Rich it up! Put steeper cams on the squirters. Cleared up my bogs and gave me a better kick in the pants. I actually went from stock to the heaviest two cams in the kit, and it runs great now.
What are the heaviest. I went to the red front and black back and from stock 28 front and rear to 28 rear and 32 front.
Drove it to work today and it did pretty good. Just has that bog on real light accel. Cruising was smooth and hard accel was fine. Will bump up the primary squirter size again and look for a more aggressive cam
Mine was like that too. Would take off fine full or heavy throttle, but slow acceleration would bog. I don't remember which two I ended up with. I would have to go out and look.
Speaking of vacuum advance...you might want to try to bypass it and just go to the full vacuum port. My car really likes that.
Thanks, I went to the same setup and I still got a light transitional stutter still but much better. Went to a 37 and noticed some more power down low but still a stutter. I'm guessing with the 351 sucking nearly 20hg of vac at idle its a slight powervalve issue with the stock 6.5. Will swap it out tomorrow for a 10.5 and see what happens.
I've never had luck messing with different pump cams. 'Seems Holley knew what they were doing when they installed the stock cam. If you have an instant bog right off idle, you need a bigger squirter, however what you are describing is a part-throttle hesitation in which case you need a smaller squirter, which actually provides longer pump duration. First make sure your vacuum advance diaphragm is not ruptured and sucking air. That would create a part-throttle lean condition which can cause a hesitation.
Sorry missed a few posts here.... Have not checked vac advance. Will do that tomorrow and post results Makes sense that a smaller squirter would provide a longer pump duration...will throw a 25 or so on tomorrow as well. The carb is a mechanical secondary so no vac diaphragm.
Yeah, I'm talking about the diaphragm in the vacuum advance on the distributor, not "vacuum secondaries". Basically, if it bogs, then goes, a bigger shot is needed. If it goes - then bogs - then goes, a smaller shot is needed. Of course there are other factors that can affect it as well, but I'd start there.
