Cheyenne super 20 -donor questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

337 · 02-18-2004, 10:39 PM

I found a 72 Cheyenne Super 20 doner for the power steering box, brake booster w/ brake rod, bracket, master cylinder, and proportioning valve.

Will this work for my 70 C10 - 307 3speed?
I've searched and read that the brakebooster should bolt up.

I've also read the power steering will bolt up if my frame is indented.

Do I need the steering rod connected to the power gear box(the rod that connects to the steering column)?

Will i need to use a 72 pitman arm when installed?

thanks

**CPNE** · 02-18-2004, 11:01 PM

I've searched and read that the brakebooster should bolt up. YES

I've also read the power steering will bolt up if my frame is indented. YES

Do I need the steering rod connected to the power gear box(the rod that connects to the steering column)? NO

Will i need to use a 72 pitman arm when installed? YOU SHOULD INSTALL THE PS BOX AND IT'S PITMAN ARM, NO NEED TO USE THE ONE OFF YOUR MANUAL BOX.

Don't forget the PS Pump/brackets, as well as the lower crank pulleys (assuming your donor is a small block truck)

337 · 02-18-2004, 11:12 PM

SWEET!!!

Thanks for the info.

It had a 350.
The motor is gone but the pump, bracket and pulleys will be the easy thing to find.

Thanks again.

337 · 02-18-2004, 11:14 PM

oh yeah i also got the instrument panel with the gauges from the same truck.

Do you know if it will need mods?
I got idiot lights.

I took the oil sender assembly which attachs to the instr panel.

Hooter · 02-19-2004, 12:56 AM

yes you need to change the whole wiring harness out, the idiot light dash is wired completley different then the guages, so its best to get the wiring harness out of the other truck, or else you will fry your electrical system

Rod · 02-19-2004, 01:25 AM

Paul has a faq about swapping idiot light clusters to full guage. http://gmcpauls.com/Tech%20Tips1.htm

But you could always swap the inside and outside harness too.

337 · 02-19-2004, 02:17 AM

Thanks i'll try to modify mine.
if it doesn't work then i'll go get the harness.

02-18-2004, 10:39 PM	#1
337 Registered User Join Date: Jan 2004 Location: San Antonio, TEXAS Posts: 253	Cheyenne super 20 -donor questions I found a 72 Cheyenne Super 20 doner for the power steering box, brake booster w/ brake rod, bracket, master cylinder, and proportioning valve. Will this work for my 70 C10 - 307 3speed? I've searched and read that the brakebooster should bolt up. I've also read the power steering will bolt up if my frame is indented. Do I need the steering rod connected to the power gear box(the rod that connects to the steering column)? Will i need to use a 72 pitman arm when installed? thanks

02-18-2004, 11:01 PM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	I've searched and read that the brakebooster should bolt up. YES I've also read the power steering will bolt up if my frame is indented. YES Do I need the steering rod connected to the power gear box(the rod that connects to the steering column)? NO Will i need to use a 72 pitman arm when installed? YOU SHOULD INSTALL THE PS BOX AND IT'S PITMAN ARM, NO NEED TO USE THE ONE OFF YOUR MANUAL BOX. Don't forget the PS Pump/brackets, as well as the lower crank pulleys (assuming your donor is a small block truck) __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

02-19-2004, 12:56 AM	#5
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	yes you need to change the whole wiring harness out, the idiot light dash is wired completley different then the guages, so its best to get the wiring harness out of the other truck, or else you will fry your electrical system __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

02-19-2004, 01:25 AM	#6
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Paul has a faq about swapping idiot light clusters to full guage. http://gmcpauls.com/Tech%20Tips1.htm But you could always swap the inside and outside harness too. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

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02-18-2004, 11:12 PM	#3
337 Registered User Join Date: Jan 2004 Location: San Antonio, TEXAS Posts: 253	SWEET!!! Thanks for the info. It had a 350. The motor is gone but the pump, bracket and pulleys will be the easy thing to find. Thanks again.

02-18-2004, 11:14 PM	#4
337 Registered User Join Date: Jan 2004 Location: San Antonio, TEXAS Posts: 253	oh yeah i also got the instrument panel with the gauges from the same truck. Do you know if it will need mods? I got idiot lights. I took the oil sender assembly which attachs to the instr panel.

02-19-2004, 02:17 AM	#7
337 Registered User Join Date: Jan 2004 Location: San Antonio, TEXAS Posts: 253	Thanks i'll try to modify mine. if it doesn't work then i'll go get the harness.



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