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Redog · 05-28-2007, 05:06 PM

395558 block of the 350 is the best. These were made from 1968 to 1976. Up to about 73 to 74 they had soild mains. The 403 and all 350's in the mid 70's and up had windowed mains.

The newer 350's and all the 403 aren't made of mush, but the older ones are stronger. From 1968 to 1971, the 350's were rockets motors, so they had more power and more toqure, but they usually run on leaded gas. After '72, most of them were unleaded motors

All the SBO's are externally the same.

If your looking for a daily driver, whatever floats your boat, but to build one up for street and strip use, you want an older one. I've heard the 350 block is overall better than the 403

05-28-2007, 05:06 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 831	395558 block of the 350 is the best. These were made from 1968 to 1976. Up to about 73 to 74 they had soild mains. The 403 and all 350's in the mid 70's and up had windowed mains. The newer 350's and all the 403 aren't made of mush, but the older ones are stronger. From 1968 to 1971, the 350's were rockets motors, so they had more power and more toqure, but they usually run on leaded gas. After '72, most of them were unleaded motors All the SBO's are externally the same. If your looking for a daily driver, whatever floats your boat, but to build one up for street and strip use, you want an older one. I've heard the 350 block is overall better than the 403 __________________ Me 2000 Alero running 14's 2005 Nissan Altima (her's) 1985 Delta 88 w/1968 350 rocket ( MURDERED )