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hi i have a 68 340 engine slighty modified i was wondering which sparkplugs work better right know the car has rn14 yc in it i know the original plugs where n9yc any thoughts on those two or any better plugs out there also the car has a high energy ignition .

hi i have a 73 duster with a 68 340 engine with electronic ignition ,the car has a manual choke carb edelbrock 600 cfm the car starts up fine will stay runnig if i keep my foot on gas until it warms up but as soon as i put it in drive it stalls out . if i keep pedaling the gas it is fine once i...

hi i am looking to buy a 73 duster with a 71 340 engine . the questions i have are the car has two coils hooked up one is a dui pak that goes to distributer the other is a accel coil that goes to a skinny blue box i have no idea why , also the car has a 8 3/4 rear with 3.55 posi it was a 4 speed...

hi am looking at a ld 340 intake for my 72 340 .are they any good for a mostly street car ,what is the rpm range the engine is not overly built about 9.5 comp hi po exhaust manifolds is there any h p improvement over 1970 stock intake any help or info would be helpful. is the air gap better or...

hi i have a carter afb 625 cfm i am looking at a edelbrock performer 600 cfm is there a big difference between the two it is a street car stock intake stock exhaust manifold it is for a duster . what is the biggest and smallest carb i can use

hi i have a 72 340 after about 15 minutes of driving i get a stumble, surge ,of engine this only happens at around 1500 rpms and when there is no real pressure on gas pedal acceleration is good at high rpms runs fine new plugs new wires did this before i changed them any help would be helpful

i have a 72 340 in a duster i was looking at shorty headers any one use them, any better than hp stock manifolds and do they line up with existing exhaust:cheers:

hi i have a 72 340 mildly upgraded i am looking to get rid of points , has any one used the pertronix ignitor 2 ,if so are they any good if not any suggestions

hi i have a 73 duster with a 340 engine i currently have hi-po exhaust manifolds i was thinking about putting headers on i was wondering about shorty headers are they any good .is there any real difference performance wise i have dual exhaust

hi i just bought a 73 duster with a 72 340 it was rebuilt it has a upgrade cam specs unknown, it was built to 71 specs,it has a 70 intake and exhaust manifold, a carter afb carb ,it has a steel crank the heads are 72 j heads.my question is if i do a compression test what numbers should i be...