csb

Maby a little ot but i know that there are some serius knowlegs here,right?
Have this 383 csb with around 450-475 hp in there,and looking around the net for a timing curve.
Have know 12-34° whitout vacum.
Q.do i need ported vacum or full vacum?
Msd says ported and some outher says full.
Please help.

 

come on csb guys,give me a hint.

 

Might get a response if you say SBC as in small block Chevy.

 

Small block chevy or chevy small block,i think eweryone know what i talkin about,

 

Really? I don't see everyone.

 

I didn't have a clue... sorry.

 

Any body response to sbc then?

 

i ran full ported vacumn on my 327 long duration cam 292 ,and added lighter weights in the distributor along with springs and timed my car with a vacumn guage ,Just rotate the distributor till you get the highest reading and then back it off 1 psi .This may not be the correct way to do it ,But it ran awesome ,,,,, I have no timing tab on this motor ,And aftermarkets are off ...

 

My "serius knowlegs" only pertain to Fords sorry.

 

carcrazyjonh thanks i herd about that trick" erlier to day mayby thats the way to set timing!
But ported or not is the q.
full ported?are there a other way?

Sunyside there are no or little diff ford to chevy

 

I used full ported ,Didnt run well half ported .My one buddy swears by blocking off the advance ,But I dont agree with him.....

 

But what is half ported and how do you do that?

 

When you rev the motor vacumn port will have vacumn ,At idle nothing .Full ported will run advaced all the time ,What carb are you running ,If its a holley I can tell you which one ,An easy way to tell is with a vacumn guage ...Manifold vacumn is full ported ll and everthing above the butterflies is half ported vacumn

 

/\ What he said. Usually the port you want is on the baseplate of carb.