Flywheel help

[oneluckypops]

Will a Flywheel from a 79 350 fit and work on a 96 vortec 350? Oreillys shows different part numbers for the 2 trucks So iwould assume that they wont interchange but if anyone knows for sure would appreciate it.

 

[Irishman999]

I am going to say no, in 1986 (I think) they switched over to a one piece rear main seal. The older motor will have a 2 piece and they require different flywheels.

 

[oneluckypops]

yea it was either 86 or 87 when the went with the 1 piece rear main seal but I wasnt aware that the flywheels were also changed. Thanks that sucks balls there goes another 75 bucks lol

 

[Irishman999]

yea it was either 86 or 87 when the went with the 1 piece rear main seal but I wasnt aware that the flywheels were also changed. Thanks that sucks balls there goes another 75 bucks lol

Ya know, im not even even sure of the difference. Im talking about manual flywheels, if you have a flexplate maybe it will transfer over.... Grey area there.

 

[bucket]

The '86-up motors have the one-piece crank seal and the flange is a different size because of it. The newer flywheels also have a balance weight on them.

 

[85k10383]

Yep, what he said^^ The newer motors flexplate has a smaller diameter hole for the crankshaft. Found that one out the hard way myself.