The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - BBC temp creeps at idle; how did factory do it?

jumpsoffrock · 06-16-2021, 11:38 PM

Yes I have a Hayden 2747 HD fan clutch.
Water pump says Made in USA and is painted engine color, so I'd say it was replaced when they rebuilt the engine an "unknown long time ago."(what I was told)

Rad cap was given to me, looks newer, nice condition 16 lbs
Vacuum advance is hooked to bottom of carb, so Ported vacuum.
I believe I reset timing to 10-12º BTDC

Thanks for your input Steve.....although it sounds to me this running hot thing might be normal....

06-16-2021, 11:38 PM	#4
jumpsoffrock Registered User Join Date: Apr 2014 Location: California Posts: 926	Re: BBC temp creeps at idle; how did factory do it? Yes I have a Hayden 2747 HD fan clutch. Water pump says Made in USA and is painted engine color, so I'd say it was replaced when they rebuilt the engine an "unknown long time ago."(what I was told) Rad cap was given to me, looks newer, nice condition 16 lbs Vacuum advance is hooked to bottom of carb, so Ported vacuum. I believe I reset timing to 10-12º BTDC Thanks for your input Steve.....although it sounds to me this running hot thing might be normal....