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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Magnimike1 on July 01, 2008, 01:56:07 pm

Title: Flexplate
Post by: Magnimike1 on July 01, 2008, 01:56:07 pm
What size are the flexplates that came on our trucks?  SBC 350
Title: Re: Flexplate
Post by: Captkaos on July 01, 2008, 02:08:30 pm
Flexplate as in automatic: 153 tooth and 168 tooth.
Or are you talking about flywheel = manual?
Title: Re: Flexplate
Post by: Magnimike1 on July 02, 2008, 12:44:39 am
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..
Title: Re: Flexplate
Post by: VileZambonie on July 02, 2008, 06:30:34 am
It depends on the engine's displacement, the trans it's bolting up too and whether or not it's internally balanced.
Title: Re: Flexplate
Post by: Magnimike1 on July 08, 2008, 10:12:48 am
It is a 350.
Title: Re: Flexplate
Post by: Captkaos on July 08, 2008, 10:17:03 am
Are you needing this info to replace a broken one or?
Title: Re: Flexplate
Post by: biodiesel84 on July 08, 2008, 11:13:24 am
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.
Title: Re: Flexplate
Post by: dumbucket1 on July 08, 2008, 11:44:41 am
biodiesel, its 139 teeth and cheap enough to replace at under $50 bucks but buying the part is the easy part  :o
Title: Re: Flexplate
Post by: Blazin on July 08, 2008, 11:50:12 am
I bought a 153 tooth flex plate for my 81 Blazer with a 350 for under $25 at Autozone.
Title: Re: Flexplate
Post by: Magnimike1 on July 08, 2008, 02:26:21 pm
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
Title: Re: Flexplate
Post by: Magnimike1 on July 08, 2008, 02:27:52 pm
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.
Title: Re: Flexplate
Post by: biodiesel84 on July 08, 2008, 07:12:40 pm
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
Title: Re: Flexplate
Post by: Lt.Del on July 08, 2008, 08:20:45 pm
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.  ;D
Title: Re: Flexplate
Post by: ccz145a on July 09, 2008, 07:52:08 am
Quote
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.
Title: Re: Flexplate
Post by: Lt.Del on July 09, 2008, 01:25:56 pm
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.
Title: Re: Flexplate
Post by: biodiesel84 on July 09, 2008, 07:19:20 pm
no distributor cap for me...:D
Title: Re: Flexplate
Post by: Magnimike1 on July 12, 2008, 12:24:24 am
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

anyone????
Title: Re: Flexplate
Post by: dumbucket1 on July 12, 2008, 12:37:07 am
6.75 balancer is the one you need.
Title: Re: Flexplate
Post by: VileZambonie on July 12, 2008, 08:55:21 am
anyone????[/quote]

You need to give some more information. What year is your truck. What year is the engine? Is it a one or two piece rear main seal?
Title: Re: Flexplate
Post by: Magnimike1 on July 14, 2008, 09:39:06 am
anyone????

You need to give some more information. What year is your truck. What year is the engine? Is it a one or two piece rear main seal?
[/quote]

It's a mutt

The engine is a two piece rear seal 350. I haven't bought pullies or anything yet.
Title: Re: Flexplate
Post by: VileZambonie on July 14, 2008, 10:10:40 am
More information on your truck.

Year, tansmission, 4x4 or 2wd?
Title: Re: Flexplate
Post by: Magnimike1 on July 14, 2008, 01:26:35 pm
More information on your truck.

Year, tansmission, 4x4 or 2wd?

nevermind. thanks
Title: Re: Flexplate
Post by: VileZambonie on July 14, 2008, 02:07:20 pm
More information on your truck.

Year, tansmission, 4x4 or 2wd?

nevermind. thanks

You create a thread asking for help and we are offering you help but need you to post your information to give you accurate info. So instead of typing what you have you type nevermind. Please read this

http://forum.73-87chevytrucks.com/smforum/index.php?topic=5220.0
Title: Re: Flexplate
Post by: Magnimike1 on July 15, 2008, 08:45:13 am
More information on your truck.

Year, tansmission, 4x4 or 2wd?

nevermind. thanks

You create a thread asking for help and we are offering you help but need you to post your information to give you accurate info. So instead of typing what you have you type nevermind. Please read this

http://forum.73-87chevytrucks.com/smforum/index.php?topic=5220.0

Excuse me sir!

I got it taken care of. That was the nevermind. Thanks to those who tried to help.