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#4124352 - 10/14/21 04:26 PM Supporting Mods for MHS Stage 2 Cams?
tc092 Offline
n00b

Registered: 09/18/20
Posts: 39
Loc: NY
I'm thinking of getting MHS Stage 2 Cams. I've already done a 3.55 rear axle swap; P71 intake, dual exhaust, and aluminum driveshaft; BBK 70mm throttle body; Trick Flow 75mm plenum; and a Marty tune. I expect I need the tune updated, so that's not a huge issue. Jmod is on the list to get at some point. Are there any other supporting mods I'd need (e.g., torque converter)?
_________________________
2008 Mercury Grand Marquis GS. ~120K miles. 3.55 Trac-Lok rear, aluminum driveshaft, P71 airbox, BBK throttle body, Trick-Flow intake plenum, Marty tune, P71 dual exhaust, HAP rear springs, Cadillac 4-note horns, leather interior swap, aftermarket radio head unit w/ bluetooth adapter, aftermarket speakers and subwoofer, Continental cubby armrest, carpeted trunk organizer, smoked P71 taillights, bumper tuck, full-size spare.
Pending Mods: 18-spoke 17" wheels.


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#4124376 - 10/14/21 08:03 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
dixiebandit69 Offline
5.4 Club
Member

Registered: 01/17/12
Posts: 340
Loc: Texas
Upgrade your valvesprings, and change your valve seals while your at it.
_________________________
2007 Grand Marquis LS: 5.4 swap, 9.9:1 compression ratio, Comp XE268s, NPI pistons, PI heads ported by me, Accufab upper plenum, 75mm DBW throttle body, Factory PI intake with Chinese spacers, CVPI dual exhaust, CVPI torque converter, CVPI air-box and zip tube, J-Mod, 3.55 gears, FMS Trac-Loc differential
17" Dorman CVPI steelies, BFG Comp T/A 255/45 R17s

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#4124580 - 10/16/21 01:28 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
Big_Pimpin Offline
Rookie

Registered: 11/12/20
Posts: 70
Loc: NC
Stall converter needed for stage 2 cams IIRC. Head porting would be very beneficial. If you were to port the heads then might as well get long tube headers at this point.
_________________________
2009 Grand Marquis. Dual exhaust w/x-pipe and Dynomax mufflers,3.55 LSD with aluminum driveshaft, ADTR intake pipe and ported plenum with modified airbox, MO's tune.

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#4124696 - 10/17/21 02:23 AM Re: Supporting Mods for MHS Stage 2 Cams? [Re: dixiebandit69]
Colt604 Offline
n00b

Registered: 02/15/20
Posts: 17
Loc: Arizona, USA
Originally Posted By dixiebandit69
Upgrade your valvesprings, and change your valve seals while your at it.


The MHS Stage 2 Cams description says upgrading the springs isn't required if they are degreed properly. I do agree with you on upgrading them while you have the valve covers off to be on the safe side.
_________________________
2004 Mercury Grand Marquis GS
-2.5" catback, stainless steel, dual exhaust with H-pipe - Flowmaster Super 10 mufflers.
-Ford Trac Lok differential, 3.73 gears, 31 spline axles, CVPI aluminum driveshaft.
-Marty tune.


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#4124768 - 10/17/21 04:41 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
tc092 Offline
n00b

Registered: 09/18/20
Posts: 39
Loc: NY
I would have MHS degree the cams, so springs would be a nice-to-have but not a need-to-have at that point, right?

Any recommendations on a torque converter? I'd imagine I'd need something with a higher stall than the P71 converter, right?

I need to be able to pass a NY emissions inspection, so while long tubes would be nice, I'd imagine I'd have to pay a premium to have ones with cats, right?

Thanks for the feedback so far!
_________________________
2008 Mercury Grand Marquis GS. ~120K miles. 3.55 Trac-Lok rear, aluminum driveshaft, P71 airbox, BBK throttle body, Trick-Flow intake plenum, Marty tune, P71 dual exhaust, HAP rear springs, Cadillac 4-note horns, leather interior swap, aftermarket radio head unit w/ bluetooth adapter, aftermarket speakers and subwoofer, Continental cubby armrest, carpeted trunk organizer, smoked P71 taillights, bumper tuck, full-size spare.
Pending Mods: 18-spoke 17" wheels.


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#4124780 - 10/17/21 06:35 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1761
Loc: Leon County
Depends on how much you think you'll be revving it out to. If you ride it out much past 5500 or so frequently I'd do the valve springs if only for the peace of mind. No point in adding to the odds of throwing a rocker and fecking up a perfectly good cam or valve cover
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

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#4124788 - 10/17/21 09:37 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
dixiebandit69 Offline
5.4 Club
Member

Registered: 01/17/12
Posts: 340
Loc: Texas
Originally Posted By tc092
I would have MHS degree the cams, so springs would be a nice-to-have but not a need-to-have at that point, right?


Don't be a dumbass, just replace your springs and seals while you have the chance.
The high performance game isn't cheap. But valve springs are not that expensive.

Originally Posted By tc092
Any recommendations on a torque converter? I'd imagine I'd need something with a higher stall than the P71 converter, right?


I think a CVPI converter will work for you nicely.
Just find a good new or reman unit, and you should be good.

I forgot to mention that you should do the J-Mod before you do anything else on these cars. Or any Ford with a 4R7OW.

I am not joking around, it's a night and day difference in the daily driving experience, and it increases the life of the transmission.

It's cheap, it's easy, it makes the car faster, SO DO IT.


Edited by dixiebandit69 (10/17/21 09:43 PM)
_________________________
2007 Grand Marquis LS: 5.4 swap, 9.9:1 compression ratio, Comp XE268s, NPI pistons, PI heads ported by me, Accufab upper plenum, 75mm DBW throttle body, Factory PI intake with Chinese spacers, CVPI dual exhaust, CVPI torque converter, CVPI air-box and zip tube, J-Mod, 3.55 gears, FMS Trac-Loc differential
17" Dorman CVPI steelies, BFG Comp T/A 255/45 R17s

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#4124946 - 10/19/21 06:29 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
tc092 Offline
n00b

Registered: 09/18/20
Posts: 39
Loc: NY
Any particular specs or recommendations for the valve springs? Any part number recommendations I should be on the lookout for with respect to the torque converter?

And on the subject of "while you have X out, also do Y" are there any other things that are worthwhile to be doing? For example, I'd imagine doing the rear main seal wouldn't be a bad idea while the trans is out for the TC, right?
_________________________
2008 Mercury Grand Marquis GS. ~120K miles. 3.55 Trac-Lok rear, aluminum driveshaft, P71 airbox, BBK throttle body, Trick-Flow intake plenum, Marty tune, P71 dual exhaust, HAP rear springs, Cadillac 4-note horns, leather interior swap, aftermarket radio head unit w/ bluetooth adapter, aftermarket speakers and subwoofer, Continental cubby armrest, carpeted trunk organizer, smoked P71 taillights, bumper tuck, full-size spare.
Pending Mods: 18-spoke 17" wheels.


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#4124988 - 10/19/21 09:27 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1761
Loc: Leon County
I’ve got a set that someone sent me with my cams, haven’t opened the box so idk if they’re factory or not but if you want to shoot me a PM you can have them for a negligible amount and the ride if they’re not stock. Since you’re already going to have the top end open may not be a bad idea to have those heads ported or swap a set of ported heads on
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

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#4125452 - 10/23/21 02:48 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
Big_Pimpin Offline
Rookie

Registered: 11/12/20
Posts: 70
Loc: NC
When I was gung ho about major mods I didn't want to spend big bucks for a name brand converter on a 135k mile tranny and have it eventually go boom taking my $$$ converter with it so I ordered a reman converter for a Mercury Marauder. Supposed to have more stall than a 2v application. Yep, it is still sitting in the box on the floor.
_________________________
2009 Grand Marquis. Dual exhaust w/x-pipe and Dynomax mufflers,3.55 LSD with aluminum driveshaft, ADTR intake pipe and ported plenum with modified airbox, MO's tune.

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#4125522 - 10/24/21 12:52 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
Colt604 Offline
n00b

Registered: 02/15/20
Posts: 17
Loc: Arizona, USA
Originally Posted By tc092
Any particular specs or recommendations for the valve springs? Any part number recommendations I should be on the lookout for with respect to the torque converter?

And on the subject of "while you have X out, also do Y" are there any other things that are worthwhile to be doing? For example, I'd imagine doing the rear main seal wouldn't be a bad idea while the trans is out for the TC, right?


MHS Stage 2 Valve Springs may be a good idea.

https://www.modularheadshop.com/i-24493869-mhs-600-lift-stage-2-pi-valve-springs.html
_________________________
2004 Mercury Grand Marquis GS
-2.5" catback, stainless steel, dual exhaust with H-pipe - Flowmaster Super 10 mufflers.
-Ford Trac Lok differential, 3.73 gears, 31 spline axles, CVPI aluminum driveshaft.
-Marty tune.


Top
#4125590 - 10/24/21 11:05 PM Re: Supporting Mods for MHS Stage 2 Cams? [Re: tc092]
dixiebandit69 Offline
5.4 Club
Member

Registered: 01/17/12
Posts: 340
Loc: Texas
Originally Posted By tc092
Any particular specs or recommendations for the valve springs? Any part number recommendations I should be on the lookout for with respect to the torque converter?

And on the subject of "while you have X out, also do Y" are there any other things that are worthwhile to be doing? For example, I'd imagine doing the rear main seal wouldn't be a bad idea while the trans is out for the TC, right?


Yes, change your rear seal while the transmission is out. I usually do.

I used Comp valvesprings with my XE268s.

Right now, RockAuto has some Melling valvesprings that have even better specs than Comp for a MUCH better price.

P/N 466554
_________________________
2007 Grand Marquis LS: 5.4 swap, 9.9:1 compression ratio, Comp XE268s, NPI pistons, PI heads ported by me, Accufab upper plenum, 75mm DBW throttle body, Factory PI intake with Chinese spacers, CVPI dual exhaust, CVPI torque converter, CVPI air-box and zip tube, J-Mod, 3.55 gears, FMS Trac-Loc differential
17" Dorman CVPI steelies, BFG Comp T/A 255/45 R17s

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