Just completing a project and took it out for a quick test drive the last few days.. Very disappointing power in 3rd and 4th
The truck is a 1950 chevy 1 ton pickup with 1962 chevy 261. Rebuilt 261 specific rochester, good solid compression all around, timed with light to ball on flywheel ( believe flywheel is from 261.. Not earlier) .. Also tried timed by vacuum gauge, set carb with vacuum gauge, new glass bowl on top fuel pump, new lines. Adjusted valves when hot to .006 and .018.. Did it twice.. First time used ball on flywheel, second time used triangle
Truck starts great, idles great, has lots of get up in 1st and 2nd.. Will barely pull 3rd
The gas tank at present is a small tank zip tied to front spring with suction hose from fuel pump inserted to bottom of tank, checked with full tank.. Same power drop
Could the pump just be insufficent to lift fuel from approx 12 below pump and keep engine supplied in 3rd.. I think it shouldnt be the issue but thought id ask... New tank will be installed in about a week
Other suggestions.. With 5:14's i didnt think pulling 3rd would be an issue
