Terry Walter’s put my Pontiac 400 HO engine on the dyno stand this week. The first run with my Quadrojet carburetor did fair but after the first run things went down hill. After the hood was placed on top of the carburetor, the engine was running very erratic and choppy with the dyno numbers falling bad.
The symptoms where showing signs of an ignition miss. So Mr Walter’s spend several hours changing out ignition items with no luck. He ran mutable runs on the dyno that he normally would not have had to. They finally decided to try a different carburetor and that did the trick. They tried two different carburetors they had on hand and both produced about the same numbers.
I was quite pleased with the way the engine ran and how it sounded. Mr Walters is ordering me a new carburetor to get the engine in a tuned state before handing it over to me. He was willing to tie up his dyno and leave mine on while waiting for the new carburetor to come in. He has been such a great person to deal with and he knows his engines.
Here is a video of the last run.