BBC exhaust header gaskets

Lew Silverman · 08-22-2011, 10:29 PM

I've been experiencing a problem with my header gaskets blowing out on my '88 R20 Suburban with the 454/T-400. I'm using Hedman Super Huslers with thick flanges and the high temp coating. I'm towing a 21 foot steel deck trailer with about 4200 lbs of race car and equipment. I've attempted to cool the motor down with a thermostat change, and it normally runs about 180 -190 degrees under load. I've tried a number of gasket types, but after a few weeks or so, I'll get a section of gasket blown out!

Has anyone had a similar experience? Any recommendations on a type or brand of gasket you've had any luck with?

Thanks for your help!

Lew

08-22-2011, 10:29 PM	#1
Lew Silverman VIP Member Join Date: Mar 2010 Location: Newport News, VA Posts: 1,438 Likes: 372 Liked 129 Times in 59 Posts	BBC exhaust header gaskets I've been experiencing a problem with my header gaskets blowing out on my '88 R20 Suburban with the 454/T-400. I'm using Hedman Super Huslers with thick flanges and the high temp coating. I'm towing a 21 foot steel deck trailer with about 4200 lbs of race car and equipment. I've attempted to cool the motor down with a thermostat change, and it normally runs about 180 -190 degrees under load. I've tried a number of gasket types, but after a few weeks or so, I'll get a section of gasket blown out! Has anyone had a similar experience? Any recommendations on a type or brand of gasket you've had any luck with? Thanks for your help! Lew __________________ Lew Silverman #2070 "The Wagon Master" N/SA