on the bench to you can get the pump balanced. Anyways these figures are from a stock 180hp pump. Stock plate with stock barrels was 171cc. Stock plate with turned barrels was 190cc. 100 plate in stock position with turned barrels was 326cc. 100 plate full forward with turned barrels was 445cc. Just so you know 500-550cc's is enough fuel to support 600hp.
#6
I agree playing with your p pump beyond fuel plates and DV's has its benefits. But it depends on what you want the truck to do if you wanna race, pull sleds then go wild get your barrels turned but if all your looking for is a decent street truck thats reliable and you can still tow with it I would just leave it alone once you start getting into the 300 cc fuel range it takes alot of air to take avantage of that much fuel and even at that your EGT's are high. Also you can take the life expectancy of you engine a chop it in half, I dont care what anybody says nothing is reliable above 500 HP thats 3 times the factory HP on a 12 valve