440-6 Challenger temp thermostat

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440-6 Challenger temp thermostat #1446509 06/02/13 10:08 PM 06/02/13 10:08 PM
Joined: Aug 2011 Posts: 32 Stouffville Ontario 7 7434 mopars OP member
7434 mopars OP member 7 Joined: Aug 2011 Posts: 32 Stouffville Ontario	My 70 Challenger 440-6 has a 180 degree thermostat in it now I have serge at cruising speed when it warms-up after 15-20 minutes Should I try a different temp stat, or look for a electrical problem ?

Re: 440-6 Challenger temp thermostat [Re: 7434 mopars] #1446510 06/02/13 11:29 PM 06/02/13 11:29 PM
Joined: Dec 2007 Posts: 18,157 Mass DAYCLONA I Live Here
DAYCLONA I Live Here Joined: Dec 2007 Posts: 18,157 Mass	"sounds" like your experiencing a lean surge, what size jets and power valve are you running? have you ever set the outboard carbs fuel/air idle mixture screws? as well as the center carbs idle/air mixture screws?....and where's your timing at, initial and full?

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