Rear end help needed, please... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1G1YY · 11-27-2021, 02:36 AM

I have a 69 12 bolt in my 62 with 3.08 gears and want to swap them to 3.73.
Local guy has 3.73 gears for sale with a carrier which is I think a 4 series unit, stamped 3866116. I need to know if I can install this carrier and gear set into my diff that is a 3 series one. Or am I better off using 3.42 gears that suit my original 3 series unit? Thanks, Pete

SkinnyG · 11-27-2021, 03:53 AM

You can swap any carrier into your housing.

1G1YY · 11-27-2021, 10:18 PM

Thanks, Skinny.

11-27-2021, 02:36 AM	#1
1G1YY Registered User Join Date: Dec 2016 Location: South Australia Posts: 40	Rear end help needed, please... I have a 69 12 bolt in my 62 with 3.08 gears and want to swap them to 3.73. Local guy has 3.73 gears for sale with a carrier which is I think a 4 series unit, stamped 3866116. I need to know if I can install this carrier and gear set into my diff that is a 3 series one. Or am I better off using 3.42 gears that suit my original 3 series unit? Thanks, Pete

11-27-2021, 03:53 AM	#2
SkinnyG Registered User Join Date: Feb 2012 Location: Beautiful BC, Canada, eh?! Posts: 2,267	Re: Rear end help needed, please... You can swap any carrier into your housing. __________________ 1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, turbo, LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate

11-27-2021, 10:18 PM	#3
1G1YY Registered User Join Date: Dec 2016 Location: South Australia Posts: 40	Re: Rear end help needed, please... Thanks, Skinny.

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