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a sick 93 typhoon

denny jr.
03-13-2004, 07:02 PM
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

05-21-2004, 09:52 AM
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:

Blazing Rice
06-16-2004, 04:01 PM
Do you know what failed on the blown motor?

denny jr.
02-01-2005, 01:53 AM
sorry i know its been like 6 months since i been here but the typhoon took out #5 piston

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