Hi to all, this is my first post but not the first and only muscle car.

Couple of weeks ago, i had traded my 1974 z28/LT to a 87Iroc Z28.

Head gasket was blown, also there was a cooper radiator on it which was repaired previously. Since I live in overseas, gathering parts is not easy both cost and time. I was a AL core, plastic tank A/T radiator, laying down which is suitable size but designed for closed circuit cooling ie/ doesnt have a cap on radiator.

I have installed it on its original place, connected hoses, the are 2 expansion hoses in the new rad. one for expansion, 2nd for return. I have connected 1st expansion hose to original (3rd gen) expansion tank, 2nd to the heater hose return...started the car for a short time after the gasket renew (mufflers wasnt connected yet) there is no problem so far but after the heating up what shoud I expect? is the original cap on expansion cap good enouh to build pressure inside the colling system or somethins wrong on my setup?

Thanks.

 

23 wieving and no answer?

shortly, does oem expansion tank cap good enough to build pressure on cooling system?