moparvinny
Well-Known Member
For sale are pair of freshly ported 340 X-Heads. The heads are ready to be bolted onto your small block Mopar engine. The heads were ported/assembled by a well known facility in Metro Detroit.
Below is a breakdown of the work that has been completed. Please note the heads have never been installed on an engine following the porting/reassembly processes.
Baked blasted and magnafluxed heads (no issues)
All tapped holes were chased
CNC Porting - intake ports / exhaust ports and chambers
Installed guide liners in the intake and exhaust guides
Installed harden seats in exhaust for unleaded fuel
Cut spring pockets to remove ID step
Cut for valve seals - cut top of guide for seals
Milled exhaust face - fly cut exhaust surface
Performed valve job - cut intake and exhaust seats and grind plus back cut valves (2.02/1.625)
Milled deck - 70cc
Installed freeze plugs
Washed and assembled heads with the following:
10-degree steel retainers
Comp Cams 10-degree 11/32" with no lash caps recess
Comp Cams dual valve springs 1.437 OD, 322 lbs./in. rate, 1.150" coil bind height
Comp Cams valve spring locator, steel, hardened, 1.500" outside diameter, 0.060" thick (set of 16)
Installed Manley valves - exhaust (stainless steel: 1.625", diameter: 0.3415", stem: 5.065" length)
Installed Manley valves - intake (stainless steel: 2.020", diameter: 0.3415", stem: 5.040" length)
If you have any questions, please let me know.
Location: Metro Detroit
Price: $2,700.00
View attachment 1715630551
View attachment 1715633108
Below is a breakdown of the work that has been completed. Please note the heads have never been installed on an engine following the porting/reassembly processes.
Baked blasted and magnafluxed heads (no issues)
All tapped holes were chased
CNC Porting - intake ports / exhaust ports and chambers
Installed guide liners in the intake and exhaust guides
Installed harden seats in exhaust for unleaded fuel
Cut spring pockets to remove ID step
Cut for valve seals - cut top of guide for seals
Milled exhaust face - fly cut exhaust surface
Performed valve job - cut intake and exhaust seats and grind plus back cut valves (2.02/1.625)
Milled deck - 70cc
Installed freeze plugs
Washed and assembled heads with the following:
10-degree steel retainers
Comp Cams 10-degree 11/32" with no lash caps recess
Comp Cams dual valve springs 1.437 OD, 322 lbs./in. rate, 1.150" coil bind height
Comp Cams valve spring locator, steel, hardened, 1.500" outside diameter, 0.060" thick (set of 16)
Installed Manley valves - exhaust (stainless steel: 1.625", diameter: 0.3415", stem: 5.065" length)
Installed Manley valves - intake (stainless steel: 2.020", diameter: 0.3415", stem: 5.040" length)
If you have any questions, please let me know.
Location: Metro Detroit
Price: $2,700.00
View attachment 1715630551
View attachment 1715633108
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