View single post by V8 Level II
 Posted: Sat Feb 2nd, 2019 07:35 pm
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V8 Level II

Joined: Tue Dec 5th, 2017
Location: Michigan, USA
Posts: 118
Reputation Points: 843
410customs wrote:
The TMH headers ..... also fit aftermarket aluminum heads.
They may fit some aluminum heads without modification but not all. Both of my aluminum AFR heads needed a little mill time to provide clearance for the collector on the PS and for the flanged joint in the #5 primary on the DS. 

The sides of the original iron head castings have recesses between the external head bolt holes and these accommodate the tightly tucked TMH's. The AFR's have a thicker, flat casting in the same area and that's what causes the interference. 

Not a big deal, just something to check for. If your Al heads have a clearance issue like the AFR's, it should be easier to deal with before the heads are assembled to the block.

Last edited on Sat Feb 2nd, 2019 10:12 pm by V8 Level II

2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals, BW4406 manual T/C
Aussie Locker, Torsen L/S, 4.10's, Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, sway bar discos, Heated seats, Explorer EATC, Trip Computer and consoles

Other rides:
2016 C-MAX Energi (plug-in Hybrid)
2011 Taurus SEL (highway cruiser)
2003 Ranger 2.3L M5ODR1 Regular Cab (drudge)