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just think as a amateur by comparison the info above is not quite right,no offence meant but the 701 L block was the escort 72mm stroke and not to be confused with the later 711m x/flow item used to build the long stroke 77mm stroke twin cams with the spacer block.i also had a 701 bottom end with a old cosworth 12 bolt steel crank and rods.it had a x/flow top end and gear driven cam. holbay short stroke race engine.
i need some help as i am restoring a 1970 broadspeed escort twin cam that had a BRM engine.i have the bare bones of the engine that needs a lot of work but are there any defining numbers or marks to show if the heads the real deal.the blocks a 125e [i think] with some numbers ground off. GAFF steel crank and rods,but i think these were added later.
thanks guys.
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