73 challenger 340 no top end power
#1
73 challenger 340 no top end power
have a 73 challenger has a 340 bored 30 over have gone threw engine and had heads done lets say the works. and at idle and low rpm it runs fine but wen i drive it runs fine till about 4000rpm its pops and spudders and has no power ......can anyone tell me what this could be thanks
#3
Mopar Lover
J -
Do you know what your total advance is?
A few random shots:
You might not be getting enough from the dist or vac advance.
Unfortunately too lean an A/F mix or restrictive exhaust can case the same thing. What kind/size of carb do you have?
Silly question, but you don't have a rev limiter on the ignition, do you?
Archer
Do you know what your total advance is?
A few random shots:
You might not be getting enough from the dist or vac advance.
Unfortunately too lean an A/F mix or restrictive exhaust can case the same thing. What kind/size of carb do you have?
Silly question, but you don't have a rev limiter on the ignition, do you?
Archer
#5
no rev limiter ....and carb is a holley 750 with dual feed lines may need to clean it out cause found some dirt in the rear bowl could be why cause wen i get to 3500 i try to give it about 80% throttle to listen to see if the rear butterflies open but i hear nothing may be problem now to think of it.. and dont know what a total advance is can you tell me more????
Thanks
j-man
Thanks
j-man
#6
Mopar Lover
It could be as simple as a bad power valve in that Holley.
http://www.angelfire.com/fl4/pontiac...lleyInfo2.html
http://www.angelfire.com/fl4/pontiac...lleyInfo2.html
Last edited by Silverick; 06-18-2011 at 10:56 PM.
#7
Mopar Lover
Good tech on ignition. http://www.diamondbackengines.com/te.../ignition-101/
#8
Mopar Lover
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