What Holley carb do I have here on my 350 please? Seems to be leaking around the accelerator pump / front of the carb somewhere so before I try and take it apart I'd like to get a service kit or similar. Engine ticks over OK but on trying to accelerate it feels like its only firing on four cylinders and the whole car is shaking itself to bits!!
Also is this a standard header plug gap clearance? It was so close that the rubber plug gap burnt to a crisp! Header has a dent in it to clear the plug cap, but even so it seems a crap design? Even now though the spark won't arc to the header as I thought that might have been the reason for a misfire but seems not...
PS just checked out your location your juuuuuust a bit toooooo far away from me otherwise i would have helped once again Cheers
Hi been thinking about your header/plug lead prob have you started your car at night so your engine bay is in the dark to see if its arcing accross as i had a similar problem (car running like a bag of shxxe) and my leads looked to be in perfect condition but ended up being U S so i changed them and had no probs after that .I would say you need a rubber boot/insulation on at the very least ,i would still be tempted to sort out the headers even if you just heat them up and recess them a fair bit more as you will just have the same problems again ,just hope this helps 
Will read up their literature tomorrow as I can't see what the difference is. Also going to test the vac secondaries are working properly - there is a definate stumble when you go to accelerate from a steady cruising speed. In the second pic below you can see that we have cable tied the primary linkage to the secondary and the stumble has gone and acceleration is much better. I've read that this is not a good idea to do this, but as a temp measure it seems to have proved something !!
