.Louthan Competition; Performance Cylinder Heads for domestic and import vehicles... High performance head porting, polishing, rebuilding...

Performance cylinder head rebuilding for import & domestic heads. High performance head porting, polishing, rebuilding

Performance cylinder head rebuilding for import and domestic heads. High performance head porting, polishing, rebuilding

Please see the price schedule below

Domestic / Marine

Whether you're competing at the race track, pulling a heavy load over the mountain, or just lead footin' it around town, reducing the air restriction in the carburetor, heads & manifolds maximizes engine efficiency - raising both horsepower and fuel economy.

We rebuild stock heads with the same care as the high dollar race heads. ALL valve jobs are 3-angle and ALL valve guides are finished with a rigid hone, yet our prices are typically the same if not lower than our competitors. The highest quality doesn't always have to come at the highest price.

Louthan Competition Aluminum Valve Covers

Louthan Competition valve covers are offered only to those who have purchased Louthan Competition cylinder heads.

small block chev
small block chev extra wide
small block chev center bolt
big block chev
big block chev marine
small block ford
small / big block mopar
429, 460 ford

$160.00
$250.00
$190.00
$180.00
$210.00
$160.00
$250.00
$250.00

LABOR PRICE SCHEDULE
(V-6 or V-8)

PORTING OPTIONS

Stock Valve Job	$180
** Competition Valve Job	$200
Replace valve guides (includes parts)	$132
Machine seats for larger valves	$80
Resurface (iron)	$35 ea
Resurface (aluminum)	$40 ea
Volume chamber & mill for specific compression ratio	$150
Surface exhaust manifolds	$30 ea
Port / Port match intake manifold	$125

* Stage III does not include cost of valves

** Competition valve job is any deviation from stock ie: larger springs, longer valves.

Click here for Ford 2.0 and 2.3 Liter heads

Stage I:

$200

Basic flow improvement - short side radius contoured and ports polished. The stage I flow improvement will increase your head's efficiency by approximately 20 cfm @ 28" which calculates to an approximate 40 H.P. gain on a V-8

Stage II:

$400

Basic port job - short side radius contoured and outer ports widened at choke point. The Stage II port job will increase your head's efficiency by approximately 30 cfm @ 28" which calculates to an approximate 60 H.P. gain on a V-8

Stage III:

$800+

Competition port job - full competition port and polish complete with larger valves installed *.The stage III port job will increase your head's efficiency by at least 40 cfm @ 28" which calculates to a gain of at least 80 H.P. on a V-8