I have been told by many people that I have a blown head gasket. My 85 305 tpi overheats all the time no matter the day, IM also not getting any smoke or anything in the oil but the car has no power from idle to 2500rpm,
the timing is also right on and the water pump is working and the radiator to so could I have a blown head gasket and is there anything I can do to tell if I do or not.

 

Depending where the gasket may have blown creates different results. Usually it goes into the coolent. When the engine is running, take the rad cap off. If there's bubble in the coolent especially when you rev it up then you either have a bad head gasket or a cracked head. This usually also causes the rad to overflow when driving around. Rad pressure is 15 psi. Cylinder pressure is usually 150 psi.

You could do a compression test. If a cylinder is low then try putting compressed air into like you were going to change valve springs. If it pressurizes the rad also then there's a problem. The only way to find out exactly what's wrong is a teardown.

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87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

 

If i took it to shop would they beable to tell what the problem is

 

If it is a cracked head can i put 350 heads on it and would that make any power increase

 

Depends how good the shop is at diagnosing the problem.

350 heads on a 305 will drastically reduce the compression ratio.