Hi Guys


I got my aluminum heads on my 440 and they are awesome.

Yet I am having a small issue with the car upon quick accleration. When I nail it, I have a stumble and bog before it takes off. Its a Holley street avenger 770 cfm sitting on a Holley street dominator manifold on a midly built 440 engine.

Mike
a

were did you plug the vacuum advance?? should be on ported vacuum. If it effects idle it's on the wrong spot.

I didn't I have a MSD probillit ditstributor. I capped off the advance port.

here are a few photo's




mike

do you have that brass fuel filter in there

GET RIDE OF IT

Yes I do, Why should i get rid of it.?

Mike

they clogg up

put an paper inline filter

Got it, I'm guessing I might be making a run to the part store tonight.

Mike

that fuel filter it cost me a tow home

it migth even be your problem , but it happened to me

Cool I hate vacuum advance does nothing for performance, What is your total advance at and when is it all in. you may need to install lighter springs in the MSD.

I think if i remember correctly its all in at36 degrees at 2500 rpms.

Mike

you may need to install lighter springs in the MSD


try to get full advance at 1000-1200 rpm

Won't that make it monster to start?

Mike

Ok, I'll give it a try. Can you tell me why you think it will work?

Mike

I have a 72 duster and a 72 road runner

the road runner had a bad igntion swicth

both cars have tach drive distributers

duster is locked / msd retard box too

road runner is centrifical advance


at the time didnt know what the problem was and swapped distributers

the locked distributer ( from the duster ) barely started the road runner but the centrifical advance was fine *38


with a starter butten on the starter relay it whould start but not by the ignition swich

the BIRD

Maybe it needs a bigger shot! squirter that is matt

Check the basics first, timing, then give the carb
a shot (engine off) to make sure you have a full pump
shot right from the instant you start moving the throttle

Ok, now I'm brain farting here. I must be forgetting something. I remember that with old vaccuman advance Dizzy. I first set intial, then plugged vaccum advance before bringing rpm's up to 2500 and set total for 35 degrees (10+)

I was all ready to do it, but forgot how to do it on the msd dizzy!
Is it as simple as me bringing up the rpm's to 1200 rpms and set my timing to 35 degrees?

Mike

What's the initial timing?

Total is great to set only if you have sufficient initial. IMHO, setting total, ignoring initial, on a street car is assbackwards. Set initial, then limit mechanical to hit your desired total number.

Try the simple most effective adjustments first.............turn mixture screws half turn out then see what you got.

WEll this has been kind of a long frustrating night. I brought intital up to 16 degrees and it ran well, but it was kind of a crap shoot. I set advance at 35 total and it seems to be working, but what a pain in the ass!

Mike