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Mod | | | Forums66 Topics128,021 Posts1,055,355 Members48,420 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2006 Posts: 117 Shop Shark | | Shop Shark Joined: Oct 2006 Posts: 117 | OK so a good friend of mine has a 50 AD that was put on an s-10 chassis. We are 95% sure it is a 1992 chassis with a 4.3 v6 and 700r4 trans. He purchased it as it is about 2 years ago and has really been enjoying it since.
He came by the shop the other day and wanted to know how hard it would be to put a heater in it (hasn't had one since he has had it). I had one out of a parts truck (AD) so we pulled it out and cleaned it all up and appears to be just what the Dr. ordered to get the chill off.
Now for the confusion.
The 4.3 only seams to have one port for a heater hose on the rear of the intake manifold (plugged right now) but none on the water pump as I am used to on sbc's.
Question is, where did the other heater hose go?
Any suggestions before I go out looking for somebody to let me look under the hood of their s-10 would be welcome.
Chuck | | | | | Joined: Feb 2004 Posts: 29,746 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,746 | Get ready for a flood of coolant in the cab. That 1950-something heater core isn't going to play well with the 15+ PSI cooling system pressure of the 4.3 L engine. Either drop the radiator cap pressure down to 7 PSI, or rebuild the heater with a modern core designed for today's pressures. A lot of the S-10's had a hose nipple built into one of the radiator tanks for the heater return line.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Oct 2006 Posts: 117 Shop Shark | | Shop Shark Joined: Oct 2006 Posts: 117 | Thanks for the advice on the system pressure. I suspected the return line may have gone back to the radiator but wasn't sure. We'll have to solder a nipple in for that.
Thanks for the reply and the help.
Chuck | | |
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