what year 4.3

[capglass]

I would like to know what years 4.3 that I can put my 4 bbl carb and intake an get good performance out of it. I'm replacing a mid 80's motor I know they covered the manual fuel pump mount but I can go electric. I need to know what year motor I can just bolt on my carb and have it run real good. D I have to stay with like a pre 1992 or will others work good

[1gary]

What I can tell you is the only yr a carbed 4.3 was used in Astro's was 1985 and that block still had the casting for a fuel pump.

Btw-your not telling us what carb you have and what manifold.

As I think about this more,any efi heads with a 12 bolt manifold should bolt on.The CFI's I think are 8 bolt style which started in Astro's in 1993.The thing is it matters where the 4.3 comes from because it is different depending on which you used as a donor.The example would be ending a certain style of heads 4.3's in Astro's is not the same as the ending of the heads same style in pick-up trucks.Yeah-GM at it's finest.