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#1 |
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Location: Claremore, OK 74017
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3 speed differences
Apparently there are two types. I have one that is in a long bed with a 250 6 cylinder and it is different than a friends V8 longbed with a 3 speed. Are they interchangeable or do you need a different drive shaft?
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68 Short Stepside C-10 69 SWB C-10 70 Flatbed C-20 70 LWB C-20 BB402 70 LWB C-10 CST 70 LWB C-10 CST 71 Short Stepside Cheyenne C-10 72 LWB C-10 72 Blazer 4x4 4spd 95 Jeep Cherokee 4x4 |
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#2 |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,673
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Re: 3 speed differences
One is probably a Muncie 3 speed w/out a syncro first gear, while the other is probably a Saginaw with a syncronized first gear. That's the simple answer, for a more complex and confusing answer do a search. This topic came up about 8 months ago and has lot's of pictures.
Almost forgot, although they will bolt up the same, they are not the same length and will require some driveshaft mods.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... Last edited by Brad; 07-14-2007 at 12:22 PM. |
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#3 |
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Re: 3 speed differences
Is there a preference of one over the other. One better than the other?
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68 Short Stepside C-10 69 SWB C-10 70 Flatbed C-20 70 LWB C-20 BB402 70 LWB C-10 CST 70 LWB C-10 CST 71 Short Stepside Cheyenne C-10 72 LWB C-10 72 Blazer 4x4 4spd 95 Jeep Cherokee 4x4 |
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#4 |
Registered User
Join Date: Jun 2007
Location: mississippi
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Re: 3 speed differences
I was always under the impression there was a "wide ratio" and a "close ratio" 3-speed. ???
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#5 |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
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Re: 3 speed differences
Yes! The one with the synchros in it is preferable. Basically, if you have to come to a complete stop in order to put it into 1st gear then you have a non-synchro transmission. If you can put it into 1st at say, 15-30 mph, then you have a synchronized transmission. These are much more fun to drive.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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#6 |
Senior Member
Join Date: Feb 2005
Location: Maynardville, Tn
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Re: 3 speed differences
Early 60's was the last for non-synchro 3 speeds. GM did use fully synchronized 3 speeds in our trucks, I have a 71 with one. Here is the thread from a while back on the subject.
http://67-72chevytrucks.com/vboard/s...t=muncie+speed The Muncie is a heavier tranny and has a lower 1st (I think) but you don't see many of them.
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#7 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: 3 speed differences
The non syncrow 3speeds were in the cars till the mid 60's(about 65 IIRC), however the trucks had them as standard equipment on the 6 cyl through 67 or 68. the sb powered trucks had the saginawfrom 67 on, & I beleive the BB powered trucks had the heavier Muncie, that looked simular to the saginaw. 69 on had the I 6 & the smallblock trucks with with the saginaw as standard equipment.
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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#8 |
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Re: 3 speed differences
It looks like the non-saginaw is shorter, is that true. So you would need a longer drive shaft.
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68 Short Stepside C-10 69 SWB C-10 70 Flatbed C-20 70 LWB C-20 BB402 70 LWB C-10 CST 70 LWB C-10 CST 71 Short Stepside Cheyenne C-10 72 LWB C-10 72 Blazer 4x4 4spd 95 Jeep Cherokee 4x4 |
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#9 |
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Location: Jackson, New Jersey
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Re: 3 speed differences
wow ! thanks for bringing this up, here i thaught my trans was beat.
it sounds like i have a non syncro trans. thanks
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#10 | |
Out of the carpool lane.
Join Date: Jan 2000
Location: Clark Co, WA
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Re: 3 speed differences
Quote:
Btw, just to be clear my '67 came with what I believe was a Muncie 3 speed non-synchro trans.
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1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten... |
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