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

 

From what I remember it sounds like you did it correctly. 20" sounds very good, seem to remember only getting around 17" years ago. Might have to dust off the old vacuum gauge and see what I can do. Also, you must have a very stock cam, if I remember correctly the more lift the less vacuum..

Paul

 

You should retard the timing so the vac gauge reads 1" less than the max you get playing with the timing.