GT40 heads intake manifold gasket matching.jpg
368 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
78 hits | 29.97 KB | Posted: 1/24/19
Comp Cams 35-512-8 waiting its turn.

DSCF2650 - head swap supporting parts.jpg
44 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
47 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
57 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
70 hits | 80.69 KB | Posted: 11/16/20
The infamous exhaust port thermactor bump.

DSCF2680 - GT40 dr ported, intake ports.jpg
55 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
49 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
52 hits | 48.89 KB | Posted: 11/16/20
Close-up of one of the exhaust ports.

DSCF2689 - GT40 dr ported, bowls.jpg
56 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
66 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
54 hits | 39.73 KB | Posted: 11/16/20
Exhaust ports.

DSCF2719 - GT40 valves lapped.jpg
69 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
93 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...