3 Litre Twin Carb? Sept 25, 2021 10:34:42 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by tonys on Sept 25, 2021 10:34:42 GMT I'm happy to be corrected but the bore is different on the earlier 2638cc(ie 105s) 6-cyl engines and the later 2625cc 6-cyl P4 and 3-litre P5 engines.