marky mark

My newly rebuilt 427 BB overheated today at the shop as they were dialing in the carb & timing. They said (I wasn't there, as I would have recommended they put a shop fan in front of the radiator) they worked on it at idle and low rpm for about 30 min. and the temp shot up to 230 and the resovoir tank overflow tube started putting out coolant on the ground. They forgot to look at the temp gauge while they focusing on the motor I guess.

They turnd it off and waited for it to cool down. They topped off the coolant and test drove it and it was fine(stayed around 195-200 or so while the car was moving. This was in scorching Fla. heat. This is similar temp it was running on Wednesdays initial test drive.

My question is this: Is there any cause for concern as far as possible damage done to the motor, heads/gaskets or even seals? I know I sound perhaps overly worried but I get that way about the 'Vette.

any opinions appreciated,

Thanks, mark :confused: :(

lou

If it max out at 230 it will be okay, at that temp, nothing should be damaged. lou

Dalannex

I agree. 230 shouldn't be hot enough to damage anything. :seeya

69Myway

230 is not the end of the world. If you take that car autox, you will hit that half way through and still be taching to the red line.

You might want to look into that though. Portable fan in front or not, it should not boil over sitting at idle. Something is not right, even if the timing is a little retarded or the cap on the pressure bolt is not a high enough pressure. If this is a fan clutch car, the fan clutch may be slipping.

Good thinks to check out before it does go too far and do some damage.

PRNDL

Service manual says cooling system designed for safe operation at temps up to 247 deg !! MJ

marky mark

Thanks to all who answered, I appreciate it!

Regards, mark