Classic Inlines has made arrangements with local shop that specializes in custom cylinder head work, and as such we now offer professional cylinder head porting, three angle valve jobs, and cylinder head assembly for our aluminum cylinder heads.
IMPORTANT ORDERINGINFORMATION:
If you are ordering a ported cylinder head, please include the following information; deck height, bore size, gasket thickness, desired C/R and RPM range, cam specs, type of transmission, type of induction, rear gear ratio, intended application (use),
and any other pertinent information that might help us. All prices are labor only, parts extra unless otherwise noted. Thank you.
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Description and Pricing
(parts extra - labor only) |
Stage 1 - Surface Milling & CC |
$150.00 |
Includes surface milling the cylinder head and sizing the combustion chambers so the CC's of the cylinders are of equal volume, hence keeping the C/R equal. The higher the compression ratio is, the more critical this becomes. |
Stage 2 - Basic Street Porting |
$250.00 |
Includes a light clean up and polishing, blending from the valve seat into the port bowl area, gasket port matching of both the intake and exhaust ports, multi-angle valve job,
and cylinder head assembly. Springs, seats, retainers, locks, and seals are extra. |
Stage 3 - Performance Street Porting |
$500.00 |
Includes Basic Street Porting above, plus fully radius'd exhaust seat profiles, sizing of critical areas for the specific engine build-up and rpm level. This enhances the air flow and velocity in street/strip applications, providing the best performance level possible. |
Stage 4 - Street/Strip Porting |
$950.00 |
Includes Street/Strip Porting above, plus fully ported and polished ports, contouring of the guide boss areas, fully blending the combustion chambers, and increased port cross sectional areas. Intended for race use only, maximizing wide open throttle. |
Stage 5 - Full Race and Custom Porting |
By Quote |
"Maximum Effort" - Includes all of the work above plus modifications based on the specific application. Modifications may include relocation of valve seat pockets, the installation of larger valves and/or copper alloy seats, custom welding and build up of the ports, and so on. Achieve the full performance potential for your application. |
Company Experience |
| The shop is fully equipped with a 400cfm flow bench for measuring airflow and velocity, a Quickway guide and seat machine with numerous 3D seat cutting attachments, Quickway valve resurfacer, and the latest advanced computer simulation programs.
The owner/operator worked for General Motors for 29 years as a Senior Engineering Associate, spending the last 17 years at the GM Proving Grounds, working in the Engine Development Group. He has an extensive race background, building motors and race cars over the past 36 years (his own and for customers) and many hours behind the wheel. |
Projects |
They are currently working on an aluminum cylinder head for my 66 coupe, which will be naturally aspirated and raced in Open Comp. Eventually we will upgrade to EFI, and finally it will be supercharge with either a ProCharger, Paxton, or Magnuson blower. Our goal is to produce as much power as possible in each of the three stages, documenting the HP and torque and engine build specifications as we go. As soon as the head is completed and tested on the flow bench, we'll post the results in this section.
We'll also post results from some of the various cylinder heads completed for our customers, as well as pictures of the heads while they are being worked on and when they are completed.
UPDATE: Results posted below. |
The flow numbers below are from a cylinder head that was ported for street/strip usage. With this head, we hope to build a naturally aspirated 250ci that will exceed 320hp. After
it has been dyno'd we will post the results here, as well as in the dyno section.
Ford Small Six - Aluminum Cylinder Head - Flow Ratings
(144/170/200/221/250ci) |
Intake |
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.100 |
.200 |
.300 |
.400 |
.500 |
.600 |
US Log |
45 cfm |
87 cfm |
108 cfm |
119 cfm |
124 cfm |
127 cfm |
OZ 250 |
63 cfm |
101 cfm |
133 cfm |
155 cfm |
156 cfm |
156 cfm |
CI Alum |
52 cfm |
99 cfm |
143 cfm |
180 cfm |
201 cfm |
210 cfm |
Ported CI |
55 cfm |
103 cfm |
159 cfm |
196 cfm |
223 cfm |
231 cfm |
Exhaust |
|
.100 |
.200 |
.300 |
.400 |
.500 |
.600 |
US Log |
36 cfm |
68 cfm |
91 cfm |
98 cfm |
103 cfm |
105 cfm |
OZ 250 |
36 cfm |
68 cfm |
91 cfm |
98 cfm |
103 cfm |
105 cfm |
CI Alum |
40 cfm |
79 cfm |
111 cfm |
144 cfm |
164 cfm |
174 cfm |
Ported CI |
44 cfm |
87 cfm |
122 cfm |
159 cfm |
179 cfm |
184 cfm |
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