The guys at the auto part store told me that the Felpro1406 is the wrong one because the stock heads should be round not d-shaped. But My pacesetter headers that I'm working on installing are d-shaped. But I havent' finished taking off the manifolds yet to see the shape of the ports on the stock heads.
Any thoughts?

 

they should be d shaped on the head.
i don't know the fel-pro part # for the gaskets though..
i used factory gm gaskets, i had 2 sets of fel pros leak on me.

 

You should know better than to listen to those guys. A guy I know that used to work at Advance Auto said that when they hire people, they would hire someone with less experience over someone who knew a little bit.

Their jobs are to sell parts, not know anything important.

Your heads have d-shaped ports btw

 

Thats sad, but very believable. You always have to remember the #1 rule about autozone... the employees VERY rarely know what they are talking about.

 

I gave up on getting info from chain parts stores...

I recently went looking for some foil heat wrap tape to put around a few wires running near my headers and the guy had no idea what I was talking about. He finally led me to the regular electrical tape, and I again explained what I needed and why. He said "OH, you need HIGH PERFORMANCE tape"...and took me over to the neon, chrome, and colored ty-rap section and was kind enough to locate a roll of BLUE electrical tape for me....

 

1406 is the correct p/n. All I'll ever use. I do agree though, dont listen to anyone in a parts store ESPECIALLY about the LT1. There is no one unless they have one that works at one of those stores who knows anything about it.

 

Thanks! I'll take you guys word for it. D-shaped it is!

 

I had one guy at AutoZone tell me a 160 thermostat was a waste and that it would cut my fuel economy in half. I quietly walked out. At another AutoZone, I told them I needed a colder plug(wasn't sure of part #). I then had to explain what they were for and he kind of smart assed suggested I used better gas. I told him I didn't want to pay for anything over 93 octane in the same tone he used

Idiots.