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yes right around 2200 rpms or so

always ran the large dynomax super but they would drone even with the H-pipe. maybe the H-pipe made it drone. never really liked the sound it was like they had a hole in the muffler. on a street car I will give up 5-10 HP. I would think that HP loss would be after 4000-5000 rpms only and not...

how much did it hurt performance ? what size motor ?

I like the walker quiet flow. they flow a litttle better than a stock muffler and have just a slight sound. no drone. they are between the walker fx sound and the walker big dynomax.

yes that is the one. how hard is it to put on. just need to take the bumper off ?

no behind the bumper ties in the rear frame rails lower valance. i will try wtb

yes i just see 1968 charger

do they make a rear valance filler or rear deck filler what ever it is called. ties the frame rails together in the rear. who sells them ? part # ?

then you would need a 1430# rod 62x52 stock is 65x52

when they go lean like that using smaller rods for the cruise mode will help. go one step like 73 to a 70 see if that helps

Ok 2 things still bother me lol. that converter is just slipping and eating up power with 3.23 gears. The other thing might not be true but those heads if not done right with bigger valves and being hog out and losing their velocity will kill bottom end torque.

I think you will need a fuel pressure regulator with that fuel pump

yes and sell the single plane and put on a rpm performer intake and help both more.

it's about 2 sizes smaller than the 509 should be good

what cam are you putting in ?

if the stall is too high for the 3.23 when cruising it will be slipping

not sure the cam is your only problem. 509 should turn on at 3500-3800 rpms. if i read right your running a 3500 rpm converter with 3.23 gears that's not good.

am confused the 346 was made from 1971-1973 and are opened chambered.

a new cam would be good with high lift and less duration @.50 the 509 was [email protected]. it will get your cylinder pressure higher and more torque. plus knowing it's degree in. sometimes the timing chain and gears are messed up.

there are open chamber heads they can't be 79cc can they ?