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My rear exhaust bolt has been hissing and I recently took it out cleaned it up and used Peramtex ultra copper on it. The next day when I started the car there was a stream of coolant squirting through the overflow tube in a timed sequence. The car was only on for 20 seconds or so before turning...

Hi All. Just wanted to know your thoughts on the best place to take a temp reading. The Upper Rad hose? the front of the heads?

I thought this was pretty neat. http://www.coolviewthermostat.com/

Hi All, So after pulling my heads off of my 273 I noticed that many of my coolant passages were almost completely sealed and the inside of the block looked a bright orange which I determined was just rust. It looked like some of the passages were welded shut which I thought was really...

Can you add a thermal clutch to a stock 6 blade fan on a 273?

I have been on the hunt for one of these Champion all-aluminum Radiators for weeks. They're cheap $150, supposedly no epoxy, and have a radiator for 1st generation valiantbarracudas which is a hard find. I called about a dozen suppliers and they were always out of the ec1635 and...

I've been checking out all the posts and online business about the GM HHR electric fan/shroud assembly working on the 22" Radiator and thinking this might be a way to kill two birds (no shroud, mech fan) with one stone. As far as I can tell, I'll need the fan assembly, the wiring harness, and a...

I know it's an age old question. I live in Southern California and have the heater core bypassed on my 273. Would love to hear what you guys think.

Hi Gang, I got a replacement water pump but noticed half way through removing it that the top inlets to the intake manifold are super rusted and fused. The new pump did not come with replacement inlets (see below). Anyone know the part numbers or best place to get these? Online has been a...