Flexplate

[Magnimike1]

What size are the flexplates that came on our trucks?  SBC 350

[Captkaos]

Flexplate as in automatic: 153 tooth and 168 tooth.
Or are you talking about flywheel = manual?

[Magnimike1]

Yes I meant flexplate as in automatic.  I know some don't know the difference... I knew there were two as in 153 and 168, but what came stock?  Did it vary? Turbo 350 trans, stock replacement starter..

[VileZambonie]

It depends on the engine's displacement, the trans it's bolting up too and whether or not it's internally balanced.

[Magnimike1]

It is a 350.

[Captkaos]

Are you needing this info to replace a broken one or?

[biodiesel84]

I also need to do this to mine, it's missing some teeth...but I have a 6.2 diesel and a 700r4...anyone know which one mine came with...thanks

Chuck.

[dumbucket1]

biodiesel, its 139 teeth and cheap enough to replace at under $50 bucks but buying the part is the easy part 

[Blazin]

I bought a 153 tooth flex plate for my 81 Blazer with a 350 for under $25 at Autozone.

[Magnimike1]

I bought a 153 tooth flex plate for my 81 Blazer with a 350 for under $25 at Autozone.

Thanks,

Also, what direction do I need to go with a balancer?  6 3/4 or 8". FOR a 350 not 400

[Magnimike1]

Are you needing this info to replace a broken one or?

Bought the truck as a roller.  Piecing together everything I need to install my longblock.  Brackets, pullies, balancer, flexplate etc.

[biodiesel84]

hard?  isn't it as easy as sliding the tranny back and then unbolting it and then unbolting the tq converter...or am I missing something...never changed one before...

Chuck

[Lt.Del]

lining up a 300 lb tranny is loads of fun---and those pesky little bolts, you know, the two at the top of the tranny that the firewall likes to get in the way of. fun. 

[ccz145a]

those pesky little bolts, you know, the two at the top of the tranny

With the bottom bolts started, you can let the engine/trans down (don't crack the dist cap) and use a long extension and swivle to run in the bolts, then raise it back up and torque them down.

[Lt.Del]

good point.  if not, it is the good ole box wrench while you sit on the engine. slowly, 1/8th of a turn at a time.