a sick 93 typhoon

[denny jr.]

i have a 93 typhoon with a blown motor dose anyone know if a stock 4.3l bottomend is the same or are the pistons and crank different?

thanks for any help you can give me.

denny jr

[turbodog]

As long as the block is 4.3l, no balance shaft and came from the
factory with a roller cam, then it is the same as a SyTy block.
Crankshaft is same as generic 4.3, but bearing caps are NOT. You need to re-use your nodular iron caps from your old engine or convert the new block to 4-bolt (splayed) caps. SyTy pistons are also different, but don't go with GM parts there. Get aftermarket pistons (8.35:1, TRW makes the cheapest I'm aware of) and Eagle rods.

Lots more info at:
www.syty.net
www.sytyauthority.net
www.sytyarchives.com

[Blazing Rice]

Do you know what failed on the blown motor?

[denny jr.]

sorry i know its been like 6 months since i been here but the typhoon took out #5 piston