<VV> best timing setting for a 140/4 with a 280 cam?

[Ray R. (aka Grymm)]

Hey folks, 

Played with my timing yesterday.  This engine has the rear cover (turbo?) with the riveted timing plate that goes up to 21 or 24 or so..  

It's a 140 with most of the "step" machined out of the heads, forged rods and pistons, and a 280 Isky cam.  I can advance the timing all the way to the last mark (looks like 24 but I read the plate should only go up to 20?  Maybe its a custom riveted on plate?) and not get any pinging.

This is a street car but I'm looking for max power without totally killing my gas mileage etc. as I put a lot of miles on it.  Where do you think I should set my timing considering the 280 Cam and the fact that the car is a driver for best performance?

PS- this car also has an ignitor2 and flamethrower coil



Ray "Grymm" Rodriguez III
Lake Ariel, PA
CORSA member
66' Corsa 140/4 coupe
65' Corsa 140/4 coupe (under construction and almost done!)
63' Monza PG coupe (under construction- quickie driver build)