ok I'm looking for the best flowing block hugger headers to go an a Chrysler 354 hemi. As far as I have found out I basically have 3 to decide from PAWs, Sanderson or hot heads. What have you used and experienced with them? From what I have read the PAWs seem to have the biggest tubes with a 2in primary to a 3in collector the hot heads 2in primary to 2 1/2 collector and Sanderson are 1 7/8 primary to 3in collector. any thoughts?
The tubes are so short that you would not likely see any difference between them. If the prices are similar then pick the one that 'appears' to be of the best quality-fit-finish. You might also want to consider the truck manifolds... .
I just ordered a set of iron manifold from Hot Heads today for a 354. I'd guess headers would give a little more HP, maybe, but I wanted the quietness and leak-free-ness of manifolds.
I used the headers from PAW made by Hedman they were very nice but I don't think they are available anymore.
One feature of the Hedman Headers is that the exhaust pipe flanges are not as long as some of the other headers and give more room for an instalation in a early frame if you want to mount the engine lower.
My Sanderson header collectors dumped right into the side of my aftermatket oil pan. If you use a stock pan it shouldn't be a problem though. Center sump stock pans may be a problem but not sure.
Good manifolds will make as much power as shorty "headers" and probably have less turbulence (Short Collector).
Patriot also makes a 331-392 Tight Tuck Header. H8204 Raw or 8204-1 Ceramic Coated. With 2" tubes and a 3" collector, they will definitely outflow the cast iron manifolds.
Something new from Hot Heads, waiting to mock up the 354 for my truck before deciding but I'm between these and lakes style. http://hothemiheads.com/new/index.html
My brother has a set of Sanderson on his 354 and they have been on for 10 years and he is happy with them.
the Patriot are nice looking and the price seems OK for coated at 421. The headmen ones from PAW might be slightly tighter!?