mac long tubes and mac prochamber
 

getting the long tubes and mac catted h put on this week, dropped the car off to my gf's dad whos a machanic with his own shop and doing the labor for free!! cant wait to hear it, it will sound great with my flowmaster 40's when i get the car get ill be uploading a sound clip! what kind of gains will i get from the long tubes and catted h?

Depends on what midpipe you had before this and what mods you have now. If you had the stock midpipe and manifolds then Im going to guess 15-20rwhp. If you had an aftermarket then Im going to guess around 10-15rwhp

Are those ceramic coated?
Ask the mechanic, How was the fitment? I almost bought some the other day but i was hesitant on Mac's.

Good luck, should sound great though.

yea i have stock manifolds and midpipe, i also have flowmaster 40's, 410's diablo tune, tb plenum and pi head/intake/cam swap, do you think id feel a differnce? i no the sound would be awsome im puttin a sound clip up when i get my car back

yea ill def ask him i hope i get it on wed, he said headers are a bitch u gota drop the motor n all but yea ill ask him and ill tell ya whats up the fitment

WTF, no you dont have to drop the motor. Hell you can do it with the k member up there too, but I wouldnt. All you have to do is drop the k. Has this guy ever done headers on mod motor before??? http://www.dndgarage.net/macltheaderinstall.htm It helps to have ratcheting wrenches and to remove the starter when bolting up the pass. side header.

Yes, youll feel a pretty good difference with the LT's and midpipe. Im running the same combo right now and I love them. For the track I bolt on the o/r h pipe.

i dont no i dont wana argue with him lol he's dun headers before but not a mod motor but hey its for free and he's been doin it for 40 yrs so im happy about it i cant wait to get it back!

If I was you, Id show him that write up I just posted. Ive done 10+ header installs on these mod motors and dropping the motor is 110% unnecessary and a complete waste of time. He will probably be very thankful.