Hi guys,
So i recently installed a 408 stroker in my 1966 ford custom 500. The motor was ran on a dyno and performed great. I put it In my car and installed a 750ss quick fuel carb, summit ready to run billet distributor, ran it around for a little bit doing the standard brake in procedures and everything was going great. The engine only has around 200 mi. Then it started missing under 2000 rpm??? No noises, all cylinders have great compression. I checked everything in the ignition system, replaced the coil with another blaster 2 coil, replaced the MSD 6A with a new 6Al system and am still is having the same issues. I pulled the plugs and noticed that both CYL 1 and 5 were very lean( whiter then white) so i replaced plugs and jetted up the carb from 74 to 76 on the primary side. It still was lean on cyl 1 and #5 cyl so i fattened it up to 80's on the primary and it still was showing lean on the front cylinders??? I sprayed stater fluid around the intake to check for vacuum leaks and it didn't show any of the typical signs. I am at a loss, and have been spending alot of time and money in the wrong places trying to fix this issue, just ready to cruise and enjoy the summer. Any advice or help would be awesome!! thanks so much
So i recently installed a 408 stroker in my 1966 ford custom 500. The motor was ran on a dyno and performed great. I put it In my car and installed a 750ss quick fuel carb, summit ready to run billet distributor, ran it around for a little bit doing the standard brake in procedures and everything was going great. The engine only has around 200 mi. Then it started missing under 2000 rpm??? No noises, all cylinders have great compression. I checked everything in the ignition system, replaced the coil with another blaster 2 coil, replaced the MSD 6A with a new 6Al system and am still is having the same issues. I pulled the plugs and noticed that both CYL 1 and 5 were very lean( whiter then white) so i replaced plugs and jetted up the carb from 74 to 76 on the primary side. It still was lean on cyl 1 and #5 cyl so i fattened it up to 80's on the primary and it still was showing lean on the front cylinders??? I sprayed stater fluid around the intake to check for vacuum leaks and it didn't show any of the typical signs. I am at a loss, and have been spending alot of time and money in the wrong places trying to fix this issue, just ready to cruise and enjoy the summer. Any advice or help would be awesome!! thanks so much