▁and ▁ ▁of ▁tor que , ▁Mike ▁Hall ' s ▁intention ▁was ▁to ▁design ▁the ▁cyl inder ▁heads ▁so ▁that ▁ 3 ▁spark ▁pl ugs ▁per ▁cyl inder ▁could ▁be ▁fitted ▁but ▁this ▁idea ▁was ▁dropped ▁since ▁there ▁wasn ' t ▁any ▁appreci atable ▁increase ▁in ▁power ▁or ▁tor que , ▁the ▁original ▁objective ▁was ▁an ▁engine ▁with ▁a ▁minimum ▁of ▁, ▁this ▁objective ▁was ▁exceed ed ▁with ▁the ▁engine ▁making ▁ ▁in ▁the ▁first ▁test ▁run . ▁This ▁engine ▁was ▁used ▁in ▁the ▁racing ▁version ▁of ▁the ▁Cap ri ▁R S ▁ 3 1 0 0 , ▁compet ing ▁successfully ▁in ▁the ▁European ▁Tour ing ▁Car ▁Championship , ▁as ▁well ▁as ▁in ▁Formula ▁ 5 0 0 0 ▁single - se aters . ▁ 1 0 0 ▁k its ▁were ▁also ▁sold ▁by ▁Ford ▁Mot ors port . ▁ ▁. ▁ ▁Ford ▁R S ▁De al ers hips ▁also ▁offered ▁a ▁number ▁of ▁performance ▁modifications ▁for ▁the ▁Es sex ▁V 6 ▁called ▁the ▁GP 1 ▁( Group ▁ 1 ) ▁and ▁Series ▁X , ▁the ▁GP 1 ▁package ▁offered ▁a ▁ 4 0 ▁D FI 5 ▁We ber ▁Car b ure tor , ▁a ▁cam sh aft ▁k it , ▁larger ▁ ▁in let ▁and ▁ ▁exhaust ▁val ves , ▁double ▁val ve ▁spr ings , ▁" spe cially ▁selected " ▁connecting ▁ro ds ▁and ▁for ged ▁high ▁compression ▁p ist ons ▁giving ▁a ▁power ▁output ▁of ▁around ▁, ▁the ▁Series ▁X ▁modifications ▁offered ▁the ▁same ▁larger ▁in let ▁and ▁exhaust ▁val