need building specs for 605 bbf

im wanting to build a 605 bbf and i need to find out stroke and rod length that i need and can i use the a-460 block or do i need an eliminator block any help would be appriciated thx

brunswick wrote:im wanting to build a 605 bbf and i need to find out stroke and rod length that i need and can i use the a-460 block or do i need an eliminator block any help would be appriciated thx

A 604.81" engine is 4.625" bore x 4.500" stroke.

A 604.79" engine is 4.562" bore x 4.625" stroke.

look in the proven builds,you'll find some good info...... 4.625 bore 4.5 stroke,eliminator block and bryant crank.

4.5 bore 4.75 stoke will do it too. The cheapest by far is with the 4.625 bore and 4.5 stroke. A 598 with the 4.6 bore and 4.5 stroke will leave some material in the bore for future clean up honing or boring though and would be a good choice if using a new block. Most blocks are at their max with the 4.625 bore, and ring packages become more difficult to find and very expensive past that bore size.

schmitty wrote:4.5 bore 4.75 stoke will do it too. The cheapest by far is with the 4.625 bore and 4.5 stroke. A 598 with the 4.6 bore and 4.5 stroke will leave some material in the bore for future clean up honing or boring though and would be a good choice if using a new block. Most blocks are at their max with the 4.625 bore, and ring packages become more difficult to find and very expensive past that bore size.

A big X2

You can use either block. The 4.600" X 4.500" = 598 CID is one of the most common engines out there, and is very user friendly.

Charlie