Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette Sponsored by
VBP

Reply
 
 
 
 
Thread Tools Search this Thread
Old 10-10-2012, 06:59 PM   #21
johnt365
CF Senior Member
 
johnt365's Avatar
 
Member Since: Dec 2004
Location: Austin Texas
Default

To each his own. However, if you believe anything CHP says, here is a article for ya. http://www.chevyhiperformance.com/te...o_calculating/

Basically the theory is that you want your first gear final drive ratio to be as close to 10:1 as possible for performance.

3.08 with 2004R = 8.43
3.08 with 700R4 = 9.42

2004R with 3.55 = 9.72
2004R with 3.73 = 10.22

All depends on what you want. I have yet to install this transmission behind my 3.55 gears to give a real world analysis.
johnt365 is offline   Reply With Quote
Old 10-10-2012, 08:40 PM   #22
oldalaskaman
CF Senior Member
 
oldalaskaman's Avatar
 
Member Since: Aug 2010
Default

Quote:
Originally Posted by manofsteel1 View Post
Are we all saying that the 200R4 tranny is not good with the stock 3:08 rear in the vette with stock 350. Why?
it will work fine, you get a longer 1st to 2nd shift time, instead of shifting before you get across the intersection like it would be with the 700r4, you get across the intersection and just a bit beyond, depending on how far you stick your foot init, you can also adjust it, pretty much like my 350 did, hope this helps
oldalaskaman is offline   Reply With Quote
Old 10-11-2012, 01:04 PM   #23
chevymans 77
CF Senior Member
St. Jude Donor '05-'06-'11,'13-'14
 
chevymans 77's Avatar
 
Member Since: May 2002
Location: Sulphur LA
Default

Quote:
Originally Posted by manofsteel1 View Post
Are we all saying that the 200R4 tranny is not good with the stock 3:08 rear in the vette with stock 350. Why?
the 200 has basically the same gears as the TH350 except with OD.

the 700 will give a better off the line time than the 200 with a low ratio rear

the 200 will work but the 700 will give better off the line performance

Neal
chevymans 77 is offline   Reply With Quote
Old 10-11-2012, 01:10 PM   #24
oldalaskaman
CF Senior Member
 
oldalaskaman's Avatar
 
Member Since: Aug 2010
Default

700r4 is more spendier to swap
oldalaskaman is offline   Reply With Quote
Old 10-11-2012, 02:08 PM   #25
johnt365
CF Senior Member
 
johnt365's Avatar
 
Member Since: Dec 2004
Location: Austin Texas
Default

Here are the actual ratios for the transmissions. 700 has a lower first but a wider gap also. 200 has better spacing, slightly lower first than non od trans and a little higher od than the 700.

Turbo 350 2.52 1.52 1.00 - -
Turbo 400 2.48 1.48 1.00 - -
200-R4 2.74 1.57 1.00 0.67 -
700-R4 3.06 1.62 1.00 0.70 -
johnt365 is offline   Reply With Quote
Old 10-11-2012, 05:34 PM   #26
chevymans 77
CF Senior Member
St. Jude Donor '05-'06-'11,'13-'14
 
chevymans 77's Avatar
 
Member Since: May 2002
Location: Sulphur LA
Default

I just installed a 200 in mine and must say its a good bit better for driving around both town and hwy than the TH350 I had.

I have 4:11's in the rear so I stayed away form the 700 plus the 200 was a drop in vrs the 700 needing drive shaft mods.

The 700's are a little easier to come by but the 200 is a better fit for the C3.

Plus the 200 has a lower OD gear

Neal
chevymans 77 is offline   Reply With Quote
Old 10-11-2012, 06:49 PM   #27
texas jim
CF Senior Member
 
texas jim's Avatar
 
Member Since: Oct 2003
Location: Killeen Texas
Default

Questions PLEASE:

Are you guys saying that these 2004R trannys are good/strong enough to use in their stock form in back of a 350ci engine?


"vette400, are you saying that you are using a "stock" 2004R behind your 400 small block?

In a CarCraft article, about the 2004R trans. done by "Calif. Performance Transmissions," CPT, they say that the 2004R trannys w/ the Valve Body Casting Numbers ending in 7 thru 12 are best suited f/ performance use. Does anyone know why that is?

Thanks in advance f/ the info. Also, this is a great post as along w/ the info you guys are giving, the articles you guys posted are great also. Thanks again.

The two articles i have about the 2004R tranny are from Car Craft magazine, April, 2005 & Classic Trucks, December, 2005.

Last edited by texas jim; 10-11-2012 at 06:53 PM.
texas jim is offline   Reply With Quote
Old 10-11-2012, 06:56 PM   #28
oldalaskaman
CF Senior Member
 
oldalaskaman's Avatar
 
Member Since: Aug 2010
Default

Quote:
Originally Posted by texas jim View Post
Questions PLEASE:

Are you guys saying that these 2004R trannys are good/strong enough to use in their stock form in back of a 350ci engine?

yes if the engine is stock


"vette400, are you saying that you are using a "stock" 2004R behind your 400 small block?

In a CarCraft article, about the 2004R trans. done by "Calif. Performance Transmissions," CPT, they say that the 2004R trannys w/ the Valve Body Casting Numbers ending in 7 thru 12 are best suited f/ performance use. Does anyone know why that is?

they were installed in GNX and other performance inspired cars

Thanks in advance f/ the info. Also, this is a great post as along w/ the info you guys are giving, the articles you guys posted are great also. Thanks again.

The two articles i have about the 2004R tranny are from Car Craft magazine, April, 2005 & Classic Trucks, December, 2005.
oldalaskaman is offline   Reply With Quote
Old 10-11-2012, 07:01 PM   #29
texas jim
CF Senior Member
 
texas jim's Avatar
 
Member Since: Oct 2003
Location: Killeen Texas
Default

Thanks, oldalaskaman.

Please, The rest of the questions... Thanks again.
texas jim is offline   Reply With Quote
Old 10-11-2012, 09:39 PM   #30
oldalaskaman
CF Senior Member
 
oldalaskaman's Avatar
 
Member Since: Aug 2010
Default

had I not found a built 200r4 for an excellent price, I would have looked , and did look , for a stock take out and ran it in my C3, based on posts on other forums,( Buick GNX, Hurst olds and others) and would've been able to give a first hand account. I'm basing my info on what I've read on the internet, and we all know no one fibs or makes things up online. I think a stock 2004r that was behind another V8 would work fine and would not have hesitated to install it
oldalaskaman is offline   Reply With Quote
Old 10-11-2012, 10:00 PM   #31
chevymans 77
CF Senior Member
St. Jude Donor '05-'06-'11,'13-'14
 
chevymans 77's Avatar
 
Member Since: May 2002
Location: Sulphur LA
Default

from what I've read the main differences in the valve bodies listed are a higher shift point and the trans will shift into OD at full throttle.

I had this upgrade done to mine, they added the GN valve body mainly for the higher shift points and to make the trans go into OD at full throttle.

with the normal governor it will shift at 5800 rpm and with the GN governor it will shift at 6200 rpm if left in drive. these shift points can be raised by 300 to 500 rpm by putting it in low (1st) and leave it there, it will shift out on its own if left in low.

this is what I was told by the shop that built mine.

Neal
chevymans 77 is offline   Reply With Quote
Old 10-11-2012, 10:00 PM
 
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Reload this Page Finally found a 2004R $145
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
2014 Subaru Forester Detail (multiple Rayviews) Autogeek.net Car Care Discussion 1 12-13-2013 10:47 AM
TH400 to 200-4R conversion with pictures. johnt365 C3 Tech/Performance 45 11-26-2013 09:29 AM
FS: 1999 Coupe F45, 196k miles, $9.5k, 6 spd, [FL] ISUCorvette4Life C5 Corvettes for Sale 0 11-19-2013 12:41 PM
F/S - 2001 C5 Magnetic Red Conv - < 29K mi / 1 Owner / Reno, NV Pirate048 C5 Corvettes for Sale 2 08-28-2013 08:08 PM
Question about "Homelink" and garage-door openers Red Racer C6 Corvette General Discussion 15 04-16-2012 11:51 AM


Tags
200, 2004, 400, 4r, austin, block, corvette, lock, oring, small, stock, th200r4, tx


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
 

All times are GMT -4. The time now is 09:26 PM.


Emails & Password Backup