cant keep my 302 running

[my1stf-100]

hi all i just got my 71 f-100 it has a 1972 302 i have put a new edelbrock performer intake and holley 4160 carb on it and i have less power then before i have a t-18 trans i have to start out in 1st now and it bogs down easy and and the engine stalls whan i come to a stop. i have sprayed carb cleaner to see if i have a vacum leak i have checked very hose and cant find a leak i think my timing is on but i dont know ther is no timing tab on the block i have put new plugs and wires on it and all new chargeing system.its a 600cfm carb on my old intake i had a vacum block for the power brakes and steering should i just run the lines to the carb or should i run them to the vacum block any help all would be very nice thanks for your alls time

[fordman]

did you adjust the new carb after you put it on. the facotry settting on new carbs is just a setting to make it run when you install it. its not always correct for the engine oyu put it on.

the brake booster vacuum line goes to the vacuum block coming off of the intake.

[my1stf-100]

i called holley and they told me how to adj the carb so i did but my carb has a place for the spark advance and pvc and brake booster vac lines im just at a lost i have spent so much money on parts and if i dont get it running right i think the wife is getting upset with me

[my1stf-100]

the carb has a single inlet fuel bowls and non- adjustable floats i think i got a hly-0-80457s

[fordman]

the dist and pvc both go to the carb. the brake booster uses intake vacuum.

[my1stf-100]

thanks ill try just running them to the carb and caping every thing else does anyone now how the timing tab on the 1972 302 works do you match the line on the balancer to the top of the tab or the bottom its just looks so diff then what i have seen before even in my book it looks diff the tab is like cerved at the bottom and top with no lines on the tab sorry all im just learning

[fordman]

i have one of those timing covers and the pointer out in the garage. i haven't looked at it in awhile. but you match the timing mark on the balancer to the edge of the pointer. you match it to what your timing is uppose to be set at. being that the engine probably has some wear to it. that reading can be different to what the book says. the book reading is for a new tight engine.

[Dragon]

the carb has a single inlet fuel bowls and non- adjustable floats i think i got a hly-0-80457s

Set both idle screws at 1-1/2 turns then turn one in until the engine gets sick. Turn it back out until the engine gains the most speed. Now do the same to the other side. Adjust the idle speed to where it belongs. Dizzy vacuum comes from the right side of the carb on the throttle plate housing near the front right mounting bolt.

Non adjustable floats is absolutely scary to us old Holley guys.

I have the 80508s on my truck 750CFM adjustable floats and electric choke and shiny body. I had to adjust the idle mixture and speed. Then I drove away.

[Banjo]

a stock out of the box 600 cfm Holley w/vacuum secondaries should work just fine (untuned) with a stock 302, it should't be so badly off you'd be stalling constantly. You have either hooked up your choke wrong, or it's falling shut, or you have a vacuum leak. Harbor Freight has large easy to read vacuum gauges for like $15 that are invaluable in diagnosis. I bet if you put a vacuum gauge on there, it's jumping (not steady as it should be), or lower than acceptable.
As for your timing issue, regardless if the engine has the correct tab or chain stretch or whatever, you can keep cranking the timing advanced until it will barely turn over (when engine is hot) and then retard it some and it should be close. At least when you go through that, you should be able to tell with a fresh chalk mark on your balancer (I used the white stuff they use to correct typing errors called whiteout to mark my balancer) which pointer is closer on your timing tab.
You said new charging system are you sure it's charging? An alternator that isn't charging will certainly make a vehicle run like crap until it just lays down. They'll stall at low speeds if you don't keep them loaded up and headlights and things will be dimmer than normal and they won't hardly get out of their own way.
Banjo.

[my1stf-100]

thanks to all of you for the help when i get over to my truck im going try every thing noted and if that does not work im going to buy a edelbrock thunder series avs carb i took the intake off and put edelbrock gaskets on it and new ARP bolts and all new hose so i hope that will take care of it i will see when i get the carb and dist back in once agean Thanks all

[Dragon]

Can I ask why the AVS? There is reason that they were discontinued years ago. There is also a reason why Holley never stopped production.

[my1stf-100]

i was reading about the qwik tune secondary air valve so you can adjust the spring load on it i thought it was a good idea other then that nothing im just learning as i go

[Dragon]

The Holly has it too it is the big round thing on the passenger side of the carb. http://www.holley.com

AVS had bad leaking problems in the old day.

[Dragon]

Quick not as altitude goes up idle vacuum goes down. At 5000 ft 15 is a good number.

[my1stf-100]

thanks all ill be at my dads shop in the morning so i have all day to get my 302 running like a ford agean and less like a chevy once agean thanks for all your help