Gigi rides again - with some issues

[Don Frelier]

Well your cam timing may not be correct if you didn't degree the cam. And 383s aren't real tolerant with a somewhat performance cam.

You're going to need a pretty good initial advance with that set-up and probably a higher stall converter.

Try 20 degrees initial and maybe go higher.
I would also try full manifold vacuum on the advance. But you'll likely need to restrict the mechanical.

You should be able to get it to idle at 650-700 with some tuning.

Do your other tests you mentioned like pulling a plug wire at a time and checking the plugs.
I've seen bad spark plugs right out of the box.

 

[RemCharger]

Agreed^^^ that's a good sized cam for the low compression, will need more advance at idle..and it's a 78 440

 

[subforry]

Ignition advance is in the 18-22 range. I think the mechanical advance springs are weak and kicking in just over 1000rpm (my understanding is 1500rpm or more would be better).

Vac advance is ported, but I can run manifold vac.

Currently no pinging or kick back on hot restart, also pulls well from cruise.

I hope to run more test Friday and Sat. Thanks for the support.

 

[Don Frelier]

Agreed^^^ that's a good sized cam for the low compression, will need more advance at idle..and it's a 78 440

Sorry when I see a picture of that one I immediately associated it with mine.