DescriptionPrice
74cc Chamber, Ford Exhaust Port - Bare Cylinder Head (pair)BTH-CHFA-CCC$1,599.99Buy Now
74cc Chamber, Chevrolet Exhaust Port - Bare Cylinder Head (pair)BTH-CHCA-CCC$1,749.99Buy Now
80cc Chamber, Ford Exhaust Port - Bare Cylinder Head (pair)BTH-CHFA-CC$1,599.99Buy Now
80cc Chamber, Chevrolet Exhaust Port - Bare Cylinder Head (pair)BTH-CHCA-CC$1,749.99Buy Now
100cc Chamber, Ford Exhaust Port - Bare Cylinder Head (pair)BTH-CHFA-OC$1,599.99Buy Now
100cc Chamber, Chevrolet Exhaust Port - Bare Cylinder Head (pair)BTH-CHCA-OC$1,749.99Buy Now
Blue Thunder Cylinder heads available in various stages of porting for all applications, both high performance, street rod/ weekend warrior, and all out racing.
Head
Stage 1 - consists of a complete, assembled cylinder head cylinder heads. Danin 'Brutal Duty' Stainless Steel Valves are used, with heads diameters of 2.250 (intake) and 1.880 (exhaust) Springs for a Solid Roller camshaft are available as an upgrade. Retainers are Chrome-Moly Steel, seals are Viton.
Stage 2 - Includes Stage 1, with pocket porting, intake port match and cleanup, exhaust is ported throughout the port.
Stage 3 - Includes Stage 1 and 2, plus intake is ported throughout the port, chambers are reshaped and polished.
Part NumberDescriptionPrice
2001-11715Stage 1 - any chamber - Chev Exhaust$2,399.99Buy Now
2001-11716Stage 1 - any chamber - Ford Exhaust$2,249.99Buy Now
2002-11715Stage 2 - any chamber - Chev Exhaust$2,899.99Buy Now
2002-11716Stage 2 - any chamber - Ford Exhaust$2,749.99Buy Now
2003-11715Stage 3 - any chamber - Chev Exhaust$3,199.99Buy Now
2003-11716Stage 3 - any chamber - Ford Exhaust$3,049.99Buy Now

351 Cleveland Ford Cylinder Heads

This head is a canted valve (351C valve angles and location) Yates intake port location head that can use 2.02' to 2.20' intake valves and 1.60' to 1.70' exhaust valves. 5Occ and 70cc combustion chambers are available. Two different exhaust ports are available. The high exhaust port is Yates bolt pattern and height. The low exhaust port has a double Cleveland bolt pattern. The lower bolt pattern is stock Cleveland height with a port that functions as a 'stuffed Cleveland' port, in which the bottom of the port is filled. The second bolt pattern is .750' higher and aligns the floor of the port with floor of the flange. The top of the port can then be cut out to match the flange for increased exhaust flow.
All ports have .400' wall on them. This head has partly machined alcohol down nozzles that can be finished with careful use of a hand held drill.
Manifolds for the head are available from both Ford Motorsport and Edelbrock.

Ford Cylinder Heads For Sale

This head is designed for the 350-426 cu. in. small block market, in serious racing engines. Intake ports with 10 to 15 minutes of work, will flow approx. 350-360 cfm at 28', with a 2.20 valve. (Please note: use a valve over 2.125' only, in a big bore (4.125' - 4.155') application as cylinder wall valve shrouding is a problem). This intake port has already been ported to more than 395 cfm at .800 lift. The Yates height exhaust port will flow approx. 240 cfm at 28' with a 1.70' valve at .800 lift (with approx. 10-15 minutes work per port). This port has already been ported to 285+ cfm with a full porting.
The lower Cleveland export starts at 200 cfm to 220 cfm in the lower position. The higher Cleveland location must be ported and should flow 250 cfm when properly worked.
All B302 - 351C valve train components, including shaft rocker conversions, are compatible with this head, which has generous rocker arm stud pads. Probe Industries Stud Girdles are available from CPR .

AGAIN, THIS HEAD IS FOR 350-425+ CU. IN. RACE APPLICATIONS ONLY!

Do not use in small cubic inch applications on the street!

Part Numbers will be posted as cylinder heads become available.

Part NumberDescriptionPrice
BTH-CHSB-HP5050cc Chamber, Yates Exhaust Port$1,849.99Buy Now
BTH-CHSB-HP7070cc Chamber, Yates Exhaust Port$1,849.99Buy Now
This cylinder flows roughly 320/195 @ .800 lift (out of the box). Max capability (Stage IV, with a 4.125 bore) is roughly 410/295cfm @ .800 lift. (measured @ 28' of water).
Stage 1 - consists of a complete, assembled cylinder head cylinder heads. Danin 'Brutal Duty' Stainless Steel Valves are used, with head diameters of 2.200 (intake) and 1.710 (exhaust) Springs for a Solid Roller camshaft are available as an upgrade. Retainers are Chrome-Moly Steel, seals are Viton.
Stage 2 - Includes Stage 1, with pocket porting, intake port match and cleanup, exhaust is ported throughout the port.
Stage 3 - Includes Stage 1 and 2, plus intake is ported throughout the port, chambers are reshaped and polished.
Part NumberDescriptionPrice
2001-11744Stage 1 - any chamber - any exhaust$2,649.99Buy Now
2002-11744Stage 2 - any chamber - any exhaust$2,899.99Buy Now
2003-11744Stage 3 - any chamber - any exhaust$3,049.99Buy Now