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

**Android04** · 12-12-2018, 08:38 PM

Guys I need some help! My trans blew apart and I found another one local. The guy is saying it is out of an Impala; are they the same as our trucks?

1965 327sbc 3 on the tree swb truck, trans is a 3 speed with a 4 bolt side cover. The one from the impala is identical from the pictures.

Thanks so much

**cwcarpenter98** · 12-13-2018, 12:10 AM

The case will bolt to the bell housing just fine, but make sure your tail shaft is the same length. Some 4 bolts have a long tail shaft, others have a shorter tail shaft. Since they are both 4 bolt covers, you can swap side covers to retain the truck shift forks

**Android04** · 12-13-2018, 04:50 AM

Perfect, thank you very much

MikeN · 12-13-2018, 10:52 AM

The diameter of the front bearing retainer may be smaller, in which case it will bolt to your bellhousing, but won't be indexed properly. You might want to check that - bearing retainer outside diameter should match the inside diameter of the round hole at rear of your bellhousing. You can probably swap over the bearing retainer from your truck transmission if they don't match.

**Android04** · 12-13-2018, 11:22 AM

Quote:

Originally Posted by MikeN

The diameter of the front bearing retainer may be smaller, in which case it will bolt to your bellhousing, but won't be indexed properly. You might want to check that - bearing retainer outside diameter should match the inside diameter of the round hole at rear of your bellhousing. You can probably swap over the bearing retainer from your truck transmission if they don't match.

Thanks for the heads up. I will check that as well.

andyh1956 · 12-13-2018, 02:13 PM

Be sure to ask the seller of the Impala trans if it has EVER jumped third gear.
At least you'll be able to Hear him say it even if it does...

factorystock · 12-16-2018, 06:46 PM

Great time to upgrade to a full synchro 3 speed.

andyh1956 · 12-17-2018, 12:04 PM

Quote:

Originally Posted by factorystock

Great time to upgrade to a full synchro 3 speed.

Times 12!

After scrounging the country side over for trans / parts to fix all the crashboxes I destroyed in high school I can't see how's there any left out there at all!

12-12-2018, 08:38 PM	#1
Android04 Senior Member Join Date: Aug 2017 Location: Louisville, KY Posts: 380	3 Speed Transmission Guys I need some help! My trans blew apart and I found another one local. The guy is saying it is out of an Impala; are they the same as our trucks? 1965 327sbc 3 on the tree swb truck, trans is a 3 speed with a 4 bolt side cover. The one from the impala is identical from the pictures. Thanks so much

12-13-2018, 12:10 AM	#2
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,491	Re: 3 Speed Transmission The case will bolt to the bell housing just fine, but make sure your tail shaft is the same length. Some 4 bolts have a long tail shaft, others have a shorter tail shaft. Since they are both 4 bolt covers, you can swap side covers to retain the truck shift forks __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

12-13-2018, 04:50 AM	#3
Android04 Senior Member Join Date: Aug 2017 Location: Louisville, KY Posts: 380	Re: 3 Speed Transmission Perfect, thank you very much

12-13-2018, 10:52 AM	#4
MikeN Registered User Join Date: Oct 2007 Location: Marietta, GA Posts: 805	Re: 3 Speed Transmission The diameter of the front bearing retainer may be smaller, in which case it will bolt to your bellhousing, but won't be indexed properly. You might want to check that - bearing retainer outside diameter should match the inside diameter of the round hole at rear of your bellhousing. You can probably swap over the bearing retainer from your truck transmission if they don't match.

12-13-2018, 02:13 PM	#6
andyh1956 Registered User Join Date: Mar 2010 Location: thomastown mississippi Posts: 1,261	Re: 3 Speed Transmission Be sure to ask the seller of the Impala trans if it has EVER jumped third gear. At least you'll be able to Hear him say it even if it does...

12-16-2018, 06:46 PM	#7
factorystock Registered User Join Date: Feb 2007 Location: west coast Posts: 3,396	Re: 3 Speed Transmission Great time to upgrade to a full synchro 3 speed.



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