long tubes - 2003-04 Mach 1 Registry Owners Club

jv7 · 02-24-2013, 08:57 PM

Are lt headers worth the cost on a procharged mach? I believe parts and labor will be around the 1,200 range. Built motor and built 4r75. Currently have a P head but will eventually convert to a D. Thanks.

2k4mach · 02-24-2013, 09:17 PM

id for sure do them with a built motor and a D

311-420 · 02-25-2013, 06:47 AM

The blower will clean the cylinders well all by itself, but the longtubes will keep the heads cooler and allow for more power with less boost.

jv7 · 02-25-2013, 10:42 PM

With a d1 stock headers(manifolds) bassani catted x pipe and dumps and the right amount of boost can I reach 600rwhp?

littlemags · 02-26-2013, 12:04 PM

Quote:

Originally Posted by jv7

With a d1 stock headers(manifolds) bassani catted x pipe and dumps and the right amount of boost can I reach 600rwhp?

not with the stock motor.

Mach828 · 02-26-2013, 12:51 PM

Since you already have a built motor, I wouldn't do it unless you can install it yourself. You want more power, throw a D on it and more boost.

Roy · 02-26-2013, 01:51 PM

The exhaust is real important on a power adder motor. I would do LTs for sure. If stock manifolds are a restriction on a 300 HP motor just imagine how bad of a restriction they will be on a 600 HP motor.

na svt · 02-26-2013, 04:30 PM

Quote:

Originally Posted by Mach828

Since you already have a built motor, I wouldn't do it unless you can install it yourself. You want more power, throw a D on it and more boost.

Quote:

Originally Posted by Roy

The exhaust is real important on a power adder motor. I would do LTs for sure. If stock manifolds are a restriction on a 300 HP motor just imagine how bad of a restriction they will be on a 600 HP motor.

Adding boost to an already "corked" combo is a good way to reduce it's life expectancy. Headers get the spent gasses out of the engine more efficiently and that reduces cylinder temps. Lower temps, longer life.

blown03Mach1 · 02-26-2013, 06:22 PM

Quote:

Originally Posted by Roy

The exhaust is real important on a power adder motor. I would do LTs for sure. If stock manifolds are a restriction on a 300 HP motor just imagine how bad of a restriction they will be on a 600 HP motor.

Same manifolds as the 03/04 Cobra correct?

BTW do it. You will lose some bottom end tq, but the blower will make up for that.

Roy · 02-27-2013, 02:07 PM

Correct. Regardless of how much a 03-04 Cobra with stock manifolds make it will make a lot more with LTs. Thare may be a slight loss of boost but it will always make more power. Power adder mod motors love big exhaust. The only exception is the crossover on a single turbo system. 2 1/2" works better than 3".

jv7 · 03-02-2013, 09:12 PM

What about some good shorty headers? I know not as good as lt's but how much of an improvement over stock?

Roy · 03-03-2013, 08:29 PM

Dont waste your money.

littlemags · 03-04-2013, 04:45 PM

Quote:

Originally Posted by jv7

What about some good shorty headers? I know not as good as lt's but how much of an improvement over stock?

My first pair was a midlength bassani's...go longtubes from the start. Otherwise you will be wasting your $$

Brain · 03-04-2013, 09:09 PM

I have Bassani mid lengths and also do not recommend them.

626socalstang · 03-04-2013, 11:36 PM

I have a D1 with SLP Long tubes/X pipe/Magnapacks I'm making 535 to the wheels

02-24-2013, 08:57 PM	#1
jv7 Registered User Join Date: Jan 2004 Location: Round Rock, TX Posts: 950	long tubes Are lt headers worth the cost on a procharged mach? I believe parts and labor will be around the 1,200 range. Built motor and built 4r75. Currently have a P head but will eventually convert to a D. Thanks.

02-24-2013, 09:17 PM	#2
2k4mach LuLz Join Date: Dec 2003 Location: Cedar Park, TX Posts: 19,294	Re: long tubes id for sure do them with a built motor and a D __________________ 11 Sterling gray GT500 coupe 08 Silver Z06 1058rwhp/1073rwt @ 15psi 14 Silver Q50S Vortech blown 04 DSG Mach 1 (stolen) 03 OW Mach 1 (sitting in a field rotting away)

02-25-2013, 06:47 AM	#3
311-420 Can't be bridled Join Date: Sep 2007 Location: Texas Posts: 7,006	Re: long tubes The blower will clean the cylinders well all by itself, but the longtubes will keep the heads cooler and allow for more power with less boost. __________________ 2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁

02-25-2013, 10:42 PM	#4
jv7 Registered User Join Date: Jan 2004 Location: Round Rock, TX Posts: 950	Re: long tubes With a d1 stock headers(manifolds) bassani catted x pipe and dumps and the right amount of boost can I reach 600rwhp?

02-26-2013, 12:51 PM	#6
Mach828 Dark Knight Join Date: Nov 2009 Location: Albuquerque, NM Posts: 5,759	Re: long tubes Since you already have a built motor, I wouldn't do it unless you can install it yourself. You want more power, throw a D on it and more boost. __________________ Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage

02-26-2013, 01:51 PM	#7
Roy Registered User Join Date: Jul 2005 Location: S.E. Mich. Posts: 3,446	Re: long tubes The exhaust is real important on a power adder motor. I would do LTs for sure. If stock manifolds are a restriction on a 300 HP motor just imagine how bad of a restriction they will be on a 600 HP motor. __________________ https://m.youtube.com/watch?v=xHkA5tBV1RE

02-27-2013, 02:07 PM	#10
Roy Registered User Join Date: Jul 2005 Location: S.E. Mich. Posts: 3,446	Re: long tubes Correct. Regardless of how much a 03-04 Cobra with stock manifolds make it will make a lot more with LTs. Thare may be a slight loss of boost but it will always make more power. Power adder mod motors love big exhaust. The only exception is the crossover on a single turbo system. 2 1/2" works better than 3". __________________ https://m.youtube.com/watch?v=xHkA5tBV1RE

03-02-2013, 09:12 PM	#11
jv7 Registered User Join Date: Jan 2004 Location: Round Rock, TX Posts: 950	Re: long tubes What about some good shorty headers? I know not as good as lt's but how much of an improvement over stock?

03-03-2013, 08:29 PM	#12
Roy Registered User Join Date: Jul 2005 Location: S.E. Mich. Posts: 3,446	Re: long tubes Dont waste your money. __________________ https://m.youtube.com/watch?v=xHkA5tBV1RE

03-04-2013, 09:09 PM	#14
Brain I drive it! Join Date: Aug 2002 Location: Medina, TX Posts: 550	I have Bassani mid lengths and also do not recommend them. __________________ Brain Best 1/4 12.005@111.85 with 1.660 60' Best 60' 1.606 306 rwhp 317 rwtq 06 Mach1 Shootout Bracket 1st Place 06 Mach1 Shootout Super Street N/A 1st Place Sorry Dan, you have to enter the class to win. 05 Mach 1 Shootout Super Street N/A 1st Place 04 Mach 1 Shootout 8.0 ET 1st Place 04 Mach 1 Shootout Fastest Mach 1 04 Turbo Mustang Shootout 3rd Place 12.0 sec

03-04-2013, 11:36 PM	#15
626socalstang Registered User Join Date: Nov 2011 Location: Arcadia, California Posts: 452	Re: long tubes I have a D1 with SLP Long tubes/X pipe/Magnapacks I'm making 535 to the wheels __________________ -You just can't weld all your problems-

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)