going from a 3600 to 4500-5000 stall

1 Bad Duster said

Its a Victor 340 intake 750 aed carb i do think it needs bigger jets. because it does have a very slight stumble at the start its not that bad.I have never had a timing light on the car... I know the sunday after I ran it I changed the plugs and 7 out of the 8 was the same color and 1 was a different color. 7 of them where a brownish color and 1 was a blackish color

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While they all interact to a point, focus on these carb mods. It may take while and lots of changes to get it good:

* Jet for MPH.
* Accellerator pump squirters for 60'.
* Accellerator pump squirters and pump cams for 330".

Plan on a roll bar & especially frame connectors if you don't have them yet. Higher stall/flash should help especially since I always felt that a Victor was a bit much for most applications. I prefer a Holley Strip Dominator. 4 hole spacer may help with tuning.