Over Drive Trans or Manual? - Team Camaro Tech
Transmission & Driveline Transmissions and Differentials

 6Likes
  • 2 Post By Vega
  • 1 Post By Lonnie P
  • 1 Post By Mkelcy
  • 1 Post By Larger Dave
  • 1 Post By SoCal805
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old Oct 19th, 19, 07:19 AM Thread Starter
Tech Team
 
Join Date: Jun 2019
Posts: 38
Over Drive Trans or Manual?

Hi..... thinking about swapping out my th400 for either an overdrive or manual. (550hp motor) Which of the two is the most cost efficient?

If Auto Overdrive...... which is the best bang for the buck?

If Manual...... same question?

Thx
Camarocarter is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old Oct 19th, 19, 07:29 AM
Moderator
John
 
Vega$69's Avatar
 
Join Date: Sep 2010
Location: Vegas NV/Wesley Chapel FL
Posts: 12,530
Garage
Re: Over Drive Trans or Manual?

Manual TKO600

I don't do Autos
big gear head and DT like this.

66 Chevelle Protour LS3/525(SOLD AT Mecum 2018)
69 SS396 Cortez Silver(SOLD)
69 Z28(Sold)
69 Pro Tour - LS3/T56
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(SOLD)
69 Pro Tour - LS7/T56 (SOLD)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

69 Z28/RS Tribute355/5 Speed (SOLD)
69 RS Clone 427/TH400 (SOLD)
67 RSZZ502/5 Speed (SOLD)
69 Camaro 406 SBC/TH400 (SOLD)
Vega$69 is offline  
post #3 of 8 (permalink) Old Oct 19th, 19, 09:12 AM
Senior Tech
Lonnie
 
Lonnie P's Avatar
 
Join Date: Sep 2008
Location: Pittsburgh, pa
Posts: 585
Re: Over Drive Trans or Manual?

Since your car is already an auto, stay auto.

The 4L80E would be a natural. Same 1-3 gear ratios plus lockup converter & 25% overdrive.

Once you factor in the cost of clutch, pressure plate, pedals, shifter etc, the auto will typically be more cost effective.
yellow69RS likes this.
Lonnie P is offline  
 
post #4 of 8 (permalink) Old Oct 19th, 19, 10:13 AM
Gold Lifetime Member
Mike
 
Join Date: Apr 2002
Location: Walla Walla, WA
Posts: 4,293
Re: Over Drive Trans or Manual?

What would make the car better for you? Buy once, cry once.
yellow69RS likes this.

Mike - '68 Camaro with lots of stuff done to it.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mkelcy is offline  
post #5 of 8 (permalink) Old Oct 19th, 19, 10:34 AM
Senior Tech
Dave
 
Join Date: Dec 2005
Location: Tampa, Florida
Posts: 4,672
Re: Over Drive Trans or Manual?

In my opinion there are only two reasons to use an automatic transmission. You never learned to shift or you are drag racing. First is obvious, but not so with the the torque multiplication obtained from the fluid coupling in the "Torque Converter".

This is why almost every amateur racer from a Top Alcohol dragster/FC to Super Comp, Super Gas, and Super Street uses an auto. Same for all the way down the Sporstman ranks, until you get to Comp, Super Stock, and Stock where there is an "A added to those cars with an auto versus the manual added to the class lettering visible to the tower for indexing purposes.

Torque is what accelerates a car not horsepower so the more tire shreding torque you have the harder you launch (assumes you have the tire to hold the power and the suspension set-up to get the power to the ground).

If you are not using a trans brake then an auto also helps cushion the shock of the launch (for better sixty foot times).

Have you considered adding a Gear Vendor auxilary trans bolted to the back of your TH400? Much easier to fit into your car than a a 4L80e.

I do favor the 4L80e because the "e" means you can not only program it to behave like you want it to, but you can add a simple switch to the dash that is like setting a phaser from stun to vaporize. On kill setting it will put you in the back seat on each up shift if you are not belted in. I also recommend retaining a lock-up converter for the street. The lock-up function is like a fifth gear as it removes most of the power loss associated with a torque converter. Down side is if you make gobs of torque with a BBC you can rip the friction lining off the clutch surface (I've done it three times now but it was fixed twice under product warranty).

Big Dave
Everett#2390 likes this.
Larger Dave is offline  
post #6 of 8 (permalink) Old Oct 19th, 19, 10:48 AM
Senior Tech
 
Join Date: Nov 2018
Posts: 920
Re: Over Drive Trans or Manual?

OP

Adding a Gear Vender OD to your 400 would be a option...likely the most plug & play
Just 1 More likes this.
SoCal805 is offline  
post #7 of 8 (permalink) Old Oct 20th, 19, 09:06 PM
Senior Tech
Michael
 
Join Date: Apr 2010
Location: Lutz, FL
Posts: 1,918
Re: Over Drive Trans or Manual?

Or a M20 and 3.08 for some stick shift fun.
mahunt is offline  
post #8 of 8 (permalink) Old Oct 21st, 19, 09:24 AM
Super Moderator
Bess-68's rule
 
Everett#2390's Avatar
 
Join Date: Sep 2000
Location: Va Beach VA
Posts: 31,715
Garage
Re: Over Drive Trans or Manual?

Good advice given by Dave - TORQUE is what pegs the 'Seat-O-Pants meter'.
My suggestion - leave the THM400 as is and swap out a looser T/C, say 3500 RPM.
Believe me, you're not driving this Camaro for MPG, and they weren't intended to be sippers.
If you want a sipper, get a Prius/Civic and sell the Camaro.

Give a man a rescued dog for the health of both their souls. May 2017 ROTM Winner - Thank you!
'
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
CUBS - 2016 World Series Champions - Thank you, Joe Madden enjoy your next chapter.
Everett#2390 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome