what compresion ratio can i run a pinto on
i have a 205 ex injection that will be fitted with twin 40s
i have a miller at work so the machining is no problem but i dont want to over do it

BRISCA F2 Stockcars run with 90 thou off the head. Thats about as much as you can get off without serious pinking probs on 4 star or breaking into the plug holes.

Take much off and you'll struggle with 95RON fuel. But assuming you are going to run Super Unleaded / Genuine 4 star or with an additive then a "fast road" engine would normally have about 40 thou off the std Pinto head.