Ok well, I recently bought a rebuilt carborater, a rochester q-jet rebuilt by holly. I puit it on a month ago and the thing worked great for a week, and then it trashed itself. I have no horsepower in the upper range, the harder I hold the gas the more it bogs down, it ocasionally gets stuck in high idle when I park it and then back fires when i shut it down and it awlways loads up on me. So today I took it back, it had a one year warenty. But I have a freind who is a good mechanic and he told me he had recently bought a ford carborater rebuilt by Holly and took it back 3 times before he got a good one. So I said screw holly. I had them refund me for the rebuilt one, and spent another 170 on a brand new Edlebrock 800 cfm electric choke quadra jet. I will be installing it tomorrow. Hopefully, this will solve the problem once and for all. Ike Spreading The K5 Gospel!