engine block

[silverblaz]

ok i know this has been asked a million times before but as we lal know the search works as good as a ford ... any ways i dont know what the difference is between the syty block and a 4.3 block or a vortec block. i know the balance shaft but if you remove the balance shaft is there that much of a difference in the blocks??? what i am getting at is i am putting a syty engine in my blazer now i have everything but the short block so i need to build that next now i used to work at a machine shop so i am just gunna go ask my old boss for a block but i need to know what one i want do i want an older 4.3 blcok a newer balance shaft block ?? i am gunna do a 4 bolt main conversion on it but if you guys could give me some idea what way i should go that would be great thanks

 

[0260IN3]

Re: engine block

ok i know this has been asked a million times before but as we lal know the search works as good as a ford ... any ways i dont know what the difference is between the syty block and a 4.3 block or a vortec block. i know the balance shaft but if you remove the balance shaft is there that much of a difference in the blocks??? what i am getting at is i am putting a syty engine in my blazer now i have everything but the short block so i need to build that next now i used to work at a machine shop so i am just gunna go ask my old boss for a block but i need to know what one i want do i want an older 4.3 blcok a newer balance shaft block ?? i am gunna do a 4 bolt main conversion on it but if you guys could give me some idea what way i should go that would be great thanks

Balance Shaft blocks are weaker by design. The casting is not a thick and therefore are less desirable for a boosted engine. Any non-balance shaft, 1 piece rear seal block will do as there is little or no difference between them. The syty block also have nodular iron main caps which are stronger. If you use a non syty block for anything more than about 250 hp you asking for trouble, unless you have 4 bolt mains.