Re: Gmc V12 in trucks
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spark advance wasn't necessary, so if you find on the distributors the advance may be locked, rusted, or disabled, in one position, that is the reason. It was tuned at the operating rpm it normally ran. |
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 |
Re: Gmc V12 in trucks
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Re: Gmc V12 in trucks
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