![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
TH350 Tranny is it going to be a problem when?????
Hello everyone just wanted your advice or your 2 cents about th350 trannies!! What i was wondering was how much of horse power can you put to them intil something happens to them? The story is I just ordered a 383stroker with 460hp and 480tq to implant in my truck so right now im doing my cooling system over and ect to make sure this motor runs strong and stays cool and ect!! so i got thinking about the tranny if i was going to have to switch to a th400 or a 700??
thanks in advance guys |
![]() |
![]() |
![]() |
#2 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,287
|
Re: TH350 Tranny is it going to be a problem when?????
it depends on the th350 you buy. I have little faith in the generic rebuilds but if you get one thats modified, they have better life expectancy and they become almost bulletproof. Id recommend that you go to TCI who built me a trans years ago that I beat on for years in my el camino .It had a modified motor in it that was bored .30 over etc.
Lately i have a guy who builds transmissions for me who are dern good but hes in Elmont long island and is too far for you to deal with as he is a mom and pop shop
__________________
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!! |
![]() |
![]() |
![]() |
#3 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
|
Re: TH350 Tranny is it going to be a problem when?????
A lot of this has to do with traction. If you don't "hook it up" the transmission never really "sees" the amount of power you really put into it.
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. ![]() |
|
![]() |
![]() |
![]() |
#4 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
|
Re: TH350 Tranny is it going to be a problem when?????
the 700r4 is not a good option it will break even if you spend 3 grand on it. the th350 with a heavy sprag and drum assembly, good clutches and steels and a shift kit should hold it no problem. the th400 will also hold the horsepower no problem and the same upgrades would end up being performed. in the end the th400 is stronger but eats more hp than the th350. the important thing is to get a good torque converter.
__________________
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. |
![]() |
![]() |
![]() |
#5 | |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
Quote:
|
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
thanks alot for the replies you guys are a big help
Last edited by 1979blkchevy; 01-30-2010 at 11:47 AM. |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Mar 2009
Location: TN
Posts: 410
|
Re: TH350 Tranny is it going to be a problem when?????
I don't know, 460HP and 480 ft/lbs sounds like TH400 territory to me if your looking for longevity.
__________________
'69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Nov 2009
Location: Salisbury, NC
Posts: 316
|
Re: TH350 Tranny is it going to be a problem when?????
I have a th350 in my 83 that has been rebuilt and beefed up to handle 450hp. I ripped it apart playing around one day and talked to the shop about my plan for a 383 in the future. He rebuilt it with tci parts and a shift kit and it works well. I still have the 305 in it for now but he told me to stay with the th350 if I plan running it hard (which I do) the 350 will handle the abuse with the 383(but he is still bugging me to drop in a ls1). My tranny is now equivilant to the tci "street fighter".
|
![]() |
![]() |
![]() |
#9 | |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
Quote:
|
|
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Nov 2009
Location: Salisbury, NC
Posts: 316
|
Re: TH350 Tranny is it going to be a problem when?????
If you have too much money you can get a bowler but sit down before you look up the cost. TCI has good prices, it was a cheaper to rebiuld and beef up my tranny than it was to buy from tci.
|
![]() |
![]() |
![]() |
#11 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
|
Re: TH350 Tranny is it going to be a problem when?????
Any of the large aftermarket transmission companies have the parts. I personally used the tci sprag and drum assembly and it hasnt handled straight up torture for somewhere near 40k miles. I'm also running a tci converter with anti balooning plate. You will see that as a reccomended feature for any engine using nitrous but its a good idea in a heavy truck with high hp.
__________________
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. |
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Sep 2008
Location: Bailey, NC
Posts: 2,462
|
Re: TH350 Tranny is it going to be a problem when?????
You can also look here. I may get one of their overdrives. http://www.gearstar.net/
__________________
Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Jun 2005
Location: McArthur CA
Posts: 26
|
Re: TH350 Tranny is it going to be a problem when?????
I'm not wanting to get too far off track, but if your running all this in a 4x4 you may want to pay close attention to you t-case. I've run a small motor in front of a weak tranny and I still blew a chain out of a np203 (makes for a lot of really ugly noises). In defense of the 203, I was driving in a way that something had to give it up.
Last edited by primer; 01-31-2010 at 03:37 PM. |
![]() |
![]() |
![]() |
#14 | |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
Quote:
|
|
![]() |
![]() |
![]() |
#15 |
Registered User
Join Date: Jun 2005
Location: McArthur CA
Posts: 26
|
Re: TH350 Tranny is it going to be a problem when?????
It depends on what t-case you have now, but if I were you I'd be looking for and np205. I have a 203 in my step side and it has held up behind a 383 and th350 but I don't like having to worry about it every time I put my truck in a bind. After I get my burb built the truck's getting torn down and a 205 will replace the 203.
|
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: Jan 2010
Location: Kitchener, Ontario, Canada
Posts: 94
|
Re: TH350 Tranny is it going to be a problem when?????
My last hotrod s10 had a th350 and it worked great with a b&m kit and 3000 stall but I ran a cooler on it. THe bellhousing cracked all the way around and broke but the internals were fine.
|
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
|
![]() |
![]() |
![]() |
#18 |
Registered User
Join Date: Jan 2010
Location: Kitchener, Ontario, Canada
Posts: 94
|
Re: TH350 Tranny is it going to be a problem when?????
|
![]() |
![]() |
![]() |
#19 |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
|
![]() |
![]() |
![]() |
#20 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
|
Re: TH350 Tranny is it going to be a problem when?????
the 350 & 400 are almost identical in gearing. the th400 does however eat a little more horsepower but its a lot stronger in the first place. in my first post i didnt realize the truck was a 4x4. with that hp and big tires etc i would lean more toward a th400 with the same upgrades i mentioned for the th350. If you plan to beat on this thing you best bet would be to spend the money up front rather than waiting for stuff to break and replacing it as you go. its usually cheaper to spend more in the first place. i vote th400/np205 for a bulletproof driveline
__________________
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. |
![]() |
![]() |
![]() |
#21 |
haha, ford guys...
Join Date: Feb 2007
Location: Visalia, CA
Posts: 576
|
Re: TH350 Tranny is it going to be a problem when?????
th350 was made for up to 350hp brand new, a tired old trans will slip, get hot and boom.
th400 was like 425 or 500hp i dont remember. just remember, a good builder can make it bullet proof. 700r4+lock up converter built strong will be plenty. Ive thrown 10,000 miles at an old th350 with 330hp, burnouts, racing, the works, it lever let go. so its a toss up. me,? id sell ur 350, buy a 400 and bullet proof it. |
![]() |
![]() |
![]() |
#22 | |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
Quote:
|
|
![]() |
![]() |
![]() |
#23 | |
Registered User
Join Date: Oct 2009
Location: west virgina
Posts: 102
|
Re: TH350 Tranny is it going to be a problem when?????
Quote:
|
|
![]() |
![]() |
![]() |
Bookmarks |
|
|