my '58 Chevy SB 283 wasnt running right so i started looking for the problem. it turns out that i needed to replace the timing chain. i ordered one from Jegs and I installed it. Great the engine turned over and started. now my problem is that i ran it for no more than 3-5 mins and the temp went up over normal and the radiator started steaming out the pressure release on the neck. could this be the result of a faulty rad cap? i read that that is what keeps anrifreeze/water from boiling. also i saw on some T.V. show that there could be an air pocket or something...? that was on a brand new engine though. oh yeah the rad cap hasent be replaced in probably 12 years or more. could something that small be the problem? anything will help thanks.
mike