(warning lots of questions) automatic to manual swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HalfTon · 10-10-2011, 10:32 PM

Ive been wanting to convert my truck from a th350 to a manual shift since I got it but Im wondering what are all the parts needed? I plan on buying a used muncie 4 speed or possibly a 5 speed out of a 90's chevy truck. Could this job be done in a weekend by an average joe like me or is it a tough job that should be done by a professional? Also if I go with the 4 speed what muncie would be the best choice? Whats the differences between the M-20, m-21, m-22? This truck is daily driven on highways and backroads if that makes a difference.
Thanks.

bigbadchev72 · 10-10-2011, 10:40 PM

I have done the swap a couple times in 4wds, It is a very straight forward swap, Just make sure you have everything, Clutch pedals, linkage, correct flywheel for the motor you are running, clutch, pilot bushing, flywheel bolts, pressure plate bolts, I think you may need a tall transmission hump, and possibly a new driveline, if you go with a newer tranny since the length may be different.

The 5 speed out of a newer truck may need to have a hydraulic bellhousing which complicates things a little more. Both swaps I have done have been the sm465 and were both hydro clutches.

**LockDoc** · 10-10-2011, 11:08 PM

-
This should keep you busy for a while...

http://67-72chevytrucks.com/vboard/s...d.php?t=417079

http://67-72chevytrucks.com/vboard/s...d.php?t=212959

http://67-72chevytrucks.com/vboard/s...d.php?t=438224

LockDoc

HalfTon · 05-23-2012, 11:16 PM

ok, im kinda bringing this thread back from the dead haha. Well ive still been wanting to do this swap just havent found the right donor truck until today. I was out at a salvage yard and back in the trees was a 68 lwb that hasnt had a part taken off it and had all the manual parts I would need, I think haha. the truck had a 350 and a 4 speed all still in the truck. the question is, would this 68 supply me with all the parts needed to swap a 4 speed into my 69'? I dont plan on using the granny low that is in this 68' but instead use in a muncie or t10. Also in the same yard I found another c10 with a set of buckets that I plan on picking up too if the price is right.

firedog · 08-25-2012, 01:53 AM

The 4 speed swap is pretty straight foward. That tranny is a heavy one however. Dont forget the 4 speed hump! Did you pick up the buckets?

oklalawnboy · 08-25-2012, 07:11 AM

Don't forget to list your automatic stuff for sale when you get-r-done

10-10-2011, 10:32 PM	#1
HalfTon Registered User Join Date: Jul 2011 Location: Imperial, MO Posts: 128	(warning lots of questions) automatic to manual swap Ive been wanting to convert my truck from a th350 to a manual shift since I got it but Im wondering what are all the parts needed? I plan on buying a used muncie 4 speed or possibly a 5 speed out of a 90's chevy truck. Could this job be done in a weekend by an average joe like me or is it a tough job that should be done by a professional? Also if I go with the 4 speed what muncie would be the best choice? Whats the differences between the M-20, m-21, m-22? This truck is daily driven on highways and backroads if that makes a difference. Thanks. __________________ Put that hammer down and give it hell! 69' custom/10 longbed. 1999 1500 4x4 5 speed

10-10-2011, 10:40 PM	#2
bigbadchev72 People know me Join Date: Jun 2007 Location: Hermiston, oregon Posts: 840	Re: (warning lots of questions) automatic to manual swap I have done the swap a couple times in 4wds, It is a very straight forward swap, Just make sure you have everything, Clutch pedals, linkage, correct flywheel for the motor you are running, clutch, pilot bushing, flywheel bolts, pressure plate bolts, I think you may need a tall transmission hump, and possibly a new driveline, if you go with a newer tranny since the length may be different. The 5 speed out of a newer truck may need to have a hydraulic bellhousing which complicates things a little more. Both swaps I have done have been the sm465 and were both hydro clutches. __________________ 1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels 1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels

10-10-2011, 11:08 PM	#3
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,772	Re: (warning lots of questions) automatic to manual swap - This should keep you busy for a while... http://67-72chevytrucks.com/vboard/s...d.php?t=417079 http://67-72chevytrucks.com/vboard/s...d.php?t=212959 http://67-72chevytrucks.com/vboard/s...d.php?t=438224 LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

05-23-2012, 11:16 PM	#4
HalfTon Registered User Join Date: Jul 2011 Location: Imperial, MO Posts: 128	Re: (warning lots of questions) automatic to manual swap ok, im kinda bringing this thread back from the dead haha. Well ive still been wanting to do this swap just havent found the right donor truck until today. I was out at a salvage yard and back in the trees was a 68 lwb that hasnt had a part taken off it and had all the manual parts I would need, I think haha. the truck had a 350 and a 4 speed all still in the truck. the question is, would this 68 supply me with all the parts needed to swap a 4 speed into my 69'? I dont plan on using the granny low that is in this 68' but instead use in a muncie or t10. Also in the same yard I found another c10 with a set of buckets that I plan on picking up too if the price is right. __________________ Put that hammer down and give it hell! 69' custom/10 longbed. 1999 1500 4x4 5 speed

08-25-2012, 01:53 AM	#5
firedog Registered User Join Date: Jun 2000 Location: Festus, Missouri Posts: 1,005	Re: (warning lots of questions) automatic to manual swap The 4 speed swap is pretty straight foward. That tranny is a heavy one however. Dont forget the 4 speed hump! Did you pick up the buckets? __________________ SOLD 1968 Chevy SWB Fleet 350/350 combo Tach/tilt/buddy buckets Bagged/18" Wheels Black on Black Project "Pandemic" the Farm Rat 1927 Chevy Capitol Truck Rat rod '30 Model A Frame Dual Carb 5.3 LS http://www.67-72chevytrucks.com/vboa...d.php?t=804162 2007 GMC 4 DOOR 2WD BUILT 5.3 STAGE 3 CAM 93 TUNE LIFTED 22X12 WHEELS 33" TIRES 2023 Jeep RENEGADE Wifes ride

08-25-2012, 07:11 AM	#6
oklalawnboy Registered User Join Date: Jan 2012 Location: Glencoe Alabama Posts: 510	Re: (warning lots of questions) automatic to manual swap Don't forget to list your automatic stuff for sale when you get-r-done __________________ 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

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