correct radiator cap

[Darren P.]

I have NOS gm #861050 15# radiator cap "inspect fall and spring" logo on it. is this the correct one for both 64-69 big and small blocks? thanks!

[Jack H.]

Re: correct radiator cap

That's a later era service replacement cap made from SS...

[Darren P.]

Re: correct radiator cap

That's a later era service replacement cap made from SS...

pardon my ignorance but what exactly is different then from the original one? thanks

[Patrick H.]

Re: correct radiator cap

pardon my ignorance but what exactly is different then from the original one? thanks

Depending on the year your cap was made, it can differ in material, font, size of the "ears," logo and many other ways. They really differ in "all" of the notable ways - except that they're both round radiator caps.

Patrick

[Joe L.]

Re: correct radiator cap

Depending on the year your cap was made, it can differ in material, font, size of the "ears," logo and many other ways. They really differ in "all" of the notable ways - except that they're both round radiator caps.

Patrick

...and with respect to these sort of differences one cannot rely on part number to differentiate original-style caps from later replacements. Changes in the shell, including not only stamping but also material and configuration, were not always accompanied by a difference in part number.

[Rick S.]

Re: correct radiator cap

Darren,
I see in the heading you list your question for a 1967 cap. Are you looking for a correct 67 small block or big block cap?
Rick

[Darren P.]

Re: correct radiator cap

Darren,
I see in the heading you list your question for a 1967 cap. Are you looking for a correct 67 small block or big block cap?
Rick

big block but I would like to know what is correct for big and small thanks!

[Jack H.]

Re: correct radiator cap

What's wrong with the descriptive text cited in the Judging Guide?

[D S.]

Re: correct radiator cap

From a five page article written for the Corvette Restorer by Patrick Hulst and Tony Hurtado. Page five is on a follow-up post:
The RC-15 Radiator Cap_1.jpg

The RC-15 Radiator Cap_2.jpg

The RC-15 Radiator Cap_3.jpg

The RC-15 Radiator Cap_4.jpg

[D S.]

Re: correct radiator cap

From a five page article written for the Corvette Restorer by Patrick Hulst and Tony Hurtado. Page five:
The RC-15 Radiator Cap_5.jpg

[Patrick H.]

Re: correct radiator cap

From a five page article written for the Corvette Restorer by Patrick Hulst and Tony Hurtado.

Nice article.

[D S.]

Re: correct radiator cap

Damn right, it is! I learn a lot from the Corvette Restorer and here on the TDB. That article taught me a lot about radiator caps. I scanned that article because I got weary of seeing so many "NOS" radiator caps with the small ears and mis-identified caps on eBay.
Keep up the good work, Patrick.

[Patrick H.]

Re: correct radiator cap

Damn right, it is! I learn a lot from the Corvette Restorer and here on the TDB. That article taught me a lot about radiator caps. I scanned that article because I got weary of seeing so many "NOS" radiator caps with the small ears and mis-identified caps on eBay.
Keep up the good work, Patrick.

Someday maybe I'll even finish the two follow up articles....

Patrick