bayer-z28

iTrader: (14)

Ok, Lookin to maybe settle some arguments...

Anyone have Dyno #'s for Mid length headers?

Most of us have them for LT's... Looking for a direct comparison.. Particularly mildly modded w/ MIdS..

NHRAMAN

iTrader: (1)

long tubes will always be the winner--saying that..some mids on some engines will probably be fairly close--but behind in the #'s.....i don't know ANY racecar that does not use LT's..

Ls1CamaroGuy87

iTrader: (7)

bayer-z28

iTrader: (14)

I'm just lookin for #'s for a general comparison... for a DD or for people that just prefer mids.. Not everyone is out for the 'full race' set up.

bayer-z28

iTrader: (14)

bump.....

02SS0384

iTrader: (1)

Unless you can find back to back comparisons on the same vehicle you’re going to have a hard time convincing most that one is better either way. With the difference in dyno number between stock vehicles it would be hard to attribute dyno differences to mids or LTs alone.

john shea

I don't have any numbers but I think it would be minimal.

8GTOKLR

iTrader: (6)

i'll post my dyno numbers
330/338 =Tune, ud pulley, 160 stat and decent catback

360/360 with shorties and bad exhaust gasket + whats in sig

Ditched the shorties and went mids with cermaic catted y + whats in sig will post #' Sat!

If you need a graph of pre cam heads yada yada I can post, it will also have the post cams heads #'s.

I drive everyday and I just went 13@111 in the 1/4.

RAZRS EDGE

iTrader: (1)

If your going to dish out the money, do it right the first time. LT's will always outperform Mids/Shorties. And there is absolutlely no such difference between to two that you can distinguish LT's as a "full race" as comapred to mid-lengths. If you are basing your decision b/c you think LT's are a "full race" setup and don't want something of that kind, that's just retarded.

Buy the LT's or spend the $$ elsewhere.

8GTOKLR

iTrader: (6)

correct but. LT's relocate your O2's so far back you need to go spend 80 bucks a pop just to make sure computer doesnt throw a code. With mids you can still use the stock O2's.

gillbot

iTrader: (27)

I did 399RWHP with MACs and an ORY. I'll give up a few HP for a MUCH better fit anyday.

This is from the exhaust sticky in the external section:
http://ourworld.cs.com/jrpws6/mod+guide/macs+vs+LT.jpg

Black Z/28

I'm running Bassani Mids- ceramic coated. They look good and perform well. I like them a lot. I also have to get through the visual at the emissions station. Sure long tubes will be better for maximum power, but the mids fit in with my goals.

NHRAMAN

iTrader: (1)

WHAT.??? NO one can dispute this fact---ALL RACE CARS have Long Tubes..PERIOD.

jimmyblue

iTrader: (11)

HP numbers don't mean diddly because they only show
you the peak HP, which is always high RPM where the
long, mid, short are all only trying to pass the exhaust
without restriction and resonant scavenging is not in
play. Maybe torque tells more of a story. But still you
stand a good chance of the peak numbers failing to
show how much you improved sub-peak torque, how
fat the curve and how hard you will pull throughout the
gear, not just one point.

Line up the curves and look at the "area" under them,
in the powerband you can expect to occupy. That's
where the difference becomes clear. A lot more to it
than two numbers.

8GTOKLR

iTrader: (6)

With Mids made 396/391 with exhaust unbolted aftercats, the y pipe allows you to do that, its all ball flange mounted

through the muffler made 384/380...with nice torque all through the band so there is your Mids Dyno. Just need a LT Dyno

Bad30th

iTrader: (13)

Read the exhaust FAQ.

There is a posted dyno in there that shows Mac mids to be within 5-8rwhp of long tubes across the board.

Here :



Rob (Bad30th)

gillbot

iTrader: (27)

I still say MACs are heavily underrated.

Blk97WS6

iTrader: (19)

i love mine. and they were VERY easy to install.

INMY01TA

iTrader: (1)

No dyno #s but here's a pic for comparison.

jmm98LS1

iTrader: (28)

I agree, but the reasons to use them over longtubes are rapidly disappearing.
-Macs used to be much cheaper than longtubes (reason I bought 'em), not the case anymore when you can get pacesetters with a REAL ceramic coating for $385.
-Macs are said to have better clearance than lt's, but I found the complete opposite. I switched from macs/ory to pacesetters/duals. I'm lowered ~1.75" and have TONS more clearance now than I did with my macs/ory. The mac y-pipe is where clearance problems arise and that's where I always scraped (I had the y-pipe less than 1/4" from the body too).
-Macs are supposedly easier to install, but I also found that to be way off. The pacesetters were WAY easier to install than the macs....they literally fit so well I had to have my wife hold them in place while I crawled out from under the car or they would have fallen right out.

The difference in sound alone made the switch worthwile to me, let alone everything else I listed.