Hi , First you can take the distributor of , and mill a bit out from your advance screw , so you can advance it a bit more , this to compensate for modern petrol .
If you advance it till you hear a slight ping in the exhaust , then retard it a wee bit till it does`t do it anymore .
The original timing fixture doesn`t work anymore with modern fuel .
Another thing is that if you have a British 85HP engine instead of a Canadian 24 stud 95 HP engine , then there is significant power difference , anyway the Chev overhead valve engine is more flexible than the V8 , it likes its higher revs in the hilly roads .
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