Transmission Lockup
Thread Starter
Senior Member
iTrader: (2)
Joined: Jul 2010
Posts: 500
Likes: 1
From: Shreveport, LA
Car: 1982 SC/1984 Z28
Engine: 305 4BBL/305 4BBL H.O.
Transmission: 700R4/700R4
Axle/Gears: 4th Gen 3.23 Posi/3.73 10 Bolt
Transmission Lockup
I have a 700R4 Transmission. I believe my Rear End to be 3.42. On the Highway at 60 MPH, my engine RPMs are around 3200-3400. I have no ECU, so there is no Lockup Control. Shouldn't my Highway RPMs be higher? Do i need to install a Lockup Control?
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: Transmission Lockup
I would install one. Keeps tranny cooler and more efficient putting engine power to the wheels.
1) assume your tach is slightly off
2) regardless, that sounds about right - I have 3.42 gears and I run about 3000rpm WITH my TC locked, so 32 - 34 sounds about right.
1) assume your tach is slightly off
2) regardless, that sounds about right - I have 3.42 gears and I run about 3000rpm WITH my TC locked, so 32 - 34 sounds about right.
Thread
Thread Starter
Forum
Replies
Last Post
Hotrodboba400
Firebirds for Sale
3
Dec 10, 2019 07:07 PM
Zeek1041
Theoretical and Street Racing
12
Sep 30, 2015 11:00 AM
TX-SleeperC5
Engine/Drivetrain/Suspension Parts for Sale
1
Sep 24, 2015 03:13 PM