Well today i decieded to spend some money and by a vacuum guage for the carb.
I intalled a750 cfm Holley about a month ago and decided its what i needed to do to make this engine run healthy.

it was my first time doing this on this type of carb So tell me if i strayed from my goal.
my goal was to tune the carb to run at the highes vacuum i could get.
im hoping that this is what i should be doing??

i warmed up the engine drove it around the block , hooked up the vacuum to the port shown by Holley. Than i turned the mixure screw in a direction that made the vacuum read higher(away from 0 i did this till it ws high than started to go down slightly than i turned it back slightly to get that hight number
i repeated this for the other mixture screw as well

when i finished i had to turn down the idle a bit being the engine ran higher

i hope i did well

the vacuum on both is about 20" at idle. idle being about 700-850 not much detail on my rpm guage.

if this is the correct method.. im hoping!!

than next week i will maybe adjust the distributor it sounded good i did not want mess with this today.
about the timing do i remove the distributor vacuum line and plug before attempting and is 5 degrees a good start?
should i pay attention to anything in particular

thanks for your help and advice in advance

cheers

 

Hi,
You did do it right
except I would start out with both out 1 1/2 turns out from seat
and with the engine up to temp.
put the gauge on it and turn one in 1/4 turn and then the other 1/4 turn
If the vacuum goes up then turn each of them in another 1/4 turn each
when you turn them both in 1/4 turn each if the vacuum goes down
then go out 1/4 turn with each one,
But go in or out 1/4 turn at a time with each one to get the highest
vacuum reading you can
Thanks