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#1 |
Senior Member
![]() Join Date: Apr 2003
Location: Howard, Kansas USA
Posts: 1,997
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th 400 trans
Is there any benefit to a 400 trans over a 350? Someone told me that the shifts are vac controlled, but does this mean you can't shift manually?
Thanks for the help David
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1969 K10 Custom 10 1997 Z71 2006 Volkswagen Jetta TDI 2006 King Ranch 1980 Wife |
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#2 |
dropped69
Join Date: Jan 2003
Location: Grand Canyon State
Posts: 120
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i had a 307/3spd in my 69 shortbed and i recently switched over to a 350/th400 combo...i can shift manually with my b&m floor shifter and the only vacuum line is one hose running from the trans to the intake...however the th400 usually involves an electric kickdown switch
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"And yet I find, yet I find...repeating in my head. If I can't be my own, I feel better dead." -Layne Staley (R.I.P) |
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#3 |
dropped69
Join Date: Jan 2003
Location: Grand Canyon State
Posts: 120
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also, to answer your first question...the turbo 350 is fine if you have a moderate small block...the 400 is just a more heavy duty transmission and usually is put behind a big block..just a stronger tranny is pretty much it...
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"And yet I find, yet I find...repeating in my head. If I can't be my own, I feel better dead." -Layne Staley (R.I.P) |
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#4 |
Senior Member
![]() Join Date: Apr 2003
Location: Howard, Kansas USA
Posts: 1,997
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i was considering putting a 454/400 in my 72 2wd, but wanted to be able to shift down with my bm shifter like you have, thanks for the help.
David
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1969 K10 Custom 10 1997 Z71 2006 Volkswagen Jetta TDI 2006 King Ranch 1980 Wife |
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#5 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,293
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while i post here and all i have 73+ trucks for now ( always looking for a nice 72) the truck im giving my son is a 76 and its got the 250 I 6 and came from the factory with a 3speed stick on the column. I was thinking of pulling out the standard transmission and replacing it with the th350. After sepaking with the guy who rebuilds all my transmissions ( and this guy is good he does all the airplane tugs at the airport) he said id be better off with the th400 due to the fact that if has more power ( due to the load my trucks pull and with the jackrabbit starts and all the kid will be doin with the truck. its kinda built heavier and would be a better transmission for my application
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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#6 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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the th350 is great for small blocks making 350 horsepower or so in a truck and over 400 in a nice light car with low gears. i however break a th350 every few months with a 400 horse small block in my heavy truck but im sure my lead foot has a little something to do with that. i need to upgrade to a th400. basically if your going to beat the hell outta the vehicle get a th400 and be done with it
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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#7 |
Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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when i do the 383 in my truck im gonna go for a turbo 400 instead of my 350 because they ARE stronger
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70 longbed 496/th400/Ford 9" |
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#8 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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Also a stock TH400 loves to come out of 1st gear if you manually hold it there around 5000rpms, and do a nasty tire-chirping, neck snapping 1-2 shift.
My favorite thing about TH400's. I wish i had one ![]()
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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#9 |
The Crazy Kracka
Join Date: Dec 2003
Location: San Diego, Ca
Posts: 60
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th 400
If you performance build a th350 then you can throw atleast 400 hp at them. I am running a 400sb in my 72 blazer with 400+ hp and I have no problems. Plus the th 400 robs the rear wheels of 40 hp. Plus you have to deal with an electric kick down linkage. I know that I like the th 350 in my Blazer better than the TH 400 in my 3/4 ton truck.
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#10 | |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,647
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Quote:
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#11 | |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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Quote:
I can only imagine what it would be like with a 396/375 ![]() ![]()
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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#12 |
My other Love
Join Date: Aug 2001
Location: Castlegar B.C. Canada
Posts: 4,085
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turbo 350's will eventually go into second even though youre in 1st we did in in my friends 4.3 van when we were trying to grenade the motor ust have been around 7 grand
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![]() Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life |
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