Budman68

Will it fit the new 700R4 convertor?

page62

Yes. But the bolts may be different. (At least they were on my 200-4R.) Make sure you use the bolts that come with the converter!

Budman68

I guess I will be buy new bolts this weekend. What size is the flywheel?

page62

Don't know about the flywhell. Same old thing Chevy used for decades.

The bolts may or may not be metric. I'm not sure. But it's critical they're the right size or they can damage the lockup clutch. Get them from whomever sold you the converter.

Budman68

Junkyard a year or two ago. I guess I will have to go to the convertor store tomorrow.

MRZ28HO

The flywheel is a 153. :)

page62

Have you had the tranny rebuilt? The 700R4 has some inherent weaknesses that should be addressed before you put that thing in there. A decent tranny shop should be able to do the job at a reasonable cost.

Also, have you installed a Painless Wiring lockup adapter kit? (Part of it actually goes inside the tranny.)

Budman68

It's a newer 700R4 that I had rebuilt. I replaced all the broken stuff and added Corvette servo, no kickdown valve, and shift kit. My computer will cover the lockup. Convertor is a 200R4 version converted to 30 spline and 3000 stall.

page62

Sounds good! I've heard stories of junkyard 700R4's heading south real quick, but you have all the bases covered.

By the way, the OEM-type 200-4R converter uses metric flywheel attachment bolts.

Budman68

Thanks :cheers:

Fevre

Slap me if this sounds nitpicky but you need a flexplate, not a flywheel. Flywheels are used on manuals while a flexlate is used on autos. Can't answer your question but did not want you to order a flywheel but make sure you get the one for your particular balancing, int or ext.


[Modified by Fevre, 11:19 AM 1/30/2003]

Budman68

OK flexplate. :smash:
here is the scoop.
168 measures 14.1"
153 mesaures 12.8"

mrvette

UHHH...pardon old dummy GENE here, but it seems to me a chebby V8 SB or BB virtually HAS to have the same sized flywheel in all installs....and if the tranny bellhousing is large enough to even fit the 'standard' pattern, the flywheels/flexplates have to be the same size or the converters and starters would NEVER line up...??? no??? where/how/what configuration of starter could ever possible fit on a V8 block and engage a flywheel that is ONE INCH in RADIUS smaller diameter??? gotta be some kind of weird looking oddball starter I never seen....now keep in mind here I"m an old Pontiac guy really, and n fact have had very few SB chebby's much less never a BB chebby....
and the flexplates are about all the same size, as is the bellhousing....and the torque converters....

I can see that small V6 thingy taking a smaller flexplate at ~12 inches or so...smaller bellhousing too,.....but on a GM V8....they damn close to all the same size....and have been for decades....

I understand the metric BS, and all....well so what, that's just a bolt size...nothing to do with the 'standard' machining going on so bellhousing fit a variety of engines....Yeh. I know about the GM thing and the Chebby patterns....

I do know a 700r4 will not line up to a 350-400 pattern on the torqwue converter bolts....so I drilled new holes....big freaking deal....

GENE

PatsLs1vette

Gene,there are 2 different flexplates available and several starter noses also,2 long bolts ,1 short 1 long ,staggered,cast iron,aluminum,most flexplates had several holes drilled in them to accommadate different torque convertors also,im using the 700r4 convertor on my 73 flexplate it has 2 different sets of mounting holes.the 305 327 307 sometimes used the smaller flexplate also the 283's.I built starters and alternators for 5 year or so and icve seen all kinds of noses come in,ive even seen them a hair shorter so it brings the gear closer to the teeth.

mrvette

hehe....seems strange, but just show to go me....

oh well.....

here I thought GM had their act together....

untill the next young kid gets' hired....

GENE