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I have a 440 sixpack with a mild cam,40 over.Can someone please advise the correct timing .And why the timing is changing with the slightest pressure on the throttle. Could this be caused by weak or damaged springs in the distributor?

1971 Challenger 440 sixpack ,have been having backfire when shutting the car off in park.It does not backfire if I shut the car off in drive,with my foot on the brake.Is this mostly a timing issue?

Replacing 440 sixpack valley pan and Edelbrock aluminum intake on an original engine. I noticed when dissembling that the previous owner had used 4 gaskets. question is would it be necessary to use 4 gaskets again or can i just use sealant on the bottom of the valley pan? And gaskets between the...

Need help to narrow down gas pooling on top of valley pan.The car is a 71 challenger rt with a 440 six pack.Just had the carbs rebuilt, now I gas leaking on top of the valley pan.Also gas is spraying onto the oil pressure switch.The carb gaskets are dry and I don't see any gas leaking from...

Can anyone please advise on tire size for a 1971 Dodge Challenger Rt? Currently have Hoosier pro street size 29 12.50 15 on the rear with 15 by10 magnum 500 wheels?And 28 9.50 15 on 15 by 8 wheels on the front. Has anyone used B.F.Goodrich or Cooper Cobra size 295 50 15 on rear and size 245 60...

Does anyone have a mechanical fuel pump for a 71 Challenger Rt 6 pack that they would like to sell.Needs to be in working order.With 6 psi output.Prefer an Edelbrock model number 1723.Having trouble locating a new one due one.Thanks for reading.

Can anyone tell if a 6 pack 440 idle solenoid can be rebuilt or where one can be purchased?I can't afford to spend 600 bucks on ebay.

Can someone please advice the procedure to safely bump the engine in order to get the push rod for the fuel pump high enough,for the arm to to be in the proper position,for the bolts to be tightened.Does the pushrod need to be removed before bumping the engine and then reinstalled.

Can any mopar experts out there recommend a reliable fuel pump for a 71 Challenger Rt with a 440 sixpack.Without a regulator,Does anyone know the max psi that is needed.