Anyone know what the correct radiator cap is for a 68 427 Impala. Looking for the original brand and number. I'm assuming AC Delco but not sure of the number... Thank You
Re: Radiator Cap
Posted by DonnyB on 12/23/2021, 8:26 pm, in reply to "Radiator Cap" VIP Member and Board Expert
The correct cap is an RC-15 Glenn. The last use of the RC 13 was in 1964 on non A/C equipped cars. You want the one with the "big" ears and are cad plated. The newer stainless ones with the small ears are not correct for our cars but work fine if you're not super critical about it being spot-on. There are also hollow and solid rivet designs. The repros are really bad, even the ones available fro the Corvette sellers. They look OK, but the spring and construction are piss-poor and they rust out very quickly and leave a rusty mess in your cooling system. You can have an original rebuilt and replated for about 225-250. NOS ones once in a great while can be gotten for 200 +/-, but will usually trade in the on the 350-up range. Good luck with your search.
Re: Radiator Cap
Posted by Glenn on 12/24/2021, 2:30 pm, in reply to "Re: Radiator Cap"
Hey Donny, thanks for all that info ... The cap I have is a Genuine AC Cap but it's an RC41, it fits and it is 15lbs but no ears at all and I think it's for a Cadillac ... Anyway appreciate the super helpful info, now I know what I'm looking for ... Cheers Glenn
Re: Radiator Cap
Posted by B Hinkley on 12/23/2021, 8:20 am, in reply to "Radiator Cap"
Glenn,
Can't be positive, but I think it's 13 lbs...that's what I use with a 4-row radiator. Have a wonderful Christmas down there.
Bill
Re: Radiator Cap
Posted by Glenn on 12/23/2021, 2:41 pm, in reply to "Re: Radiator Cap"
Hey Bill, good to see you are still about. How are you these days? All good I hope. Cheers Glenn
on 12/22/2021, 6:39 pm