You are browsing camaro6 
12-17-2023, 11:05 AM
|
#1 |
  Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
|
Extrude Hone OEM Manifolds
Anyone try extrude honing the OEM exhaust manifolds?
I'd like to stay with the OEM setup due to visual/emission restrictions and realize the manifolds and likely more so, the inlets to the cats are my next limiting factor. Amazing the engine makes 650 HP thru that tiny openning especially on the driverside... Extrude honing used to be advertised a good bit, but don't hear about it much now. I realize a set of tubular headers is the optimum answer... Thanks.
__________________
|
|
|
|
12-17-2023, 11:14 AM
|
#2 |
       Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: Gapplebees
Posts: 3,092
|
No one uses this anymore. I think it would be a waste of money on exhaust manifolds.
|
|
|
|
|
12-17-2023, 02:33 PM
|
#3 | |
 
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,755
|
Quote:
__________________
2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
|
|
|
|
|
|
12-17-2023, 03:51 PM
|
#4 |
Drives: 2021 1SS 1LE Join Date: Nov 2020
Location: 98548
Posts: 612
|
SPD makes them for the Coyote F150 and they are pretty darn good. Quite a few people got fed up with false knock codes and these offer performance very close to headers, while maintaining OEM type fitment.
Dyno test on Whipple F150 - https://youtu.be/QywHE9T0DW0?si=NtpAOz-vrDUHxtzE
__________________
Follow my build - https://www.camaro6.com/forums/showthread.php?t=594295
|
|
|
|
|
01-18-2024, 01:54 PM
|
#5 |
|
Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
|
Appreciate the replies. I came across a hand porting service:
https://socalporting.com/ They do Camaro manifolds as well...$400 which seems reasonable for the hand porting it requires. I do agree the cat entry's appear to be a significant choke point which this doesn't address.
__________________
|
|
|
|
|
01-18-2024, 02:57 PM
|
#6 |
|
Petro-sexual
|
These are mostly tubular, except the flanges, so there isn't much to extrude. I'd listen to Josh' and check out that post from swisstyphoon. If I recall - he ported the cat' flanges, mounted the manifolds to fixtures, and replaced the squashed pipes with larger-round pipes. I'll be looking into this some day, too.
__________________
 '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs |
|
|
|
|
|
|
|
|
Post Reply
|
|
|
