Join Date: Sep 2002
Location: Greensboro, NC, USA
I hope it is okay to post here and in the performance section. If it is not, please tell me and I won't do it again.
Anyway, I have a 406 small block with moderately high compression (10:1) and a crower cam, part # 00243, specs are all listed at the end of the email.
My problem is in setting timing. It seems my car likes alot of initial timing - around 19*. With this, my total advance is around 35* (vacuum not attached). I am still messing with how much and what kind of vacuum advance to run. I have an adjustable cannister, so I am leaning toward using a little, say <5*, manifold vacuum. My concern is seeing all the posts that recommend initial timing of roughly 12* advance, total of 34-38*. If I set my initial at 12*, my total, using my adjustable timing light, is around 25* WOT. I certainly don't want any pinging, but 25*? This seems a bit small. I realize that the 12* was for stock applications, so I'd like some advice from those wiser than myself -not terribly difficult- as to a rough idea of what my timing should be. Feel free to recommend anything.
Specs for cam are:
Grind Lobe Center: 284HDP 112*
Advertised Duration: Intake - 286*, Exhaust - 289*
Duration @ .050": Intake 225*, Exhaust - 230*
Gross Lift 1.5/1.5: Intake - .454", Exhaust - .463"
I have an Accel HEI ignition. Currently, I am running an Edelbrock Performer 600CFM carb -I know its too small, but I drive my car everyday, it helps on gas. I have an 350 Auto transmission, with a B&M Holeshot 2000 converter, thinking of upping to 2400.
I appreciate any advice you can give.
As always, thanks and God bless.
67 406ci named "Gideon"