auto trans for 250/I6 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

big blue 72 · 04-09-2003, 11:13 AM

have looked in the search page and couldnt find anything on this.
What trucks or cars should i look for to get an auto tranny for my 250 ? i have found an original auto shift column from a 69 truck so it will all look stcok. What years cars or truck can i get an automatic out of?

**Palf70Step** · 04-09-2003, 12:51 PM

Darn near any rearwheel drive GM truck or car will work. Far as I remeber all the small black V8s, the V6,s and in-line sixes will bolt up. Most will proably take what the 6 dishes out too. I'm not sure about the big block bolt pattern, but I think they will work too.

Turbo350 probably be the cheapest way to go...70 to early 80 novas, malibus, Caprices, truck are a good starting point.

PanelDeland · 04-09-2003, 01:42 PM

Several of the BB members have done 700R4 retrofits.I think that is what I will eventually do.I think the 6 has more than enough torque to handle that.It would give you much better highway manners.I would like to find out if a 200R4 is stout enough for the 6.It might be a cheaper buy in.
The overdrive will help on the road since the 6 doesn't like to wind as tight as a smallblock.

71402BB · 04-09-2003, 01:51 PM

As far as a th350 goes, I compleatly agree with what he says, just don't forget that you will need the shift linkage and auto tranny X-member out of a pickup! I'm not sure what years interchange on that stuff after 72....

1968GMC · 04-09-2003, 05:17 PM

you will also need a starter to go with the transmission. The starter you have now bolts to your manual trans. With a th350 the strarter bolts to your motor. You also need a automatic flywheel.

Longhorn Man · 04-09-2003, 11:43 PM

the 200 4R is an outstanding tranny and would be the ideal way to push your truck around. in some ways it is better than a 700 R4, but with the lower output of an inline, the few areas of the 200 4R that is worse, would never show up.

big blue 72 · 04-10-2003, 11:45 AM

Thanks guys, i wasnt sure what cars and /or trucks i should start looking at in the boneyards. Plenty of them down here so, i'll keep in touch and let ya know what i come up with.
the th350 will probably be my first choice.
Andy, (and other Buckeyes), will see ya in July, if not sooner.

04-09-2003, 11:13 AM	#1
big blue 72 Senior Member Join Date: May 2002 Location: hamilton,ohio,usa Posts: 1,499	auto trans for 250/I6 have looked in the search page and couldnt find anything on this. What trucks or cars should i look for to get an auto tranny for my 250 ? i have found an original auto shift column from a 69 truck so it will all look stcok. What years cars or truck can i get an automatic out of?

04-09-2003, 12:51 PM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,083	Darn near any rearwheel drive GM truck or car will work. Far as I remeber all the small black V8s, the V6,s and in-line sixes will bolt up. Most will proably take what the 6 dishes out too. I'm not sure about the big block bolt pattern, but I think they will work too. Turbo350 probably be the cheapest way to go...70 to early 80 novas, malibus, Caprices, truck are a good starting point. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

04-09-2003, 01:42 PM	#3
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Several of the BB members have done 700R4 retrofits.I think that is what I will eventually do.I think the 6 has more than enough torque to handle that.It would give you much better highway manners.I would like to find out if a 200R4 is stout enough for the 6.It might be a cheaper buy in. The overdrive will help on the road since the 6 doesn't like to wind as tight as a smallblock. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

04-09-2003, 01:51 PM	#4
71402BB now thats a true COON DOG Join Date: Nov 2000 Location: Franconia, NH Posts: 1,977	As far as a th350 goes, I compleatly agree with what he says, just don't forget that you will need the shift linkage and auto tranny X-member out of a pickup! I'm not sure what years interchange on that stuff after 72.... __________________ current project 67 402BB stout th350 3.08's with a locker. Plan on tubs 18.5's out back! (thanks Burnsman!) 71 SWB Stepside, was a 250, now is a 402 Big Block with 4 speed and 3.73's ( was crushed by a tree, bed sold, motor pulled) was my first truck!... oh well... 72 LWB 4x4 350 4-speed 3.08's posi wearing army olive drab green (SOLD!) 68 BURB 50TH LOOKALIKE work in progress, soon to have 250-I6 with a 3-speed on the tree 4.11's and posi ( currently sitting in back yard tarped awaiting time, $$$, and lots of love!) 67 1 TON- work truck 396 sm 420 4-speed, flat bed 4.57 gears "big red" (my first landscape truck, very rusty and crusty! but still gets the job done when needed!)

04-09-2003, 05:17 PM	#5
1968GMC love my truck Join Date: May 2001 Location: aylmer QC Posts: 648	you will also need a starter to go with the transmission. The starter you have now bolts to your manual trans. With a th350 the strarter bolts to your motor. You also need a automatic flywheel.

04-09-2003, 11:43 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	the 200 4R is an outstanding tranny and would be the ideal way to push your truck around. in some ways it is better than a 700 R4, but with the lower output of an inline, the few areas of the 200 4R that is worse, would never show up.

04-10-2003, 11:45 AM	#7
big blue 72 Senior Member Join Date: May 2002 Location: hamilton,ohio,usa Posts: 1,499	Thanks guys, i wasnt sure what cars and /or trucks i should start looking at in the boneyards. Plenty of them down here so, i'll keep in touch and let ya know what i come up with. the th350 will probably be my first choice. Andy, (and other Buckeyes), will see ya in July, if not sooner.



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