right around 1500 RPM when driving up to about 1800RPM the truck hesitates and pops. If I give it more gas it overcomes the hesitation and it is fine. If it is just cruising though or going up a hill and I enter that RPM range I get the same problems. If I'm sitting in park or neutral I can go through the powerband without any problems, it seems only under load does this happen.
350 V8, stock 882 heads, Crane Energizer Cam, 2000-2300 stall, headers, hei- initial timing is 16 around 600RPM and at 3000RPM its at 32. runs about 5 PSI fuel pressure. I've messed with fuel pressure as high as 9PSI and as low as 4.5 with no changes to the problem.
350 V8, stock 882 heads, Crane Energizer Cam, 2000-2300 stall, headers, hei- initial timing is 16 around 600RPM and at 3000RPM its at 32. runs about 5 PSI fuel pressure. I've messed with fuel pressure as high as 9PSI and as low as 4.5 with no changes to the problem.