Knebel
Senior Member
Oh......... mkay. Im just scratching my head thinking that the holes for the power valve are too big.
Oh and i found specs for a 78 360.....252/252 stock cam. That would explain the "asked for 22° initial timing" i guess.
670 holley lean off idle stumble
- Thread starter Knebel
- Start date
Oh......... mkay. Im just scratching my head thinking that the holes for the power valve are too big.
Oh and i found specs for a 78 360.....252/252 stock cam. That would explain the "asked for 22° initial timing" i guess.
70bigblockdodge
Old Man with a Hat
Have you tried to run the car and see what you get with the secondaries disconnected and wired shut at least it will isolate which half you need to work on.
Knebel
Senior Member
Knebel
Senior Member
Hmm, i am getting closer to the right tune. It looks like thE engine wants the 68 jets in the primaries, runs best that way and gives perfect cruise afrs. I moved to the accelerator pump now and have a 28 squirter nozzle and the pink cam in hole 1(31 and orange cam was way rich everywhere). I have to adjust the idle afr to the low 13s in order to not be too lean while slowly easing in from a stop. I still get down to 11:1 with this pump setup occasionally and need to figure out how to time that pumpshot better so it comes in briefly later after the throttle plateplates are already cracked a tiny amount. I guess alternatively i could open the ifr a tiny bit... Accelerating while moving is perfect! It feels like a different engine already.
Similar threads
