1991 Chevrolet S-10 Blazer Consumer Discussions

1986 s10 blazer engine swap

• 4.3L engines

  Written by: duntov on Apr 15, 2010 2:51:58 PM

  A 1987 - 1991 S10 Blazer will have a 4.3L engine with a one-piece rear seal and is designed for a roller tappet cam. If you rebuld the engine use the same crankshaft and rods that originally came in the engine. Those engines do not have a crank sensor and they can use the more common parts for a 350 Chevrolet V8 engine. Maximum over bore is .030" oversize (4.030" bore) ... Read More