Converting 3/4 ton to 1/2 ton - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JRE · 05-13-2010, 11:54 PM

How hard is it to convert a 3/4 ton to 1/2 ton i've got a 70 long box 2wd that has a 250 straight six with a 3 speed floor shift and a body that needs some work.I just bought a 68 3/4 ton with a 305 and automatic tranny and a body that is in better condition. I'd like to put 1/2 ton suspention in the truck so I can lower it easier and have a better selection of wheels to put on it.

junkyardjohn · 05-14-2010, 11:33 AM

IT CAN DEFINATELLY BE DONE. TO ME IT'S EASIER JUST TO SWAP THE SHEETMETAL. YOU PROBABLY WANT TO REPLACE THOSE 40 YEAR OLD CAB & RAD. SUPPORT BUSHINGS ANYWAY. (THIS PROBABLY ALREADY OCCOURED TO YOU.)

JOHN

71meangreenc10 · 05-14-2010, 02:05 PM

Simple,
I did it, just unbolt and swap change over the rear panhard bar too. Check your drive shaft to make sure the ujoints are the same, should be for both models, unless its a Turbo 400. Make sure you change all the front steering components too. if I am right they are different between the 10/20 series. Keeps the integrity of the system and you dont have to guess on replacement parts.

Smitty

69sixpackbee · 05-14-2010, 06:19 PM

Easy,,,,,swap the emblems

JRE · 05-15-2010, 10:14 PM

Thanks.I'm thinking about having Charlies drop chop convert it for me. Was going to have them lower my 70 c10 But found the c20 yesterday for $600 and it is in alot better shape.

05-13-2010, 11:54 PM	#1
JRE Registered User Join Date: Mar 2010 Location: Milwaukie Oregon Posts: 547	Converting 3/4 ton to 1/2 ton How hard is it to convert a 3/4 ton to 1/2 ton i've got a 70 long box 2wd that has a 250 straight six with a 3 speed floor shift and a body that needs some work.I just bought a 68 3/4 ton with a 305 and automatic tranny and a body that is in better condition. I'd like to put 1/2 ton suspention in the truck so I can lower it easier and have a better selection of wheels to put on it.

05-14-2010, 11:33 AM	#2
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	Re: Converting 3/4 ton to 1/2 ton IT CAN DEFINATELLY BE DONE. TO ME IT'S EASIER JUST TO SWAP THE SHEETMETAL. YOU PROBABLY WANT TO REPLACE THOSE 40 YEAR OLD CAB & RAD. SUPPORT BUSHINGS ANYWAY. (THIS PROBABLY ALREADY OCCOURED TO YOU.) JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

05-14-2010, 02:05 PM	#3
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: Converting 3/4 ton to 1/2 ton Simple, I did it, just unbolt and swap change over the rear panhard bar too. Check your drive shaft to make sure the ujoints are the same, should be for both models, unless its a Turbo 400. Make sure you change all the front steering components too. if I am right they are different between the 10/20 series. Keeps the integrity of the system and you dont have to guess on replacement parts. Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

05-14-2010, 06:19 PM	#4
69sixpackbee Registered User Join Date: Jan 2001 Location: Sabinal, Texas Posts: 1,706	Re: Converting 3/4 ton to 1/2 ton Easy,,,,,swap the emblems

05-15-2010, 10:14 PM	#5
JRE Registered User Join Date: Mar 2010 Location: Milwaukie Oregon Posts: 547	Re: Converting 3/4 ton to 1/2 ton Thanks.I'm thinking about having Charlies drop chop convert it for me. Was going to have them lower my 70 c10 But found the c20 yesterday for $600 and it is in alot better shape.

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