Adam, It's best to use the correct radiator cap, which is a 15 pound cap. Both that and the gas cap are available from the DMC vendors for reasonable prices. Houston prices (www.delorean.com): 101977 radiator cap 4.95 110129 gas cap 9.98 above is per their web site. PJ Grady's prices are similar per their web site at www.pjgrady.com In the case of the radiator cap you can get them easily enough from local places if that's what you really want to do. The cap is an AC part no. RC15 available from any Chevy dealer. It was used on '68-'72 corvettes as well as on a lot of other 60's through 80's V-8 models from Chevy. I bought a Stant replacement cap a while back when I need one in a hurry from Pep Boys. Just look up the above 'vette and you'll get the correct 15 lb cap. I don't have a cross ref on the gas cap and would recomment getting it from Grady, Houston or one of the other vendors. I think the DMC dealer prices are actually less than I paid at Pep Boys for the radiator cap, but I needed one that day. Mark N VIN 6820 At 07:19 AM 1/9/2003 -0000, you wrote: >I recently got a new radiator cap and installed it. It is rated at 16 >lbs, and I am curious if this could cause any sort of problems. The >previous owner had a 14 lbs radiator cap. > > >Also, can anyone recommend a good gas cap? I don't need a locking cap >since I have an '83 hood. I think the cap is worn out and not keeping >pressure, it never gives the pressure release when the cap is >removed, and the rubber seal is is cruddy. > >thanks, >Adam