Transmission Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gunrunner95 · 11-02-2013, 07:51 PM

The truck I bought recently came with a tranny in it, the pan says 350 Turbo on it... How would I go about verifying that it really is as such?

**bigmac73** · 11-02-2013, 08:02 PM

compare the pan shape to one on the web, easiest way

kxmotox247 · 11-02-2013, 08:02 PM

The pan should be square but one corner is at an angle.

**bigmac73** · 11-02-2013, 08:03 PM

how is the fishing up in Kaw Lake???

gunrunner95 · 11-02-2013, 08:18 PM

Thanks guys I appreciate it.
Mike- Im not a big fisher but my friends dad is and he did very well everytime he went out. Are you originally from the area?

gunrunner95 · 11-02-2013, 08:32 PM

We have success, It is square with an angled corner on it.
Next question I have... If i get a mild 402 or 454 can I use this transmission?

71K20chevy · 11-02-2013, 08:35 PM

It should handle a 402 with some care not to beat on it every time the light goes green, but I definitely wouldn't trust it behind even a stock 454. At that point, the TH350 should be upgraded, or possibly a swap to a TH400.

oklalawnboy · 11-02-2013, 08:36 PM

From one Okie to another. I always thought a turbo 400 worked best with a 454. My 2 cents.

gunrunner95 · 11-02-2013, 08:39 PM

Thanks for the input guys... I was thinking a Turbo400 would more than likely be needed but as I am not experienced with transmissions I figured it best to ask

Tinkermc · 11-02-2013, 08:40 PM

I'm old school but a 700r4 is hard to beat.

71K20chevy · 11-02-2013, 08:51 PM

Quote:

Originally Posted by gunrunner95

Thanks for the input guys... I was thinking a Turbo400 would more than likely be needed but as I am not experienced with transmissions I figured it best to ask

A properly built TH350 would handle the power, but is it worth it? By the time you build the 350, you could buy a new 400. Only thing with the 400 is the extra rotating mass eats a little extra HP.

gunrunner95 · 11-02-2013, 09:00 PM

Thanks for the help. 700r4 looks like it will be a little too expensive

**bigmac73** · 11-03-2013, 10:16 AM

Quote:

Originally Posted by gunrunner95

Thanks guys I appreciate it.
Mike- Im not a big fisher but my friends dad is and he did very well everytime he went out. Are you originally from the area?

I grew up in Moore, Ok , but dad and i would go fishing up there and around stillwater when i was younger.

I agree the 400 turbo is the way to go with a big block, but you have to change drive shaft and yoke, and detent setup

gunrunner95 · 11-03-2013, 11:32 AM

Bigmac73- Small world ehh? Thanks for the info 400 turbo is the way I'm going to go. Is the driveshaft,yoke and detent setup hard to change?

gunrunner95 · 11-03-2013, 11:37 AM

Bigmac73- Small world ehh? Thanks for the info 400 turbo is the way I'm going to go. Is the driveshaft,

cdowns · 11-03-2013, 03:21 PM

you will need a new driveshaft for the turbo400

gunrunner95 · 11-03-2013, 03:50 PM

cdowns- Thanks, I wasn't sure if I could shorten it or if I would need a new one.

Lattimer · 11-03-2013, 07:37 PM

Quote:

Originally Posted by gunrunner95

cdowns- Thanks, I wasn't sure if I could shorten it or if I would need a new one.

I believe the yokes are different.

**bigmac73** · 11-03-2013, 08:21 PM

i had to shorten mine about 3 inched if i remember right, i never hooked up the detent switch back then, and i had to find a thick walled yoke,

gunrunner95 · 11-03-2013, 10:58 PM

Lattimer- Thanks
bigmac73- thank you for the info

gunrunner95 · 11-03-2013, 10:59 PM

Lattimer- Thanks
bigmac73- thank you for the info

Longhorn 70 · 11-03-2013, 11:35 PM

My line of thinking is this. A TH350 is a great tranny in a light low geared car/truck. You may also consider a BUILT 700R4. I had one behind a 431 cu. in. Olds for quite a while. It didn't get hammered all the time but it did have some torque pushed to it. I used to boil 12x33x15 MS tires with it in the truck. The 700 is still in one piece. I attribute that to the big @$$ cooler that was installed with it.

I hope I didn't jynx it.

gunrunner95 · 11-03-2013, 11:45 PM

Longhorn70- I appreciate the info. I was planning on getting a 454 from a motor home as I have read on here where many had done so with good results. I do tend to be throttle heavy in my 89 with a 350, but I would have to me more careful with a big block local cops seem to love pulling over teenagers driving trucks

11-02-2013, 07:51 PM	#1
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Transmission Help The truck I bought recently came with a tranny in it, the pan says 350 Turbo on it... How would I go about verifying that it really is as such? __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-02-2013, 08:02 PM	#2
bigmac73 Senior Member Join Date: Mar 2012 Location: Chesapeake, Va Posts: 1,275	Re: Transmission Help compare the pan shape to one on the web, easiest way __________________ Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks

11-02-2013, 08:02 PM	#3
kxmotox247 Senior Member Join Date: Jul 2002 Location: Champaign, IL Posts: 1,397	Re: Transmission Help The pan should be square but one corner is at an angle.

11-02-2013, 08:03 PM	#4
bigmac73 Senior Member Join Date: Mar 2012 Location: Chesapeake, Va Posts: 1,275	Re: Transmission Help how is the fishing up in Kaw Lake??? __________________ Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks

11-02-2013, 08:18 PM	#5
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Thanks guys I appreciate it. Mike- Im not a big fisher but my friends dad is and he did very well everytime he went out. Are you originally from the area? __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-02-2013, 08:32 PM	#6
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help We have success, It is square with an angled corner on it. Next question I have... If i get a mild 402 or 454 can I use this transmission? __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-02-2013, 08:35 PM	#7
71K20chevy Registered User Join Date: Jul 2012 Location: Ft Wayne Indiana Posts: 1,204	Re: Transmission Help It should handle a 402 with some care not to beat on it every time the light goes green, but I definitely wouldn't trust it behind even a stock 454. At that point, the TH350 should be upgraded, or possibly a swap to a TH400. __________________ 71 K20 64 GMC mud truck

11-02-2013, 08:36 PM	#8
oklalawnboy Registered User Join Date: Jan 2012 Location: Glencoe Alabama Posts: 510	Re: Transmission Help From one Okie to another. I always thought a turbo 400 worked best with a 454. My 2 cents. __________________ 72 Cheyenne super 10 08 3500 HD 4dr dually 12 ford flex (wifes ride) 76 Monte Carlo 83 Chevy short wide Silverado 96 Mazda Miata, 2000 Allegro Bus

11-02-2013, 08:39 PM	#9
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Thanks for the input guys... I was thinking a Turbo400 would more than likely be needed but as I am not experienced with transmissions I figured it best to ask __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-02-2013, 08:40 PM	#10
Tinkermc Registered User Join Date: Jul 2011 Location: Farmville, Va Posts: 3,026	Re: Transmission Help I'm old school but a 700r4 is hard to beat.

11-02-2013, 09:00 PM	#12
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Thanks for the help. 700r4 looks like it will be a little too expensive __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-03-2013, 11:32 AM	#14
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Bigmac73- Small world ehh? Thanks for the info 400 turbo is the way I'm going to go. Is the driveshaft,yoke and detent setup hard to change? __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton Last edited by gunrunner95; 11-03-2013 at 11:39 AM.

11-03-2013, 11:37 AM	#15
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Bigmac73- Small world ehh? Thanks for the info 400 turbo is the way I'm going to go. Is the driveshaft, __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-03-2013, 03:21 PM	#16
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Transmission Help you will need a new driveshaft for the turbo400 __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

11-03-2013, 03:50 PM	#17
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help cdowns- Thanks, I wasn't sure if I could shorten it or if I would need a new one. __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton



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11-03-2013, 08:21 PM	#19
bigmac73 Senior Member Join Date: Mar 2012 Location: Chesapeake, Va Posts: 1,275	Re: Transmission Help i had to shorten mine about 3 inched if i remember right, i never hooked up the detent switch back then, and i had to find a thick walled yoke, __________________ Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks

11-03-2013, 10:58 PM	#20
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Lattimer- Thanks bigmac73- thank you for the info __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-03-2013, 10:59 PM	#21
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Lattimer- Thanks bigmac73- thank you for the info __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

11-03-2013, 11:35 PM	#22
Longhorn 70 Registered User Join Date: Dec 2012 Location: Chandler AZ Posts: 1,149	Re: Transmission Help My line of thinking is this. A TH350 is a great tranny in a light low geared car/truck. You may also consider a BUILT 700R4. I had one behind a 431 cu. in. Olds for quite a while. It didn't get hammered all the time but it did have some torque pushed to it. I used to boil 12x33x15 MS tires with it in the truck. The 700 is still in one piece. I attribute that to the big @$$ cooler that was installed with it. I hope I didn't jynx it. __________________ 1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9

11-03-2013, 11:45 PM	#23
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: Transmission Help Longhorn70- I appreciate the info. I was planning on getting a 454 from a motor home as I have read on here where many had done so with good results. I do tend to be throttle heavy in my 89 with a 350, but I would have to me more careful with a big block local cops seem to love pulling over teenagers driving trucks __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

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