Re: Gmc V12 in trucks
Gentlemen, I believe the conrods of 351 will swap w/ 702 (never bothered), you may find 351's are Arma cast iron and 702's are forged steel. Some think 702s are configured as 2-351 V6s. I believe they are 2 inline 6 cyls . Each bank timed and tuned separately, then combined. Have built many V 12s including Lincoln, Packard and many today obscure makes. Many stagger each inline bank from the other a few block angle degrees to reduce harmonics. That necessitates separate bank tuning.
Synchronizing carbs can be done accurately w/ exh analyzers.
Fuel mileage is one -two mpg they tell me. JMHO David
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