What Causes this?

[russellmarling]

67 cst swb- My grandfather (who was also an ex drag racer) used to tell me that exact same thing and it has always worked for me.

[GREASEMONKEY72]

Originally Posted by 67 cst swb

Ok, here's the extent of my tuning knowledge...
1st... make sure the #5 & #7 spark plug wires aren't touching... they are right next to each other in the firing order... 1 8 4 3 6 5 7 2 ... so, they crossfire very easy......
2nd timing... I've heard and seen... start your timing as 10 degrees.... go out on the street, from a dead stop... put in first gear, hammer the throttle.... it should be sluggish... you won't need to stay in it very long to know... go back advance it 2 more degrees... repeat the hammering it from dead stop. advance 2 more degrees, repeat, etc... Once it "CLATTERS" on exceleration... back it off 2 degrees and leave it there...
3rd... adjust your idle screws... pull off dist vac line from carb... plug in vacumm gauge... and adjust idle screws until most vacumm is achieved starting at that 2-1/2 turns out mark... try not to get the screws any more than 1/2 turn difference from each other...

ill have to remember that