Jeep Garage  - Jeep Forum banner

3.7l performance love

259K views 1K replies 83 participants last post by  Tfortony 
#1 · (Edited)
Figured as the 3.7L is the underdog of the engines, and limited to after market support, it would be nice to have one thread of all available performance parts for our wk's. This will be a on goin work in progress with updates, and I need your help as im not god and don't know all. :D

PLEASE ADD TO THE LIST!

AND REMEMBER,... ALWAYS SUPPORT JEEP GARAGE VENDORS!

Throttle body:
fastman- thefastman.com
Flyinryan- flyinryanporting@gmail.com

Tb spacer:
airaid poweraid, part # 310-618 - airaid.com

Intake Manilfold:
FlyinRyan- flyinryanporting@gmail.com

Intakes:
K&N- FIPK intake, part # 63-1545 - knfilters.com
K&N- 77 series, part # 77-1545kp- knfilters.com
Injen- pf series, part # pf5010 - injenairintakes.com
AirAid- part # 310-205 - airaid.com

Tunning/chips:
SCT- email Hemifever@aol.com
SCT- FlyinRyan- flyinryanporting@gmail.com
Jet- stage 1, part # 90701 -jetchip.com
Jet- stage 2, part # 90701S -jetchip.com
Hypertech- power- part # 52001 - hypertech.com
Hypertech- econ- part # 53001- hypertech.com

CYLINDER HEADS:
Knolton thunder- economy- part# knth1-3.7l - Airram.com
Knolton thunder- race - part # knth2-3.7l - Airram.com

Pulleys:
ATI- Super Damper- OEM size (lighter) - part# 918429- atiracing.com
ATI- Super Damper- 25% UD - part# 918428- atiracing.com

Thermostat:
Jet- powertech 180 degree- part# 10177 jetchip.com

Ignition: (anything? msd??)

FUEL Injectors:
Airram- part # arpfms037- Airram.com

Headers:
JBA - jbaheaders.com

Exhuast:
Magnaflow- part # 16834- magnaflow.com
Gibson- part # 17404- gibsonexhuast.com
Gibson- part # 617404- gibsonexhaust.com
Dynomax- part # 19421- dynomax.com

Transmission:
Torque Converter:
APS- part # 37conv- apsprecision.com


Brakes:
Srt8 brakes (see sticky srt-8 conversion parts, about 6 pages deep)
See Brakewarehouse.com for a huge selection of oem, cross drilled/slotted
rotors and pads

Suspension: (i know there is alot more, add!)
See Sticky: The complete (05-10) WK Grand Cherokee suspension thread
Daystar- daystarweb.com
Rock Krawler-
Superlift-
OME-
Rough Country- Roughcountry.com

Diffs: (anyone know diffs, axles or ring and pinions)
Eaton- Detriot Locker, part # 187C179A

Diff Cover:
RuffStuff- part # 825COV- ruffstuffspecialties.com
Riddler - part # RD825- ridlermfg.com
Crane part # 8.25C- cranehiclearance.com
 
See less See more
  • Like
Reactions: Brent Mullins
#1,033 ·
Summitracingequipment.com carries the 3.7 magnaflow mid pipe. They have 2 kinds. The cheaper one is an off road pipe and it will throw codes. The more expensive one is the one to get with the high flows. This will not throw a code. But if you are wondering, the 4.7 one will fit too as it is the same pipe.....

Or you could make one like I did. But you wont be emissions legal unless you weld in cats.
 
#1,035 ·
No. They are the same pipe from the factory. There may be a difference depending on who made it.... for example the magnaflow mid pipe is a true 2.5 inch mid, as are my own fabricated ones.
 
#1,040 ·
This goes back a few pages, Jeff, but when you wrapped your CAI, what'd you wrap it with?

I also found this: "airaid jr tube". It looks like it goes from 3 1/2" down to the 3" to fit the TB!! Got the idea here: http://www.jeepgarage.org/f6/air-resonator-delete-mod-for-3-7-a-3956.html. The Jr is like $125. I *hate* to spend that much when I've already spent almost $300 on the dern thing!!! I coulda spent lass money and gotten the whole thing!!
 
#1,041 ·
This goes back a few pages, Jeff, but when you wrapped your CAI, what'd you wrap it with?

I also found this: "airaid jr tube". It looks like it goes from 3 1/2" down to the 3" to fit the TB!! Got the idea here: http://www.jeepgarage.org/f6/air-resonator-delete-mod-for-3-7-a-3956.html. The Jr is like $125. I *hate* to spend that much when I've already spent almost $300 on the dern thing!!! I coulda spent lass money and gotten the whole thing!!
I used DEI wrap. You can find it at autozone over by the exhaust stuff. Looks like it could work but it also looks like it need minor modification to work right. (Iat sensor?) At least from what I read... oh and the outside da. Of the tb is 2.5 inch. I had a extension on mine from exhaust pipe that was 2.5 id
 
Top