MAC Longtube install pics...does this look correct???

Dr. Wu 2000 · Nov 17, 2006

Installed MAC LT's this weekend after the install I find that the headers are not hanging down at the same level.... I took a couple pics to show you guys what it looks like. I automatically thought there is no way the midpipe will bolt up to the header on the passanger side but we got under there and it seems it will just make it with some tweaking. Just seems that the they should be close to the same down where the collector bolts to the midpipe. Take a look and tell me what you guys think.

View attachment 423494

View attachment 423496

DMAN302 · Nov 17, 2006

At this point all you can do is attempt to put in the mid pipe and if the header bolts are all in place...it either fits or it doesn't.

tunedin302 · Nov 17, 2006

Maybe I'm crazy but that looks way off. did you compare them side by side before you put them in? Have the heads ever been off? what heads are you using?

89lxcoupe · Nov 17, 2006

looks to me like the pass side is for a 302 and the drivers side is for a 351 thats weird ! my bbk longtubes look pretty strait across, what h or x pipe you using hopefully a mac also ! does the h or x pipe look twisted whe nyou go to bolt it up !

96SVTpilot · Nov 17, 2006

How old are your motor mounts? Maybe you have some sagging on the drivers side.

89lxcoupe · Nov 17, 2006

if you look at the front of his oil pan the motor is sitting level, so i dought his motor mounts are the problem. are the headers new !

Dr. Wu 2000 · Nov 17, 2006

Headers are brand new out of the box....heads are TF Twisted Wedge.... the midpipe we THINK will bolt up, it is also MAC and we lined it up and it seems it will fit but it will be a bitch. It just doesn't look like it should hang that different from the other.... also noticed that the clutch cable is laying right on the driver side header, that should be fun too. I am seriously considering pulling them off and re-installing the BBK equal lengths.

DMAN302 · Nov 17, 2006

LT's will come in contact with the clutch cable on Mac style..I use a thermal wrap from the auto parts store on the cable itself.

89lxcoupe · Nov 17, 2006

yeah they just don't look right. well if your short h pipe sits flat on the ground and isnt twisted to match the headers then its your headers ! my short bbk h-pipe is flat, i'd call mac !

MrKwik · Nov 17, 2006

Looks like they matcg the humps in the trans crossmember to me. I bet one just hangs lower by design.

Dr. Wu 2000 · Nov 17, 2006

DMAN302 said:
LT's will come in contact with the clutch cable on Mac style..I use a thermal wrap from the auto parts store on the cable itself.

I have some heat jackets coming in for up top on the headers. How well does the heat wrap work to protect the cable??? Any melting going on???

DMAN302 · Nov 17, 2006

Seems to work nicely, I tie wrap the heat wrap to keep it in position.

89-notchback · Nov 17, 2006

Is there different partNos. for the auto and the 5 speed?, looks like the drivers side would hang lower to clear the auto trans becuse of linkage,pan etc.? I'm pretty sure Mac is the only one that makes longtubes to fit the auto trans.

postalbunny · Nov 17, 2006

might want to call them... i bet the auto ones have one that hang lower or something. My bbk manual long tubes hang even. Buts that's bbk, and for a manual

SMOKEDYA · Nov 17, 2006

Thats weird? My macs line up perfect?

peace

john

Roland69 · Nov 17, 2006

^^^ your car is darn clean underneath

Dr. Wu 2000 · Nov 18, 2006

They are coming off fella's. I am reinstalling the BBK equal lengths and contacting MAC about problem. I was a little leary of putting LT's on anyway because of the clutch cable issue and also the starter heat soak problem that can occur....maybe this is someone's way of telling me don't do it or you will have problems down the road with other stuff. I have to think I am leaving some power on the table without the LT's but not dealing with all the other issues may be worth it. We will see. I will let you all know what MAC says about the fittment issue..... Thanx for all your responses.

DMAN302 · Nov 18, 2006

Sorry to hear that...I KNOW all to well what a pain the install can be (just did a remove/reinstall for coating purposes with my MAC LT's). I hope everything works out, keep us posted on Macs response.

SMOKEDYA · Nov 18, 2006

Roland69 said:
^^^ your car is darn clean underneath

Thanks it has 140xxx miles on it also. You shoulda seen my 55xxx mile 95 gt i had.I traded it for the coupe in the pic. peace

john

blackened88lx · Nov 18, 2006

SMOKEDYA said:
Thats weird? My macs line up perfect?

peace

john

They look off like his to me

MAC Longtube install pics...does this look correct???

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