Thread: Need some help tuning

Tweet

Got a chance to play today (for a while at least) and changed out to the 68/72 jets. No other carb changes. 10000000000^10 X improvement. Gained at least 1in. Vacuum (about 14in) too. Idles at about 6-700 in gear smooooooooooooooth. Still a hint of a bog about .5 seconds into WOT but it recovers. I get a little ping after about 1-2 seconds into WOT. I may need to jet up a little more on the secondary but I think I'll take just a hint of timing out first.

I took her around town a little and onto the freeway for a couple miles and I'm letting her cool off so I can take a look at the plugs. Not sure I ran it enough (about 15-20mins) to change colors. I have one of those "Summit by Holley" fuel pump / regulator combos and I'm chasing the fuel pressure all over the place. Set it at 5psi get out and the gauge shows 3psi. Set it back up to 5 and its 6-7psi. Thing is all over the place. I forgot how freaking loud that pump is too.

Always interested in other's ideas. I will post with further results as they come. Hopefully it may help someone else.

Thanks to techinspector1, 36 sedan and camaro_fever68 for your help.