back pressure

i have an 85 chevy with a 350, it has no converters, but i wanna put headers on it and i wanna cut out my glasspacks to make it louder, but im not sure if i have to have back presure or if it will be alright with just striaght pipes any info would be great thanks

I am no expert but I don't think you will have any problems. My 97 has straight pipes but it has the cats. It has had the straight pipes for 30,000 miles with no notice of problems. Also my buddy has a 2001 chevy with same exhaust with no problems concerning back pressure.

I have open pipes...ie.. no mufflers or cats on my 88. Not a problem. I get a SES light now and then, but it's no worries runs GREAT! Sounds GREAT too!!!

I have the same thing as you Matthew, and to keep my SES light from coming on I bought the O2 simulators. Works like a champ :)