GT40 heads intake manifold gasket matching.jpg
323 hits | 39.67 KB | Posted: 10/28/18

Gasket matching the GT40 heads (top) to the truck EFI intake manifold (bottom).
Comp Cam - b.jpg
63 hits | 29.97 KB | Posted: 1/24/19

Comp Cams 35-512-8 waiting its turn.
DSCF2650 - head swap supporting parts.jpg
25 hits | 44.78 KB | Posted: 11/16/20

The supporting parts stash has grown significantly as porting [finally] nears completion.
DSCF0386 - int and ext bowls before and after.jpg
32 hits | 84.89 KB | Posted: 11/16/20

Intake/exhaust bowls, before and not-quite-after porting. Most notable is how needlessly thick the ...
DSCF0393 - exhaust bowl casting slop.jpg
34 hits | 61.19 KB | Posted: 11/16/20

Lots of casting slop for carbon to grab hold of.
DSCF0285 - exh port before thermactor bump shave.jpg
53 hits | 80.69 KB | Posted: 11/16/20

The infamous exhaust port thermactor bump.
DSCF2680 - GT40 dr ported, intake ports.jpg
30 hits | 20.43 KB | Posted: 11/16/20

Intake ports done. I didn't get super aggressive with the pushrod bulges, opting instead to just le...
DSCF2681 - GT40 dr ported, intake port.jpg
35 hits | 40.49 KB | Posted: 11/16/20

Close-up of one of the intake ports. You can see the walls aren't perfectly flat, but I didn't want...
DSCF2686 - GT40 dr ported, exhaust port.jpg
32 hits | 48.89 KB | Posted: 11/16/20

Close-up of one of the exhaust ports.
DSCF2689 - GT40 dr ported, bowls.jpg
41 hits | 46.73 KB | Posted: 11/16/20

Intake/exhaust bowls ported. The valve throat has been opened up as far as I dared go on the exhaus...
DSCF2691 - GT40 dr ported, bowls.jpg
48 hits | 39.36 KB | Posted: 11/16/20

I also smoothed out the EGR passage's transition on each head.
DSCF2705 - GT40 pass ported - exhaust ports.jpg
39 hits | 39.73 KB | Posted: 11/16/20

Exhaust ports.
DSCF2719 - GT40 valves lapped.jpg
53 hits | 27.73 KB | Posted: 11/16/20

Valves lapped ... plus a little flash rust from the water leak test. They all seem to seal well eno...
DSCF0417 - intake gasket matching, injector boss depth.jpg
68 hits | 67.54 KB | Posted: 11/17/20

Playing around with the old lower manifold to see how much material can be removed for gasket matchi...

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