The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-07-2007, 11:49 PM   #1
ThatOneBlue67
I survived Dead Man's Curve.
 
ThatOneBlue67's Avatar
 
Join Date: Apr 2006
Location: The Nine-Five-687
Posts: 389
Question 700R4 flywheel

OK, so I've been riding around with my new 700R4 transmission. Its adjusted properly and everything works fine. It down shifts when I floor it, so apparently it has the ability to downshift a lot

I posted a couple days ago, saying that I was disappointed with my top speed and that got me thinking about the flywheel. My old man read somewhere that 700R4's use a different flywheel from... well, everything else. The flywheel I'm using, though, is from my TH350 and it bolted right up. No problemo. I DID get a chance to look at a 700R4 flywheel that was on a Camaro, and it was significantly smaller as far as diameter is concerned.

So, could the size of the diameter of a flywheel affect speed? Are you really supposed to use a certain flywheel for the 700R4?

I used my old flywheel, because I didn't think the starter would make contact with the smaller, Camaro flywheel. I'm starting to wonder if that flywheel came off of a V6 or something. Anybody know much about Camaros, V6's, and 700R4 flywheels?
__________________
"The people should not be afraid of their government. The government should be afraid of it's people."

"The Hurricane"
1967 Chevrolet C10
350 Eight Cylinder, 700R4 BowtieOverdrive




Cherry Bomb... Disturbing the Peace Since 1968.
ThatOneBlue67 is offline   Reply With Quote
Old 04-07-2007, 11:59 PM   #2
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
Re: 700R4 flywheel

if the converter bolts up, and the stater hits it only when needed, and you have no vibration problem, then you're OK... it'll do nothing to the top speed at all.
Longhorn Man is offline   Reply With Quote
Old 04-08-2007, 11:13 AM   #3
herb101
Used Register
 
herb101's Avatar
 
Join Date: May 2005
Location: Live Oak, TX
Posts: 379
Re: 700R4 flywheel

How does your top speed compare to the old trans when you stay out of the OD? The .7 OD may be removing the required torque it took to get the ol' sheet steel cinderblock to cut through the air at top speed. You ARE losing 30% of your torque when in overdrive.

Flywheel can only affect the acceleration of your motor, but top speed will be at a consistant engine RPM.

Herb
herb101 is offline   Reply With Quote
Old 04-08-2007, 11:20 AM   #4
Tx Firefighter
Watch out for your cornhole !
 
Tx Firefighter's Avatar
 
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
Re: 700R4 flywheel

Flywheel doesn't make any difference. I'd bet that your speedometer is reading wrong due to not having the right speedo gear set in your 700 for the tires and rear end ratio of your truck.
__________________
I'm on the Instagram- @Gearhead_Kevin
Tx Firefighter is offline   Reply With Quote
Old 04-08-2007, 10:31 PM   #5
ThatOneBlue67
I survived Dead Man's Curve.
 
ThatOneBlue67's Avatar
 
Join Date: Apr 2006
Location: The Nine-Five-687
Posts: 389
Re: 700R4 flywheel

My speedo doesn't work at all, because there is no "drive gear" located inside of the transmission to send the signal. I was having someone clock me with their speedo (which is set correctly).

Come to think of it, I never wired up a switch to kill the OD for when I did not want it on. Maybe that is my problem.
__________________
"The people should not be afraid of their government. The government should be afraid of it's people."

"The Hurricane"
1967 Chevrolet C10
350 Eight Cylinder, 700R4 BowtieOverdrive




Cherry Bomb... Disturbing the Peace Since 1968.
ThatOneBlue67 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:34 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com