I got some hedman headers from my buddy for free. They are the HED-68470 for my motor. I have a 1991 Camaro rs 305 w/Holley 4150 650cfm 4brl DP. My question is what would be the best route to go before putting them on. I want a true dual exauhst, but I know there isn't much room with these cars. So if not true dual, what else would get me best performance. I also always liked the sleeper profile, I don't want it to be crazy loud.

 

Order y pipe? Go from there?

 

Depending on the age of the headers, they're either the 3 bolt flange or the slip fit thing. Make sure you get the corresponding y-pipe. I got my headman 68470's from a JY, and they're the older 3 bolt style, so I had to make sure to get the older style y-pipe.

oh, and get the y-pipe from summit or other, p/n 17470 or 17477 IIRC. Make a modification to remove the 2.5" neck down, replace it with a 3" mandrel bend. Then install it with 3" single exhaust all the way back. A dynomax ultra flow welded will complete the install, and you're set.

 

OK