454 and TH400 in a 70 C/10 Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hewl35 · 07-31-2005, 08:30 PM

I asked this question in the drivetrain forum but thought I'd ask here also since I'm sure I'm not the only person that has done this swap. I have installed a 76 454 w/ TH400 in my 70 C/10. Now I have two questions:

Question #1 Heater Hose connections: Off the stock intake manifold I had a heater hose running to the radiator. But for the life of me I can't remember where the other heater hose connection is from. I thought it had to come from the water pump but their is no nipple. So where does the other connection come from. I can't use the big block radiator since it's too big. So I plan on using a stock style 4 core radiator.

Question #2 TH400 Kickdown switch.
I have the complete accelarator setup from the 76 except for the cable to the carb. How do you wire this into the 70 wiring harness?

Thanks

jhow66 · 08-01-2005, 12:53 AM

#1--remove plug right above lower hose ans install nipple there.
#2--install this switch( can still buy it at dealers) on your gas pedal bracket and run a wire from one post to switch on 12 volt source on fuse panel. Run a wire from other post to trans (on drivers side-one spade connector).

hewl35 · 08-01-2005, 05:06 PM

Thanks for the reply!

Long Roof · 08-01-2005, 07:53 PM

Question: Did you use the BB engine mounts or SB?

Aaron

hewl35 · 08-02-2005, 08:10 AM

Quote:

Originally Posted by Long Roof

Question: Did you use the BB engine mounts or SB?

Aaron

Aaron,

I used bb frame stands from teeitoff and sb rubber mounts from the corner parts store. I looked in the FAQ's and saw a post from txfireman, i think that was his name.

Jeff

08-01-2005, 05:06 PM	#3
hewl35 Registered User Join Date: May 2005 Location: Merriam, KS Posts: 13	Thanks for the reply Thanks for the reply!

08-01-2005, 07:53 PM	#4
Long Roof Old School, New Style Join Date: Jun 2005 Location: Monroeville, Ohio Posts: 790	Question: Did you use the BB engine mounts or SB? Aaron __________________ The Good: - 72 GMC Jimmy 4x4 - 307 cid / 350 th - 70 Chevy Suburban 1/2T 2wd - 454 cid /400 th - 96 Chevy Impala SS - mainly stock - 98 Chevy Tahoe LT 4x4 - all stock The Bad: - 86 Chevy Suburban 1/2T 4x4 - winter beater The Ugly: - 72 Chevy Suburban 1/2T 2wd - parts truck

07-31-2005, 08:30 PM	#1
hewl35 Registered User Join Date: May 2005 Location: Merriam, KS Posts: 13	454 and TH400 in a 70 C/10 Questions I asked this question in the drivetrain forum but thought I'd ask here also since I'm sure I'm not the only person that has done this swap. I have installed a 76 454 w/ TH400 in my 70 C/10. Now I have two questions: Question #1 Heater Hose connections: Off the stock intake manifold I had a heater hose running to the radiator. But for the life of me I can't remember where the other heater hose connection is from. I thought it had to come from the water pump but their is no nipple. So where does the other connection come from. I can't use the big block radiator since it's too big. So I plan on using a stock style 4 core radiator. Question #2 TH400 Kickdown switch. I have the complete accelarator setup from the 76 except for the cable to the carb. How do you wire this into the 70 wiring harness? Thanks

08-01-2005, 12:53 AM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	#1--remove plug right above lower hose ans install nipple there. #2--install this switch( can still buy it at dealers) on your gas pedal bracket and run a wire from one post to switch on 12 volt source on fuse panel. Run a wire from other post to trans (on drivers side-one spade connector). Attached Images __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer



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