69 Mach 1 Engine cutting out issue

Alexcrowe915 · 07-16-2009, 02:29 AM

Here is the problem. My buddy just installed a brand new 351w stroked to a 418 motor along with a TCI automatic transmission in his 69 mustang. Car started out running well but after a bit of driving we noticed a huge problem. When the motor hits about 4500-5K RPM's when accelerating extremely fast, the car seems to pull and forces the motor down to cut down to about 2K RPM's. My buddy and i uploaded several videos to youtube for people to check out and perhaps give us some advice on what could be the problem. We just replaced the dist and added an electric fuel pump thinking the problem may be solved but not so. Anything helps! Thanks for looking!

YouTube - Mustang cutting out at high rpm
YouTube - Mustang Cutting out at high rpm

Alexcrowe915 · 07-16-2009, 12:36 PM

Appreciate the few people who looked at this thread but we found the problem. A little brass piece in the carb was restricting fuel enough to cause the car to cut out at high RPM's. Problem solved!

bmxmon · 07-21-2009, 04:44 PM

Glad to hear you figured it out. That would have driven me crazy!

07-16-2009, 02:29 AM	#1
Alexcrowe915 Rookie Join Date: Jul 2009 Location: Tulsa Posts: 2	69 Mach 1 Engine cutting out issue Here is the problem. My buddy just installed a brand new 351w stroked to a 418 motor along with a TCI automatic transmission in his 69 mustang. Car started out running well but after a bit of driving we noticed a huge problem. When the motor hits about 4500-5K RPM's when accelerating extremely fast, the car seems to pull and forces the motor down to cut down to about 2K RPM's. My buddy and i uploaded several videos to youtube for people to check out and perhaps give us some advice on what could be the problem. We just replaced the dist and added an electric fuel pump thinking the problem may be solved but not so. Anything helps! Thanks for looking! YouTube - Mustang cutting out at high rpm YouTube - Mustang Cutting out at high rpm

07-16-2009, 12:36 PM	#2
Alexcrowe915 Rookie Join Date: Jul 2009 Location: Tulsa Posts: 2	Re: 69 Mach 1 Engine cutting out issue Appreciate the few people who looked at this thread but we found the problem. A little brass piece in the carb was restricting fuel enough to cause the car to cut out at high RPM's. Problem solved!

07-21-2009, 04:44 PM	#3
bmxmon Registered Member Join Date: Mar 2004 Location: Minnesota Posts: 950	Re: 69 Mach 1 Engine cutting out issue Glad to hear you figured it out. That would have driven me crazy! __________________ Alex

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