'77. TH350 and stick shift frames different?
Thread Starter
Instructor
Joined: Apr 2011
Posts: 161
Likes: 17
From: NW CT
'77. TH350 and stick shift frames different?
Hello all.
I am working on a '77e that came with a l48/TH350. A year or 2 ago I picked up a great '76 frame from a member here who had to give up on his project. It is a stick shift frame. I installed the American Powertrain flanges to make the Crossmember removable.
Well today I layed the motor/trans in and the trans mount is a few inches BACK from where it needs to be for the TH350. I can find dimensions on the auto's just fine but can't seem to find them on the T10 4speed to see how much different.
My theory is the T10 puts the mount where it needs to be for a TH400 and all I have to do is get a TH400. My worry is that the stickshift cars put their mounts at a location that doesn't match up at all with autos.
So do TH400's and T10's swap with out moving the trans mount location?
I am working on a '77e that came with a l48/TH350. A year or 2 ago I picked up a great '76 frame from a member here who had to give up on his project. It is a stick shift frame. I installed the American Powertrain flanges to make the Crossmember removable.
Well today I layed the motor/trans in and the trans mount is a few inches BACK from where it needs to be for the TH350. I can find dimensions on the auto's just fine but can't seem to find them on the T10 4speed to see how much different.
My theory is the T10 puts the mount where it needs to be for a TH400 and all I have to do is get a TH400. My worry is that the stickshift cars put their mounts at a location that doesn't match up at all with autos.
So do TH400's and T10's swap with out moving the trans mount location?
Last edited by ConnecticutJunkman; Jul 20, 2018 at 11:36 PM.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
interesting.....why not tap the frame and move it to where you need it to be?
I had a 77 and swapped the th350 for a 700r4 and used the bow tie over drive cross member, I don't see why you cant just move the cross member or the trans mount assuming you have welding capabilites
I had a 77 and swapped the th350 for a 700r4 and used the bow tie over drive cross member, I don't see why you cant just move the cross member or the trans mount assuming you have welding capabilites
Thread Starter
Instructor
Joined: Apr 2011
Posts: 161
Likes: 17
From: NW CT
interesting.....why not tap the frame and move it to where you need it to be?
I had a 77 and swapped the th350 for a 700r4 and used the bow tie over drive cross member, I don't see why you cant just move the cross member or the trans mount assuming you have welding capabilites
I had a 77 and swapped the th350 for a 700r4 and used the bow tie over drive cross member, I don't see why you cant just move the cross member or the trans mount assuming you have welding capabilites
I have to get another TH350 anyways so going to a 400 is not that big of a deal.
I just want to make sure this is what is going on before I commit to the TH400 (or maybe 200r4).
(here is an older pic from when i cut in the American Powertrain flanges)
Last edited by ConnecticutJunkman; Jul 21, 2018 at 12:06 AM.
Melting Slicks
Joined: Sep 2016
Posts: 3,004
Likes: 104
From: NC
Don't you have to use the adapter plate for 4 speeds and 350's such as this pic shows?
http://www.5speedtransmissions.com/6...eSchematic.jpg
http://www.5speedtransmissions.com/6...eSchematic.jpg
Thread Starter
Instructor
Joined: Apr 2011
Posts: 161
Likes: 17
From: NW CT
Don't you have to use the adapter plate for 4 speeds and 350's such as this pic shows?
http://www.5speedtransmissions.com/6...eSchematic.jpg
http://www.5speedtransmissions.com/6...eSchematic.jpg
Melting Slicks
Joined: Jul 2010
Posts: 3,176
Likes: 633
From: perth western australia
Thread Starter
Instructor
Joined: Apr 2011
Posts: 161
Likes: 17
From: NW CT
I just need to make up my mind on which way to go with the trans...
Thanks
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod