Block Question

[Rawpwr7]

Are all 93-older 4.3 blocks the same as SY/TY blocks?

A friend of mine has an 86 blazer and he is going to part it out. He is going to give me the engine. Would I be able to use the block and maybe the crank for an engine build? :rock:

If not what year blocks will work??

 

[dgoodhue]

The 86 aren't hydraulic roller blocks, so its a lot easier to use 88 and newer block.

 

[sytyguy]

Dave's right....most people tend to go with the roller block for the improved lifter design, but don't junk the '86 block just yet.....it does have it's benefits (financially).

PROS
-------
- Has the 1 pc rear main seal.
- Cheaper lifters (1/2 cost due to less efficient flat tappet design).
- Cheaper camshaft (1/2 cost due to less hardened cam stock).
- Decent cam selection (Comp 18-124-4 - 218 dur/454 lift).

HTHs

Hood