Needed best 4.6 intake manifold for 97 GT

Ian97GT

New Member
Sep 11, 2019
3
0
1
60
London,Ontario
Hi,
I have a 1997 Mustang GT,4.6 ,owned since new.40 k miles.The intake manifold started to leak at the thermostat.
Went to the dealer, the updated Ford/Motor-craft intake is obsolete and unavailable.
I see Dorman and API makes one but the screws that hold the injectors look weak.
So which aftermarket brand is best? Failing that can I use a Ford PI unit as a straight bolt on ,no other upgrades planned.
Only want to fix it once.
Thanks
 
Last edited:
  • Sponsors(?)


007

Founding Member
Jan 29, 2002
3,287
24
69
Broke
www.steeda.com
Have you considered upgrading to PI heads at the same time. I'm not sure that different manifolds will make much difference with the stock heads.
 

tsemmett

Active Member
Jul 2, 2019
205
29
38
37
US
Eh, Dorman one should be fine. I've got an even cheaper knock off on mine ($135 special off Amazon, same design as the Dorman) and it's actually pretty solid where it counts (COP screw holes are weak, but this car doesn't have COPs). No issues in the 6 months it's been on.

I did try a PI intake on my NPI heads and never could get the coolant ports to seal correctly. If you're going to go that route, get the heads/cams and do it all.
 
  • Like
Reactions: 08GT500

Ian97GT

New Member
Sep 11, 2019
3
0
1
60
London,Ontario
I think whoever makes the dorman and API brand, makes them all.
The hardware is the same, probably from China.
I’d like to find an New ford upgraded one, the one Ford used to repair this issue in the early 2000’s ,but they are sold out/ obsolete
Thanks for your input
 

08GT500

Active Member
Jul 12, 2018
773
111
53
Massachusetts
+1 Tsemmett
Hello Pete,
Ford dropped the ball, there..all 96’-98’4.6L 2V NPI Motors affected.
Haven’t seen one in a while. Looks obvious that 97’ is your pride & joy.
I’d swapped out over 15 in my own shop, including my personal 96’ GT. Ford list was 460$ for that Intake, (2007). Be happy they’re not available now, lol.
I’ve used Ford’s, once backordering, was forced to use the Dorman part, as well as another Mfg. All (3) types functioned appropriately. Upgrade hardware, that’s easily accomplished. I usually replace fasteners.
Only differences between the OE part and Fords response to overwhelming Dealer & Tech coolant leak TSB’s (96’-98’ stock, non PI replacement) was the aluminum coolant crossover.
Remaining Intake material was a revised polymer matrix composite.
Swap is easy and will take an hour or two moving slowly with basic hand tools.
Though appearances suggest it’s a PI Intake, It is not. As suggested above, PI Heads are designed for a PI manifold. Will it fit? Yes. Correctly? No. Present course, you should opt for a 96’-98’ OE replacement.
Something else to consider:
Though more costly, I’d dropped a few links below with information regarding the PI Intake/Head/Cam swap. The motor runs much more efficiently, mileage improves, 50HP gains are not unusual.
Cams have a large role in this, but geared for all driving types.
99’- 04’ factory PI motors have dished pistons yielding a 9:1 C.R. using the same PI parts you’d be adding, while the Compression ratio is at 10.5:1 with 96-98’ Motors, giving an edge on gains.
Stock, 96’s, 97’s 98’s were 210HP, 215HP, 225HP. Same motors, 96’-98’ with a PI swap: 97’’s around 260-270-280 HP. Drivetrain losses aside, you’d still be planting at the tires more HP/TQ than you previously made at the Crank. Better throttle response, mileage, HP/TQ, less emissions...and running all Ford parts.
Around 230HP/290Ft/lbs of Torque, at the wheels. More than the 99’-04’s.
https://www.americanmuscle.com/what-is-a-mustang-pi-engine-heads-or-intake.html


Hope that helps!
-John
 
Thread starter Similar threads Forum Replies Date
N best intake need help to decide Fox 5.0 Mustang Tech 8
B Needing help on the best way to tackle alot of sheet metal replacement 1965 - 1973 Classic Mustangs -General/Talk- 2
chapters707 Engine Best Way To Flush Coolant & Need Help Identifying My Water Pump Hose SN95 4.6L Mustang Tech 7
Jrodstang87 Need Help Choosing The Best Rear Gear 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 14
Crazytrucker74 Need Help... What The Best Differential Carrier? Fox 5.0 Mustang Tech 6
jaketuff Need to replace stock springs... Best Springs for Fox for decent ride? Fox 5.0 Mustang Tech 5
C Need opinions...best looking/closest replice Cobra Rs 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 12
1987stangman Need some help from Stangnet's best SN95 4.6L Mustang Tech 10
M Horrible exhaust leak - Need the best route to fix it. SN95 4.6L Mustang Tech 1
XxMustang281xX Ok, need the best combo.. 1996 - 2004 SN95 Mustang -General/Talk- 13
fivespeedsteed best springs for handling / help with steering, might need new rack 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
Z Best H-pipe need opinions! 1996 - 2004 SN95 Mustang -General/Talk- 9
Kdubslugga New best but need some clutch adjusting tips 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 17
D Best 03 Cobra Terminator heads (Need head experts here!) SVT Tech Forum 5
whatagearhead Need advice on best A/C kit for '70 Classic Mustang Specific Tech 2
OregonMustang 04 Cobra 520lb tq , 510hp = stock clutch destruction...need new one what kind is best Regional Forums and Event Information 30
whyask new rims need best tire size.?? SN95 4.6L Mustang Tech 17
ga289stocker Need drag radial advice w/ stick, new best et Classic Mustang Specific Tech 5
APowers Need help getting the best deal 2005 - 2014 S-197 Mustang -General/Talk- 2
95Cbra5O Need a nice car cover... Whats the best? SVT Tech Forum 4
Steel Best background - Need Advice 2005 - 2014 S-197 Mustang -General/Talk- 1
BigChiefSmokem 4.10's or 4.30's... Need some help, which is best for me? SN95 4.6L Mustang Tech 45
Must-Be-A-Stang Best cam for a stock motor....need a stright answer Fox 5.0 Mustang Tech 47
T best way to pull A MOTOR NEED HELP 1994 - 1995 Specific Tech 17
Foxfan88 best clutch for my needs?? Fox 5.0 Mustang Tech 12
5spd GT Need best head gasket matching for AFR 165's and BBK Longtube 1 5/8's? Fox 5.0 Mustang Tech 6
5spd GT I need a parts store battery (best ampage/cranking amps) that will fit in battery box Fox 5.0 Mustang Tech 20
Caldwell Need the BEST Throwout Bearing out there!! 1994 - 1995 Specific Tech 11
98blackstallion Need cats....Which one's would work best? SN95 4.6L Mustang Tech 12
BLKVERT NEED OPINIONS...BEST TIRES FOR 18X9 & 18 X 10 SETUP????? SN95 4.6L Mustang Tech 13
J Need help picking out the best subframe connectors SN95 4.6L Mustang Tech 8
5spd GT Need valve locks on my AFR 165's...which ones and best way to install them? Rick91GT? Fox 5.0 Mustang Tech 9
B Need tires! What's the best? SN95 4.6L Mustang Tech 23
EvilHorace Carb question, need opinions of best streetable carb? Fox 5.0 Mustang Tech 17
Starscream88 Best place to buy New Valves? Re-Building GT-40 Heads, need Valves! Fox 5.0 Mustang Tech 16
M Need best price on mach1 grille delete SN95 4.6L Mustang Tech 6
C need best online price for a carpet kit, 2002 Ford Mustang SN95 4.6L Mustang Tech 2
H Need a vacume pump?? best deals Classic Mustang Specific Tech 9
0 Best tire for the street and occasional track use? Need everyone’s input please SN95 4.6L Mustang Tech 29
M tired of Nitto dr's, need best hooking street tire SN95 4.6L Mustang Tech 9
1qckFOX Best place to buy a King Cobe Clutch? (quick replies needed) Fox 5.0 Mustang Tech 7
A Need Bolt Sizes and Lengths SN95 4.6L Mustang Tech 0
R need helpful tech help 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 0
8 Fox need recommendations on tires 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 8
F Help needed 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
J Engine Trickflow Intake Street Burner Spacer Needed? Fox 5.0 Mustang Tech 12
D Need sct x4 users help please. Digital Self-tuning Forum 0
E I need help with my AC system 1996 - 2004 SN95 Mustang -General/Talk- 5
G Engine Need help with cooling system issue Fox 5.0 Mustang Tech 12
C Need a pdf of the 1998 Gt factory service manual SN95 4.6L Mustang Tech 0
Similar threads