Pro Mouse

iTrader: (15)

I think I am Going to Do the MTI 5.3 S2 and X1 cam.I was Thinking of switching my Mac Headers to Pacesetters Lt's But I was told that the gains wouldnt be worth the Money?I dont want to spend another $700.00 for Hookers ect.... That puts me out of my BudgetMaybe I should stay with the Macs until they puke?What Should I do?

Ryan04Silverado

AS long as the MACs are LT's, there is no real benefit. If the MACs are mid's or shorties, you should swap them out with LT's. From what I understand, the Pacesetters are pretty much the same design as the Hookers.

98SS Blackattack

You will gain alittle low end TQ with the LT's but no Max hp or high end. With your converter it wouldnt be worth it. IMO

maddboost

iTrader: (11)

Hell yea ditch those Mac headers. While you wont see much if any peak HP jmx who runs LS1HOWTO.com says he picked up as much as 40 ft tq under the curve.

SilverSurfer

Stay with the Macs. There's been a few header tests in mags like Hot Rod, Car Craft, Pop Hotrodding where the mid-length or 3/4 length headers made more torque an HP than long tubes, to the editors' surprise. I doubt you'd ever see 40 lb/ft of torque under the curve going from Macs to LTs. Hell, you don't even get 40 lb/ft of torque when going from stock manifolds to LTs.

TruBloodTransAm

iTrader: (24)

i don't think they make Mac's in LT's, i think they only come in shortys and mid lengths

silverTA

stay with mac's
when u get ur H/C ,tunning get asp pully and ported TB ,,if money left get the LT's

Benjamin Russick

iTrader: (1)

Stay with the MACs unless you absosutely have to wring the last few HP out of your combo. There are guys in the 10s with MACs and with a little weld grinding and collector work, they will flow damn close to LTs. You won't get the substantial low end gain of LTs, but you'll have saved over $500.

maddboost

iTrader: (11)

Whos in the 10s with MACs?

Jim Mills

I know Chris Pippy is running Mac headers and he's run 11.15 and that's a 360 with Stage 1 heads and a 230/230 camshaft.

Pro Mouse

iTrader: (15)

Hey Thanks guys,I am still pondering this,Maybe Hookers

Benjamin Russick

iTrader: (1)

My bad, I meant 11s. I was typing and not thinking... Seriously tho, MAC makes a good street header that is perfectly adequate for the strip too. The only reason I went to LTs was because I had a specific HP # I wanted to hit. Thanks for catching my faux pas...

AKRA

If I was you I would just do the heads. You might see another 10 hp with long tubes and another 5 hp with the X1 cam over your 224 cam. With what you have allready you should be into the elevens no problem.

Good luck.

Al

SilverSurfer

Cartek uses Macs on their F-bodies. Big Mike runs deep in the 9s on spray with them. I believe there are others.

Benjamin Russick

iTrader: (1)

I think Raughammer got near the 10s with MACs as well. They are a good header...

Mike K.

I say keep the macs,

Ryan04Silverado

I didnt know that. Thanks for the info.


I have always read that LT's are better in the long run in regards to the exhaust for the LS1. But if they work for you, cool. If it aint broke, dont fix it!!

maddboost

iTrader: (11)

Big Mike has run 9s with his Macs. But he has a custom y pipe to a cutout so hes doenst have a run of the mill setup. You could probably find Hookers used pretty cheap. Mine are uncoated and have had them for over a year and they dont have a spot of rust and I live in Chicago.

SilverSurfer

Yeah, but the regular Macs should work fine for him right now. Long tubes aren't all that. My Pacetters are good, but the damn Y-pipe bangs the floor.

maddboost

iTrader: (11)

Cheap headers what do you expect? My Hookers never banged in the year ive had them.