Dcook i talked to the MAC distributor and he said you can use the manifold gasket

 

does anyone know if MAC Longtubes are "tuned" or the same lenght? and will they fit with a t45 tranny?

 

I have Pacesetters black paint finish, the weren't easy to install. You need to relocate the O2 sensors to the outer side of the collecters.

Hear is a sound clip with these headers, no mufflers with comp cams xe-274

 

ive got MAC LT headers, not installed yet though.

 

I have CAM headers that I got off ebay about 2 years ago for $350 shipped, can't seem to find them for sale anywhere anymore, but i've had a great experience with them. They are made of 304SS and after 2 years of use they still look brand new. The only problem is that one of the headers need to be removed in order to pull the trans. Never been a problem since I pulled the engine/trans out as one. The pypes headers almost look identical to the CAM headers, not sure if they use the same builder or design.

 

Yes, but you can just unbolt the tranny from the bell housing on the t-56, TKO500/600...the t-3650 you can't.

 

The Flowtechs are the same design as the Hooker Super Comp Headers(both made by Holley) granted I never drive mine in rain or any other kind of nasty weather so i didnt mind getting them in the painted black version. The paint however was flacking off so i put them in the blast cabinet then painted them with black ceramic header paint from eastwood

 

dcook, do you have them installed yet?

 

Nope, not yet. I'm putting them on this weekend. I got a set of ceramic coated LT's and a prochamber. Pretty excited to be on the MAC bandwagon

 

Hedman makes good headers for older carb'd motors. Everyone around here is going to say MAC, including me I just picked up a set of MACs for my new motor

Most of what I've seen is the cheaper they are the worse the quality/fit
Cheaper - Pypes
Middle ground - BBK,MAC
Expensive - Kooks,SLP

 

Good point F8L. Being able to have clearance to drop the tranny is nice. The T-3650's bellhousing is connected to the tranny and you have to drop it all in order to do a clutch install. Dumb design.

 

Aren't all bellhousings connected to the transmission?

 

You also have to factor in if you are a manual or auto, not all headers will fit an auto trans. I have Flowtech and love them. The collectors are so far apart that I can drop the tranny without touching the headers

 

Depends on if you are NA or FI. NA I felt a little gain on the butt-o-meter NA.

 

Is the power gain very noticeable

 

You'll have to swap the x pipe out with a shorter one. I would recommend a catted piece. It's quieter in the car and the loss of power over a o/r mid pipe is so minimal. Your ears will thank you.

 

Ya i have an off road x pipe now and flowmaster 40s

 

Huge, especially if you are running an o/r x or h pipe with a straight through muffler setup like SLP.

 

How much of a sound difference is there between stock manifolds and long tubes?

 

I would go Mac if I wanted LT headers

 

SLP is nice fit and finish...never heard complaints about them. I ran BBk's before and didn't have an issue. MAC has a real good fitment now. IIRC, the fitment was bad when they first came out, but have since corrected that issue. I'll be going MAC myself.

 

i have the SLP and love them. never heared anything of Hedmans but its all a personal thing. look up some youtube videos and see what you like/looking for. then go from there.

 

idk much about them

 

The three that I listed are all ceramic coated. I kinda like the Hedmans because they have a lifetime warranty.

 

Mac, BBK or SLP

get stainless and ceramic coated