Tremec 3550 TKO 5-Speed in a 67-72? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Lumpy · 07-19-2003, 10:59 PM

Hello,
I was going to sell my 67 but I can't bring myself to do it. Right now it is my weekend driver only but I would like to put a 5-speed in it and drive it alot more. Has anyone ever put a Tremec TKO 3550 5 Speed in a 67-72 Truck with a low hump cab? If so, were any major modifications needed. I was looking at buying the tranny from the link below. Thanks.......Lumpy

http://www.5speedtransmissions.com/gm_3550_package.html

gmc67swb · 07-28-2003, 09:37 PM

HEY LUMPY, MY TRUCK IS A LOW HUMP TRUCK( ORIGINAL 3 SPEED ON THE TREE). NOT A WHOLE LOT GOING ON THERE. THE CLOSEST THING IS THE LIP UNDER THE CAB. MY MOTOR SITS ON THE I-6 SPOT AND THE SHIFTER ON THE TREMEC IS IN THE MID LOCATION.($225 EXTRA). YOU'LL NEED EITHER A C-4 OR C-6 YOKE DEPENDING ON WHETHER YOU GET THE STANDARD 3550 OR THE TKO. YOU'LL NEED TO SHORTEN THE DRIVE SHAFT AND GET A U-JOINT FOR FORD/GM. YOU WILL ALSO NEED A 26 SPLINE CLUTCH DISK. I USED THE ORIGINAL BELL HOUSING WITH MOUNTS THAT SUPPORT THE TRANNY. (NO CROSS MEMBER UNDER THE TAIL OF THE TRANNY). JUST ASK ME A FEW MORE QUESTIONS IF YOU WANT...I'M SURE I'M MISSING SOMETHING.

crazy longhorn · 07-28-2003, 09:52 PM

The Richmond is a cool swap too.....altho a little pricey(my wallet still hurts....so my wifey says

) Overdrive rocks on these old trucks! I have a .76 6th gear, & 4.10 rear gears.......& can cruise @ 80 mph @ 3000 . The 1st 4 gears are done quick too, like a close ratio muncie with 1 lower & 1 taller gear. That old truck is a fun to drive....never under a load....damn rough on tires tho

crazyL

07-19-2003, 10:59 PM	#1
Lumpy 2 tons of fun Join Date: Dec 2001 Location: Central, Ca Posts: 194	Tremec 3550 TKO 5-Speed in a 67-72? Hello, I was going to sell my 67 but I can't bring myself to do it. Right now it is my weekend driver only but I would like to put a 5-speed in it and drive it alot more. Has anyone ever put a Tremec TKO 3550 5 Speed in a 67-72 Truck with a low hump cab? If so, were any major modifications needed. I was looking at buying the tranny from the link below. Thanks.......Lumpy http://www.5speedtransmissions.com/gm_3550_package.html __________________ 67 Chevy,Short/Fleet,350,Saginaw 4-Speed,Lowered 4x2,small window,P/S,Edelbrock Intake/Carb,HEI,Gear Drive,Crane Cam 274H Three Rivers, Ca Pics at: http://www.cardomain.com/id/lumpy454

07-28-2003, 09:37 PM	#2
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	HEY LUMPY, MY TRUCK IS A LOW HUMP TRUCK( ORIGINAL 3 SPEED ON THE TREE). NOT A WHOLE LOT GOING ON THERE. THE CLOSEST THING IS THE LIP UNDER THE CAB. MY MOTOR SITS ON THE I-6 SPOT AND THE SHIFTER ON THE TREMEC IS IN THE MID LOCATION.($225 EXTRA). YOU'LL NEED EITHER A C-4 OR C-6 YOKE DEPENDING ON WHETHER YOU GET THE STANDARD 3550 OR THE TKO. YOU'LL NEED TO SHORTEN THE DRIVE SHAFT AND GET A U-JOINT FOR FORD/GM. YOU WILL ALSO NEED A 26 SPLINE CLUTCH DISK. I USED THE ORIGINAL BELL HOUSING WITH MOUNTS THAT SUPPORT THE TRANNY. (NO CROSS MEMBER UNDER THE TAIL OF THE TRANNY). JUST ASK ME A FEW MORE QUESTIONS IF YOU WANT...I'M SURE I'M MISSING SOMETHING. __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd

07-28-2003, 09:52 PM	#3
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	The Richmond is a cool swap too.....altho a little pricey(my wallet still hurts....so my wifey says ) Overdrive rocks on these old trucks! I have a .76 6th gear, & 4.10 rear gears.......& can cruise @ 80 mph @ 3000 . The 1st 4 gears are done quick too, like a close ratio muncie with 1 lower & 1 taller gear. That old truck is a fun to drive....never under a load....damn rough on tires tho crazyL __________________ 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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